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* Register extra test objectsAndreas Schwab2016-04-131-3/+7
| | | | | This makes sure that the extra test objects are compiled with the correct MODULE_NAME and dependencies are tracked.
* math: don't clobber old libm.so on install [BZ #19822]Dylan Alex Simon2016-03-211-1/+2
| | | | | | | | | | | | When installing glibc (w/mathvec enabled) in-place on a system with a glibc w/out mathvec enabled, the install will clobber the existing libm.so (e.g., /lib64/libm-2.21.so) with a linker script. This is because libm.so is a symlink to libm.so.6 which is a symlink to the final libm-2.21.so file. When the makefile writes the linker script directly to libm.so, it gets clobbered. The simple patch below to math/Makefile fixes this. It is based on the nptl Makefile, which does exactly the same thing in a safer way.
* Omit test-math-isinff when no C++ compiler.Roland McGrath2016-03-041-1/+4
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* Ensure isinff, isinfl, isnanf, and isnanl are defined (Bug 19439)Carlos O'Donell2016-02-141-0/+3
| | | | | | | In ICO C++11 mode ensure that isinff, isinfl, isnanf, and isnanl are defined. These functions were accidentally removed from the header as part of commit d9b965fa56350d6eea9f7f438a0714c7ffbb183f, but being GNU extensions, they should have been left in place.
* [BZ #19451]Paul Pluzhnikov2016-01-181-2/+2
| | | | | * math/Makefile (libm-vec-tests): Move libraries after wrappers.o to fix "make check" link failure on Ubuntu.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
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* Fix nan functions handling of payload strings (bug 16961, bug 16962).Joseph Myers2015-12-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nan, nanf and nanl functions handle payload strings by doing e.g.: if (tagp[0] != '\0') { char buf[6 + strlen (tagp)]; sprintf (buf, "NAN(%s)", tagp); return strtod (buf, NULL); } This is an unbounded stack allocation based on the length of the argument. Furthermore, if the argument starts with an n-char-sequence followed by ')', that n-char-sequence is wrongly treated as significant for determining the payload of the resulting NaN, when ISO C says the call should be equivalent to strtod ("NAN", NULL), without being affected by that initial n-char-sequence. This patch fixes both those problems by using the __strtod_nan etc. functions recently factored out of strtod etc. for that purpose, with those functions being exported from libc at version GLIBC_PRIVATE. Tested for x86_64, x86, mips64 and powerpc. [BZ #16961] [BZ #16962] * math/s_nan.c (__nan): Use __strtod_nan instead of constructing a string on the stack for strtod. * math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing a string on the stack for strtof. * math/s_nanl.c (__nanl): Use __strtold_nan instead of constructing a string on the stack for strtold. * stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and __strtold_nan to GLIBC_PRIVATE. * math/test-nan-overflow.c: New file. * math/test-nan-payload.c: Likewise. * math/Makefile (tests): Add test-nan-overflow and test-nan-payload.
* Corrected path to installed libmvec_nonshared.aAndrew Senkevich2015-12-031-1/+1
| | | | | * math/Makefile ($(inst_libdir)/libm.so): Corrected path to libmvec_nonshared.a
* Better workaround for aliases of *_finite symbols in vector math library.Andrew Senkevich2015-11-271-1/+1
| | | | | | | | | | | | | Old workaround based on assembly aliases can lead to link fail (bug 19058). This patch makes workaround in another way to avoid it. [BZ #19058] * math/Makefile ($(inst_libdir)/libm.so): Added libmvec_nonshared.a to AS_NEEDED. * sysdeps/x86/fpu/bits/math-vector.h: Removed code with old workaround. * sysdeps/x86_64/fpu/Makefile (libmvec-support, libmvec-static-only-routines): Added new file. * sysdeps/x86_64/fpu/svml_finite_alias.S: New file.
* Fix lgamma setting signgam for ISO C (bug 15421).Joseph Myers2015-11-201-3/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lgamma (and likewise lgammaf, lgammal) function wrongly sets the signgam variable even when building for strict ISO C conformance (-std=c99 / -std=c11), although the user may define such a variable and it's only in the implementation namespace for POSIX with XSI extensions enabled. Following discussions starting at <https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and <https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems that the safest approach for fixing this particular issue is for signgam to become a weak alias for a newly exported symbol __signgam, with the library functions only setting __signgam, at which point static linker magic will preserve the alias for newly linked binaries that refer to the library's signgam rather than defining their own, while breaking the alias for programs that define their own signgam, with new symbol versions for lgamma functions and with compat symbols for existing binaries that set both signgam and __signgam. This patch implements that approach for the fix. signgam is made into a weak alias. The four symbols __signgam, lgamma, lgammaf, lgammal get new symbol versions at version GLIBC_2.23, with the existing versions of lgamma, lgammaf and lgammal becoming compat symbols. When the compat versions are built, gamma, gammaf and gammal are aliases for the compat versions (i.e. always set signgam); this is OK as they are not ISO C functions, and avoids adding new symbol versions for them unnecessarily. When the compat versions are not built (i.e. for static linking and for future glibc ports), gamma, gammaf and gammal are aliases for the new versions that set __signgam. The ldbl-opt versions are updated accordingly. The lgamma wrappers are adjusted so that the same source files, included from different files with different definitions of USE_AS_COMPAT, can build either the new versions or the compat versions. Similar changes are made to the ia64 versions (untested). Tests are added that the lgamma functions do not interfere with a user variable called signgam for ISO C, with various choices for the size of that variable, whether it is initialized, and for static and dynamic linking. The conformtest whitelist entry is removed as well. Tested for x86_64, x86, mips64 and powerpc, including looking at objdump --dynamic-syms output to make sure the expected sets of symbols were aliases. Also spot-tested that a binary built with old glibc works properly (i.e. gets signgam set) when run with new glibc. [BZ #15421] * sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam, initialize with 0 and define as weak alias of __signgam. * include/math.h [!_ISOMAC] (__signgam): Declare. * math/Makefile (libm-calls): Add w_lgamma_compat. (tests): Add test-signgam-uchar, test-signgam-uchar-init, test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and test-signgam-ullong-init. (tests-static): Add test-signgam-uchar-static, test-signgam-uchar-init-static, test-signgam-uint-static, test-signgam-uint-init-static, test-signgam-ullong-static and test-signgam-ullong-init-static. (CFLAGS-test-signgam-uchar.c): New variable. (CFLAGS-test-signgam-uchar-init.c): Likewise. (CFLAGS-test-signgam-uchar-static.c): Likewise. (CFLAGS-test-signgam-uchar-init-static.c): Likewise. (CFLAGS-test-signgam-uint.c): Likewise. (CFLAGS-test-signgam-uint-init.c): Likewise. (CFLAGS-test-signgam-uint-static.c): Likewise. (CFLAGS-test-signgam-uint-init-static.c): Likewise. (CFLAGS-test-signgam-ullong.c): Likewise. (CFLAGS-test-signgam-ullong-init.c): Likewise. (CFLAGS-test-signgam-ullong-static.c): Likewise. (CFLAGS-test-signgam-ullong-init-static.c): Likewise. * math/Versions (libm): Add GLIBC_2.23. * math/lgamma-compat.h: New file. * math/test-signgam-main.c: Likewise. * math/test-signgam-uchar-init-static.c: Likewise. * math/test-signgam-uchar-init.c: Likewise. * math/test-signgam-uchar-static.c: Likewise. * math/test-signgam-uchar.c: Likewise. * math/test-signgam-uint-init-static.c: Likewise. * math/test-signgam-uint-init.c: Likewise. * math/test-signgam-uint-static.c: Likewise. * math/test-signgam-uint.c: Likewise. * math/test-signgam-ullong-init-static.c: Likewise. * math/test-signgam-ullong-init.c: Likewise. * math/test-signgam-ullong-static.c: Likewise. * math/test-signgam-ullong.c: Likewise. * math/w_lgamma.c: Rename to w_lgamma_main.c and replace by wrapper of w_lgamma_main.c. * math/w_lgamma_compat.c: New file. * math/w_lgamma_compatf.c: Likewise. * math/w_lgamma_compatl.c: Likewise. * math/w_lgamma_main.c: New file. Based on w_lgamma.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgamma): Change to LGFUNC (__lgamma). Use CALL_LGAMMA. * math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by wrapper of w_lgammaf_main.c. * math/w_lgammaf_main.c: New file. Based on w_lgammaf.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammaf): Change to LGFUNC (__lgammaf). Use CALL_LGAMMA. * math/w_lgammal.c: Rename to w_lgammal_main.c and replace by wrapper of w_lgammal_main.c. * math/w_lgammal_main.c: New file. Based on w_lgammal.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammal): Change to LGFUNC (__lgammal). Use CALL_LGAMMA. * sysdeps/ia64/fpu/lgamma-compat.h: New file. * sysdeps/ia64/fpu/w_lgamma.c: Move to .... * sysdeps/ia64/fpu/w_lgamma_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgamma): Change to LGFUNC (lgamma). Use CALL_LGAMMA. (__ieee754_gamma): Define as alias. * sysdeps/ia64/fpu/w_lgammaf.c: Move to .... * sysdeps/ia64/fpu/w_lgammaf_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammaf): Change to LGFUNC (lgammaf). Use CALL_LGAMMA. (__ieee754_gammaf): Define as alias. * sysdeps/ia64/fpu/w_lgammal.c: Move to .... * sysdeps/ia64/fpu/w_lgammal_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammal): Change to LGFUNC (lgammal). Use CALL_LGAMMA. (__ieee754_gammal): Define as alias. * sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here. Include <math/w_lgamma_compat.c>. [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat): Define as alias of __lgamma_compat and use in defining lgammal. * sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here. Include <math/lgamma-compat.h> and <math/w_lgamma_compatl.c>. (USE_AS_COMPAT): New macro. (LGAMMA_OLD_VER): Undefine and redefine. (lgammal): Do not define here. (gammal): Only define here if [GAMMA_ALIAS]. * conform/linknamespace.pl (@whitelist): Remove signgam. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Fix powerpc nearbyint wrongly clearing "inexact" and leaving traps disabled ↵Joseph Myers2015-11-111-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (bug 19228). Similar to bug 15491 recently fixed for x86_64 / x86, the powerpc (both powerpc32 and powerpc64) hard-float implementations of nearbyintf and nearbyint wrongly clear an "inexact" exception that was raised before the function was called; this shows up as failure of the test math/test-nearbyint-except added when that bug was fixed. They also wrongly leave traps on "inexact" disabled if they were enabled before the function was called. This patch fixes the bugs similar to how the x86 bug was fixed: saving and restoring the whole floating-point state, both to restore the original "inexact" flag state and to restore the original state of whether traps on "inexact" were enabled. Because there's a convenient point in the powerpc implementations to save state after any sNaN arguments will have raised "invalid" but before "inexact" traps need to be disabled, no special handling for "invalid" is needed as in the x86 version. Tested for powerpc64 and powerpc32, where it fixes the math/test-nearbyint-except failure as well as fixing the new test math/test-nearbyint-except-2 added by this patch. Also tested for x86_64 and x86 that the new test passes. If powerpc experts see a more efficient way of doing this (e.g. instruction positioning that's better for pipelines on typical processors) then of course followups optimizing the fix are welcome. [BZ #19228] * sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S (__nearbyint): Save and restore full floating-point state. * sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S (__nearbyint): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * math/test-nearbyint-except-2.c: New file. * math/Makefile (tests): Add test-nearbyint-except-2.
* Run libm-test tests for finite-math-only functions.Joseph Myers2015-11-051-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch arranges for the libm-test tests to be run for the finite-math-only function variants, in addition to the existing runs for out-of-line and bits/mathinline.h inline variants. gen-libm-test.pl is made to add a flag to all tests with non-finite inputs or outputs so that they can be skipped at runtime when the finite-math-only variants are being tested (skipping is for all rounding modes; that is, -ffinite-math-only is being treated as excluding overflow cases even when the rounding mode is such that the overflowed result is finite). errno setting is not tested for these variants (in general they don't set it, and it's implementation-defined in ISO C whether it's set on underflow, with the glibc definition being that it may not be for -ffinite-math-only; other cases where errno would normally be expected to be set are mostly excluded as having non-finite or overflowing arguments or results). As with the inline function tests, these ones are built with -D__FINITE_MATH_ONLY=1 to select the function variants, rather than -ffinite-math-only. Use of -ffinite-math-only would not be suitable for these tests because it would also affect libm-test.inc code that e.g. tests whether results are infinities or NaNs - if these function variants have bugs that incorrectly produce such results, we want them to show up in the tests, which means the compiler should not be optimizing the tests on the basis of results being finite. The finite-math-only functions share the same ulps settings as the main out-of-line functions. These interfaces were one significant group of untested ABIs listed at <https://sourceware.org/ml/libc-alpha/2013-07/msg00386.html>. I haven't rerun the script to list untested interfaces, but I expect that the vast bulk of interfaces there are still untested and could do with testcases being added (or, if applicable, being made compat symbols; in general, most symbols not starting '_' are safe bets to add tests for, while _* need more investigation of what the actual public API is, if any). I'd like to encourage people to help reduce the accumulation of untested interfaces by adding more tests. Tested for x86_64 and x86. Given my recent lgamma/gamma and log* fixes, the new tests pass (before those fixes, the new tests showed up those bugs, so illustrating the practical utility of having tests for these function variants). * math/libm-test.inc (NON_FINITE): New macro. (enable_test): Do not run tests flagged NON_FINITE if TEST_FINITE. * math/gen-libm-test.pl (show_exceptions): Add argument $non_finite. (parse_args): Update call to show_exceptions. * math/test-math-finite.h: New file. * math/test-math-no-finite.h: Likewise. * math/test-double-finite.c: Likewise. * math/test-float-finite.c: Likewise. * math/test-ldouble-finite.c: Likewise. * math/test-double.c: Include "test-math-no-finite.h". * math/test-float.c: Include "test-math-no-finite.h". * math/test-ldouble.c: Include "test-math-no-finite.h". * math/test-math-inline.h (TEST_FINITE): New macro. * math/test-math-vector.h (TEST_FINITE): Likewise. * math/Makefile (test-longdouble-yes): Add test-ldouble-finite. (libm-tests): Add test-float-finite and test-double-finite. ($(objpfx)test-float-finite.o): New dependency on $(objpfx)libm-test.stmp. ($(objpfx)test-double-finite.o): Likewise. ($(objpfx)test-ldouble-finite.o): Likewise. (libm-test-no-inline-cflags): New variable. (libm-test-finite-cflags): Likewise. (CFLAGS-test-float-finite.c): Likewise. (CFLAGS-test-double-finite.c): Likewise. (CFLAGS-test-ldouble-finite.c): Likewise. (CFLAGS-test-float.c): Use $(libm-test-no-inline-cflags). (CFLAGS-test-double.c): Likewise. (CFLAGS-test-ldouble.c): Likewise.
* Fix finite-math-only lgamma functions signgam setting (bug 19211).Joseph Myers2015-11-051-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lgamma inline functions in bits/math-finite.h do not set signgam if __USE_ISOC99, even when other feature test macros mean a standard such as XSI POSIX is selected for which it should be set. (This is essentially the opposite issue to bug 15421, the out-of-line versions setting signgam even when they shouldn't.) This patch fixes those functions to use __USE_MISC || __USE_XOPEN as the condition for when to set signgam, since it's the condition for when math.h declares signgam. The legacy gamma* names are only declared at all if __USE_MISC || __USE_XOPEN, so they just set signgam unconditionally. Tests for certain standards or not using _GNU_SOURCE cannot use test-skeleton.c (this is a known issue noted on the wiki todo list). Thus, the new tests that signgam remains not set in ISO C modes do not use test-skeleton.c. They also define _ISOMAC to avoid running into declarations in the internal include/ headers that only work in _GNU_SOURCE mode. Tested for x86_64 and x86. [BZ #19211] * math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC || __USE_XOPEN], not if [!__USE_ISOC99]. (lgammaf): Likewise. (lgammal): Likewise. (gamma): Set signgam unconditionally, not if [!__USE_ISOC99]. (gammaf): Likewise. (gammal): Likewise. * math/test-signgam-finite-c11.c: New file. * math/test-signgam-finite-c99.c: Likewise. * math/test-signgam-finite.c: Likewise. * math/Makefile (tests): Add test-signgam-finite, test-signgam-finite-c99 and test-signgam-finite-c11. (CFLAGS-test-signgam-finite.c): New variable. (CFLAGS-test-signgam-finite-c99.c): Likewise. (CFLAGS-test-signgam-finite-c11.c): Likewise.
* Make drem an alias of remainder (bug 16171).Joseph Myers2015-10-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The libm drem functions just call the corresponding __remainder functions. This patch removes the unnecessary wrappers by making them into weak aliases at the ELF level. Tested for x86_64, x86, mips64 and powerpc. [BZ #16171] * math/w_remainder.c (drem): Define as weak alias of __remainder. [NO_LONG_DOUBLE] (dreml): Define as weak alias of __remainder. * math/w_remainderf.c (dremf): Define as weak alias of __remainderf. * math/w_remainderl.c (dreml): Define as weak alias of __remainderl. * sysdeps/ia64/fpu/e_remainder.S (drem): Define as weak alias of __remainder. * sysdeps/ia64/fpu/e_remainderf.S (dremf): Define as weak alias of __remainderf. * sysdeps/ia64/fpu/e_remainderl.S (dreml): Define as weak alias of __remainderl. * sysdeps/ieee754/ldbl-opt/nldbl-remainder.c (dreml): Define as weak alias of remainderl. * sysdeps/ieee754/ldbl-opt/w_remainder.c [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__drem): Define as strong alias of __remainder. [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (dreml): Use compat_symbol. * sysdeps/ieee754/ldbl-opt/w_remainderl.c (__dreml): Define as strong alias of __remainderl. (dreml): Use long_double_symbol. * math/Makefile (libm-calls): Remove w_drem. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Remove drem. (CFLAGS-nldbl-drem.c): Remove variable. (CFLAGS-nldbl-remainder.c): Add -fno-builtin-dreml. * math/w_drem.c: Remove file. * math/w_dremf.c: Likewise. * math/w_dreml.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-drem.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_drem.c: Likewise. * sysdeps/ieee754/ldbl-opt/w_dreml.c: Likewise.
* Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181).Joseph Myers2015-10-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | The i386 and x86_64 versions of fesetenv, when called with FE_DFL_ENV or FE_NOMASK_ENV as argument, do not clear SSE exceptions raised in MXCSR. These arguments should, like other fenv_t values, represent the whole of the floating-point state, so such exceptions should be cleared; this patch adds the required clearing. (Discovered while working on bug 16068.) Tested for x86_64 and x86. [BZ #19181] * sysdeps/i386/fpu/fesetenv.c (__fesetenv): Clear already-raised SSE exceptions when argument is FE_DFL_ENV or FE_NOMASK_ENV. * sysdeps/x86_64/fpu/fesetenv.c (__fesetenv): Likewise. * math/test-fenv-clear-main.c: New file. * math/test-fenv-clear.c: Likewise. * math/Makefile (tests): Add test-fenv-clear. * sysdeps/x86/fpu/test-fenv-clear-sse.c: New file. * sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add test-fenv-clear-sse. [$(subdir) = math] (CFLAGS-test-fenv-clear-sse.c): New variable.
* Fix i386 / x86_64 nearbyint exception clearing (bug 15491).Joseph Myers2015-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implementations of nearbyint functions using x87 floating point (i386 all versions, x86_64 long double only) use the fclex instruction, which clears any exceptions that were raised before the function was called. These functions must not clear exceptions that were raised before they were called. This patch fixes these functions to save and restore the whole floating-point environment (fnstenv / fldenv) as the way of avoiding raising "inexact" (recall that there isn't an x87 instruction for loading just the status word, so the whole environment has to be saved and loaded instead - the code already saved and loaded the control word, which is now obtained from the saved environment after this patch, to disable traps on "inexact"). In the case of the long double functions, any "invalid" exception from frndint (applied to a signaling NaN) needs merging into the saved state; this issue doesn't apply to the float and double functions because that exception would have been raised when the argument is loaded, before the environment is saved. [BZ #15491] * sysdeps/i386/fpu/s_nearbyint.S (__nearbyint): Save and restore floating-point environment instead of clearing all exceptions. * sysdeps/i386/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sysdeps/i386/fpu/s_nearbyintl.S (__nearbyintl): Likewise, merging in "invalid" exceptions from frndint. * sysdeps/x86_64/fpu/s_nearbyintl.S (__nearbyintl): Likewise. * math/test-nearbyint-except.c: New file. * math/Makefile (tests): Add test-nearbyint-except.
* Since we now inline isinf, isnan and isfinite in math.h, replace uses of ↵Wilco Dijkstra2015-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __isinf_ns(l/f) with isinf, and remove the unused inlines __isinf_ns(l/f), __isnan(f) and __finite(f). 2015-09-18 Wilco Dijkstra <wdijkstr@arm.com> * include/math.h: Remove __isinf_ns, __isinf_nsf, __isinf_nsl. * math/Makefile: Remove isinf_ns.c. * math/divtc3.c (__divtc3): Replace __isinf_nsl with isinf. * math/multc3.c (__multc3): Likewise. * math/s_casin.c (__casin): Likewise. * math/s_casinf.c (__casinf): Likewise. * math/s_casinl.c (__casinl): Likewise. * math/s_cproj.c (__cproj): Likewise. * math/s_cprojf.c (__cprojf): Likewise. * math/s_cprojl.c (__cprofl): Likewise. * math/s_ctan.c (__ctan): Likewise. * math/s_ctanf.c (__ctanf): Likewise. * math/s_ctanh.c (__ctanh): Likewise. * math/s_ctanhf.c (__ctanhf): Likewise. * math/s_ctanhl.c (__ctanhl): Likewise. * math/s_ctanl.c (__ctanl): Likewise. * math/w_fmod.c (__fmod): Likewise. * math/w_fmodf.c (__fmodf): Likewise. * math/w_fmodl.c (_fmodl): Likewise. * math/w_remainder.c (__remainder): Likewise. * math/w_remainderf.c (__remainderf): Likewise. * math/w_remainderl.c (__remainderl): Likewise. * math/w_scalb.c (__scalb): Likewise. * math/w_scalbf.c (__scalbf): Likewise. * math/w_scalbl.c (__scalbl): Likewise. * sysdeps/ieee754/dbl-64/s_isinf_ns.c: Deleted file. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Replace __isinf_ns with isinf. * sysdeps/ieee754/dbl-64/wordsize-64/math_private.h: Deleted file. * sysdeps/ieee754/dbl-64/wordsize-64/s_isinf_ns.c: Deleted file. * sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Replace __isinf_nsf with isinf. * sysdeps/ieee754/flt-32/math_private.h: Deleted file. * sysdeps/ieee754/flt-32/s_isinf_nsf.c: Deleted file. * sysdeps/ieee754/ldbl-128/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-128/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_cprojl.c(__cprojll): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_ctanl.c(__ctanl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-128ibm/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf. * sysdeps/ieee754/ldbl-96/s_isinf_nsl.c: Deleted file. * sysdeps/ieee754/ldbl-96/s_sincosl.c (__sincosl): Replace __isinf_nsl with isinf.
* Add inlining of the C99 math functions ↵Wilco Dijkstra2015-09-181-1/+2
| | | | | | | | | | | | | | | | | | | | | isinf/isnan/signbit/isfinite/isnormal/fpclassify using GCC built-ins when available. Since going through the PLT is expensive for these small functions, inlining results in major speedups (about 7x on Cortex-A57 for isinf). The GCC built-ins are not correct if signalling NaN support is required, and thus are turned off in that case (see GCC bug 66462). The test-snan.c tests sNaNs and so must be explicitly built with -fsignaling-nans. 2015-09-18 Wilco Dijkstra <wdijkstr@arm.com> [BZ #15367] [BZ #17441] * math/Makefile: Build test-snan.c with -fsignaling-nans. * math/math.h (fpclassify): Use __builtin_fpclassify when available. (signbit): Use __builtin_signbit(f/l). (isfinite): Use__builtin_isfinite. (isnormal): Use __builtin_isnormal. (isnan): Use __builtin_isnan. (isinf): Use __builtin_isinf_sign.
* Fix lgamma (negative) inaccuracy (bug 2542, bug 2543, bug 2558).Joseph Myers2015-09-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing implementations of lgamma functions (except for the ia64 versions) use the reflection formula for negative arguments. This suffers large inaccuracy from cancellation near zeros of lgamma (near where the gamma function is +/- 1). This patch fixes this inaccuracy. For arguments above -2, there are no zeros and no large cancellation, while for sufficiently large negative arguments the zeros are so close to integers that even for integers +/- 1ulp the log(gamma(1-x)) term dominates and cancellation is not significant. Thus, it is only necessary to take special care about cancellation for arguments around a limited number of zeros. Accordingly, this patch uses precomputed tables of relevant zeros, expressed as the sum of two floating-point values. The log of the ratio of two sines can be computed accurately using log1p in cases where log would lose accuracy. The log of the ratio of two gamma(1-x) values can be computed using Stirling's approximation (the difference between two values of that approximation to lgamma being computable without computing the two values and then subtracting), with appropriate adjustments (which don't reduce accuracy too much) in cases where 1-x is too small to use Stirling's approximation directly. In the interval from -3 to -2, using the ratios of sines and of gamma(1-x) can still produce too much cancellation between those two parts of the computation (and that interval is also the worst interval for computing the ratio between gamma(1-x) values, which computation becomes more accurate, while being less critical for the final result, for larger 1-x). Because this can result in errors slightly above those accepted in glibc, this interval is instead dealt with by polynomial approximations. Separate polynomial approximations to (|gamma(x)|-1)(x-n)/(x-x0) are used for each interval of length 1/8 from -3 to -2, where n (-3 or -2) is the nearest integer to the 1/8-interval and x0 is the zero of lgamma in the relevant half-integer interval (-3 to -2.5 or -2.5 to -2). Together, the two approaches are intended to give sufficient accuracy for all negative arguments in the problem range. Outside that range, the previous implementation continues to be used. Tested for x86_64, x86, mips64 and powerpc. The mips64 and powerpc testing shows up pre-existing problems for ldbl-128 and ldbl-128ibm with large negative arguments giving spurious "invalid" exceptions (exposed by newly added tests for cases this patch doesn't affect the logic for); I'll address those problems separately. [BZ #2542] [BZ #2543] [BZ #2558] * sysdeps/ieee754/dbl-64/e_lgamma_r.c (__ieee754_lgamma_r): Call __lgamma_neg for arguments from -28.0 to -2.0. * sysdeps/ieee754/flt-32/e_lgammaf_r.c (__ieee754_lgammaf_r): Call __lgamma_negf for arguments from -15.0 to -2.0. * sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r): Call __lgamma_negl for arguments from -48.0 or -50.0 to -2.0. * sysdeps/ieee754/ldbl-96/e_lgammal_r.c (__ieee754_lgammal_r): Call __lgamma_negl for arguments from -33.0 to -2.0. * sysdeps/ieee754/dbl-64/lgamma_neg.c: New file. * sysdeps/ieee754/dbl-64/lgamma_product.c: Likewise. * sysdeps/ieee754/flt-32/lgamma_negf.c: Likewise. * sysdeps/ieee754/flt-32/lgamma_productf.c: Likewise. * sysdeps/ieee754/ldbl-128/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-128/lgamma_productl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/lgamma_productl.c: Likewise. * sysdeps/ieee754/ldbl-96/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-96/lgamma_product.c: Likewise. * sysdeps/ieee754/ldbl-96/lgamma_productl.c: Likewise. * sysdeps/generic/math_private.h (__lgamma_negf): New prototype. (__lgamma_neg): Likewise. (__lgamma_negl): Likewise. (__lgamma_product): Likewise. (__lgamma_productl): Likewise. * math/Makefile (libm-calls): Add lgamma_neg and lgamma_product. * math/auto-libm-test-in: Add more tests of lgamma. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Don't use -Wno-uninitialized in math/.Joseph Myers2015-08-201-3/+0
| | | | | | | | | | | | The uninitialized variable warnings in math/ having been fixed for all the supported floating-point formats, this patch removes the use of -Wno-uninitialized there, continuing with the goal of avoiding -Wno- options in makefiles as far as possible.. Tested for x86_64 and x86 (full build and testsuite runs), and for powerpc and mips64 (verified that glibc builds without errors). * math/Makefile (CFLAGS): Don't add -Wno-uninitialized.
* Update libmvec multiarch functions for <cpu-features.h>H.J. Lu2015-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates libmvec multiarch functions to use the newly defined HAS_CPU_FEATURE, HAS_ARCH_FEATURE and LOAD_RTLD_GLOBAL_RO_RDX from <cpu-features.h>. * math/Makefile ($(addprefix $(objpfx), $(libm-vec-tests))): Remove $(objpfx)init-arch.o. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Remove init-arch. * sysdeps/x86_64/fpu/math-tests-arch.h (avx_usable): Removed. (INIT_ARCH_EXT): Defined as empty. (CHECK_ARCH_EXT): Replace HAS_XXX with HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core.S: Remove __init_cpu_features call. Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf8_core.S: Likewise.
* Prevent runtime fail of SSE vector math tests on non SSE4.1 machine.Andrew Senkevich2015-07-301-2/+0
| | | | | | | | [BZ #18740] * sysdeps/x86_64/fpu/Makefile (double-vlen2-arch-ext-cflags, float-vlen4-arch-ext-cflags): Removed. * math/Makefile (CFLAGS-test-double-vlen2-wrappers.c, CFLAGS-test-float-vlen4-wrappers.c): Likewise.
* Fix math/Makefile dependency on libm-test.stmp for libmvec tests.Joseph Myers2015-06-231-1/+3
| | | | | | | | | | | | | | | | | | | | | | | Since the libmvec tests went in I've noticed build failures from parallel testing in math/, when those tests start building before libm-test.c has been fully generated. (This only applies if libm test sources have been modified after the original glibc build, because otherwise libm-test.stmp was generated during the original build and doesn't get regenerated during testing.) Those tests depend on libm-test.stmp, but the dependency uses $(libmvec-tests), which is set in the sysdeps Makefile fragments, and appears before the inclusion of ../Rules, which is what includes those fragments; thus, the dependency does not work and parallel make can start building the vector tests too soon. This patch moves the dependency further down so that the required variable is defined when the dependency is. Tested for x86_64. * math/Makefile [$(PERL) != no] ($(addprefix $(objpfx), $(addsuffix .o, $(libm-vec-tests)))): Move dependency on libm-test.stmp below the inclusion of Rules.
* This patch adds vector cosf tests.Andrew Senkevich2015-06-091-0/+9
| | | | | | | | | | | | | | | | | | * math/Makefile: Added CFLAGS for new tests. * math/test-float-vlen16.h: New file. * math/test-float-vlen4.h: New file. * math/test-float-vlen8.h: New file. * math/test-double-vlen2.h: Fixed 2 argument macro and comment. * sysdeps/x86_64/fpu/Makefile: Added new tests and variables. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated. * sysdeps/x86_64/fpu/test-float-vlen16-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen16.c: New file. * sysdeps/x86_64/fpu/test-float-vlen4-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen4.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-avx2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-avx2.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8.c: New file.
* Addition of testing infrastructure for vector math functions.Andrew Senkevich2015-06-091-8/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We test vector math functions using scalar tests infrastructure with help of special wrappers from scalar versions to vector ones. Wrapper implemented using platform specific vector types and placed in separate file for compilation with architecture specific options, main part of test has no such options. With help of system of definitions unfolding of which is drived from test code we have wrapper called in individual testing function instead of scalar function. Also system of definitions includes generated during make check header math/libm-have-vector-test.h with series of conditional definitions which help to avoid build fails for functions having no vector versions; runtime architecture check to prevent runtime fails of test run on inappropriate hardware. * math/Makefile: Added rules for vector tests. * math/gen-libm-have-vector-test.sh: Added generation of wrapper declaration under condition. * math/test-double-vlen2.h: New file. * math/test-double-vlen4.h: New file. * math/test-double-vlen8.h: New file. * math/test-vec-loop.h: Added initialization macro. * sysdeps/x86_64/fpu/Makefile: Added variables for vector tests. * sysdeps/x86_64/fpu/libm-test-ulps: Regenarated. * sysdeps/x86_64/fpu/math-tests-arch.h: New file. * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen2.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4.c: New file. * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen8.c: New file.
* This is update for configure, build and install of vector math library.Andrew Senkevich2015-05-141-0/+16
| | | | | | | | | | | | | | | Installation of libm.so as linker script only in case of libmvec.so build. 2015-05-14 Andrew Senkevich <andrew.n.senkevich@gmail.com> * Makeconfig (rpath-dirs, all-subdirs): Added mathvec folder. (libmvec): New variable. * configure.ac: Added option for mathvec build. * configure: Regenerated. * mathvec/Depend: New file. * mathvec/Makefile: New file. * shlib-versions: Added libmvec. * math/Makefile: Added rule for libm.so installation.
* This patch adds infrastructure for addition of SIMDAndrew Senkevich2015-05-141-1/+2
| | | | | | | | | | | | | | declarations for math functions in math.h. Added new headers math-vector.h (only generic version for now) and libm-simd-decl-stubs.h with empty definitions required for proper unfolding of new macros __MATHCALL_VEC which will be used for declaration of vector math functions. 2015-05-14 Andrew Senkevich <andrew.senkevich@intel.com> * bits/math-vector.h: New file. * bits/libm-simd-decl-stubs.h: New header. * math/Makefile (headers): Added new header libm-simd-decl-stubs.h. * math/math.h (__MATHCALL_VEC): New macro.
* Last part of changes regarding to libm-test.inc: additionAndrew Senkevich2015-05-141-2/+3
| | | | | | | | | | | | | of method for separation which exactly testing function needed to run with help of generated during make check header with series of conditional definitions. 2015-05-14 Andrew Senkevich <andrew.senkevich@intel.com> * math/gen-libm-have-vector-test.sh: Script generates series of macros for conditions in testing functions. * math/Makefile: Added call of libm-have-vector-test.sh. * math/libm-test.inc (HAVE_VECTOR): New macros.
* Set errno for log1p on pole/domain error.Stefan Liebler2015-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to bug 6792, errno is not set to ERANGE/EDOM by calling log1p/log1pf/log1pl with x = -1 or x < -1. This patch adds a wrapper which sets errno in those cases and returns the value of the existing __log1p function. The log1p is now an alias to the wrapper function instead of __log1p. The files in sysdeps are reflecting these changes. The ia64 implementation sets errno by itself, thus the wrapper-file is empty. The libm-test is adjusted for log1p-tests to check errno. [BZ #6792] * math/w_log1p.c: New file. * math/w_log1pf.c: Likewise. * math/w_log1pl.c: Likewise. * math/Makefile (libm-calls): Add w_log1p. * math/s_log1pl.c (log1pl): Remove weak_alias. * sysdeps/i386/fpu/s_log1p.S (log1p): Likewise. * sysdeps/i386/fpu/s_log1pf.S (log1pf): Likewise. * sysdeps/i386/fpu/s_log1pl.S (log1pl): Likewise. * sysdeps/x86_64/fpu/s_log1pl.S (log1pl): Likewise. * sysdeps/ieee754/dbl-64/s_log1p.c (log1p): Likewise. [NO_LONG_DOUBLE] (log1pl): Likewise. * sysdeps/ieee754/flt-32/s_log1pf.c (log1pf): Likewise. * sysdeps/ieee754/ldbl-128/s_log1pl.c (log1pl): Likewise. * sysdeps/ieee754/ldbl-64-128/s_log1pl.c (log1p): Remove long_double_symbol. * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (log1pl): Likewise. * sysdeps/ieee754/ldbl-64-128/w_log1pl.c: New file. * sysdeps/ieee754/ldbl-128ibm/w_log1pl.c: Likewise. * sysdeps/m68k/m680x0/fpu/s_log1p.c: Define empty weak_alias to remove weak_alias for corresponding log1p function. * sysdeps/m68k/m680x0/fpu/s_log1pf.c: Likewise. * sysdeps/m68k/m680x0/fpu/s_log1pl.c: Likewise. * sysdeps/ia64/fpu/w_log1p.c: New file. * sysdeps/ia64/fpu/w_log1pf.c: Likewise. * sysdeps/ia64/fpu/w_log1pl.c: Likewise. * math/libm-test.inc (log1p_test_data): Add errno expectations.
* powerpc: Fix inline feraiseexcept, feclearexcept macrosAdhemerval Zanella2015-03-031-1/+2
| | | | | | | This patch fixes the inline feraiseexcept and feclearexcept macros for powerpc by casting the input argument to integer before operation on it. It fixes BZ#17776.
* Remove duplicated -frounding-mathAndrew Senkevich2015-01-061-8/+6
| | | | | | | | | | | | | | No need to add -frounding-math. math-flags in Makeconfig includes -frounding-math. * math/Makefile (CFLAGS-test-float.c): Remove -frounding-math. (CFLAGS-test-double.c): Likewise. (CFLAGS-test-ldouble.c): Likewise. (CPPFLAGS-test-ifloat.c): Likewise. (CPPFLAGS-test-idouble.c): Likewise. (CPPFLAGS-test-ildoubl.c): Likewise. (CFLAGS-test-test-fenv.c): Remove variable. (CFLAGS-test-misc.c): Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
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* Split __kernel_standard* functions (fixes bug 17724).Joseph Myers2014-12-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug 17724 reports references to fesetround being brought in by ldbl-128ibm rintl via references to __rintl from __kernel_standard_l. Because all three __kernel_standard* functions are in the same file, this gets brought in even though only the long double version __kernel_standard_l needs __rintl, and the C90 functions use only __kernel_standard. This patch fixes this by splitting the three versions into separate files; it's fine for long double functions to refer to fe* functions directly, unless they get called by C90 double functions. Tested for x86_64 (testsuite; the reordering of code means disassembly of shared libraries can't usefully be compared). Tested for powerpc that the relevant issue disappears from the linknamespace test output. [BZ #17724] * sysdeps/ieee754/k_standard.c: Don't include <float.h>. (__kernel_standard_f): Remove. Moved to k_standardf.c. (__kernel_standard_l): Remove. Moved to k_standardl.c with (char *) casts added. * sysdeps/ieee754/k_standardf.c: New file. * sysdeps/ieee754/k_standardl.c: Likewise. * math/Makefile (libm-support): Remove k_standard. (libm-calls): Add k_standard.
* [BZ #6803] Set errno for scalbln, scalbnStefan Liebler2014-06-201-1/+1
| | | | | | | | | | | Errno is not set and the testcases will fail. Now the scalbln-aliases are removed in i386/m68 and the wrappers are used when calling the scalbln-functions. On ia64 only scalblnf has its own implementation. For scalbln and scalblnl the ieee754/dbl-64 and ieee754/ldbl-96 are used, thus the wrappers are needed, too.
* Add FE_NOMASK_ENV return value test.Wilco2014-06-101-1/+1
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* Don't require test wrappers to preserve environment variables, use more ↵Joseph Myers2014-06-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | consistent environment. One wart in the original support for test wrappers for cross testing, as noted in <https://sourceware.org/ml/libc-alpha/2012-10/msg00722.html>, is the requirement for test wrappers to pass a poorly-defined set of environment variables from the build system to the system running the glibc under test. Although some variables are passed explicitly via $(test-wrapper-env), including LD_* variables that simply can't be passed implicitly because of the side effects they'd have on the build system's dynamic linker, others are passed implicitly, including variables such as GCONV_PATH and LOCPATH that could potentially affect the build system's libc (so effectively relying on any such effects not breaking the wrappers). In addition, the code in cross-test-ssh.sh for preserving environment variables is fragile (it depends on how bash formats a list of exported variables, and could well break for multi-line variable definitions where the contents contain things looking like other variable definitions). This patch moves to explicitly passing environment variables via $(test-wrapper-env). Makefile variables that previously used $(test-wrapper) are split up into -before-env and -after-env parts that can be passed separately to the various .sh files used in testing, so those files can then insert environment settings between the two parts. The common default environment settings in make-test-out are made into a separate makefile variable that can also be passed to scripts, rather than many scripts duplicating those settings (for testing an installed glibc, it is desirable to have the GCONV_PATH setting on just one place, so just that one place needs to support it pointing to an installed sysroot instead of the build tree). The default settings are included in the variables such as $(test-program-prefix), so that if tests do not need any non-default settings they can continue to use single variables rather than the split-up variables. Although this patch cleans up LC_ALL=C settings (that being part of the common defaults), various LANG=C and LANGUAGE=C settings remain. Those are generally unnecessary and I propose a subsequent cleanup to remove them. LC_ALL takes precedence over LANG, and while LANGUAGE takes precedence over LC_ALL, it only does so for settings other than LC_ALL=C. So LC_ALL=C on its own is sufficient to ensure the C locale, and anything that gets LC_ALL=C does not need the other settings. While preparing this patch I noticed some tests with .sh files that appeared to do nothing beyond what the generic makefile support for tests can do (localedata/tst-wctype.sh - the makefiles support -ENV variables and .input files - and localedata/tst-mbswcs.sh - just runs five tests that could be run individually from the makefile). So I propose another subsequent cleanup to move those to using the generic support instead of special .sh files. Tested x86_64 (native) and powerpc32 (cross). * Makeconfig (run-program-env): New variable. (run-program-prefix-before-env): Likewise. (run-program-prefix-after-env): Likewise. (run-program-prefix): Define in terms of new variables. (built-program-cmd-before-env): New variable. (built-program-cmd-after-env): Likewise. (built-program-cmd): Define in terms of new variables. (test-program-prefix-before-env): New variable. (test-program-prefix-after-env): Likewise. (test-program-prefix): Define in terms of new variables. (test-program-cmd-before-env): New variable. (test-program-cmd-after-env): Likewise. (test-program-cmd): Define in terms of new variables. * Rules (make-test-out): Use $(run-program-env). * scripts/cross-test-ssh.sh (env_blacklist): Remove variable. (help): Do not mention environment variables. Mention --timeoutfactor option. (timeoutfactor): New variable. (blacklist_exports): Remove function. (exports): Remove variable. (command): Do not include ${exports}. * manual/install.texi (Configuring and compiling): Do not mention test wrappers preserving environment variables. Mention that last assignment to a variable must take precedence. * INSTALL: Regenerated. * benchtests/Makefile (run-bench): Use $(run-program-env). * catgets/Makefile ($(objpfx)test1.cat): Use $(built-program-cmd-before-env), $(run-program-env) and $(built-program-cmd-after-env). ($(objpfx)test2.cat): Do not specify environment variables explicitly. ($(objpfx)de/libc.cat): Use $(built-program-cmd-before-env), $(run-program-env) and $(built-program-cmd-after-env). ($(objpfx)test-gencat.out): Use $(test-program-cmd-before-env), $(run-program-env) and $(test-program-cmd-after-env). ($(objpfx)sample.SJIS.cat): Do not specify environment variables explicitly. * catgets/test-gencat.sh: Use test_program_cmd_before_env, run_program_env and test_program_cmd_after_env arguments. * elf/Makefile ($(objpfx)tst-pathopt.out): Use $(run-program-env). * elf/tst-pathopt.sh: Use run_program_env argument. * iconvdata/Makefile ($(objpfx)iconv-test.out): Use $(test-wrapper-env) and $(run-program-env). * iconvdata/run-iconv-test.sh: Use test_wrapper_env and run_program_env arguments. * iconvdata/tst-table.sh: Do not set GCONV_PATH explicitly. * intl/Makefile ($(objpfx)tst-gettext.out): Use $(test-program-prefix-before-env), $(run-program-env) and $(test-program-prefix-after-env). ($(objpfx)tst-gettext2.out): Likewise. * intl/tst-gettext.sh: Use test_program_prefix_before_env, run_program_env and test_program_prefix_after_env arguments. * intl/tst-gettext2.sh: Likewise. * intl/tst-gettext4.sh: Do not set environment variables explicitly. * intl/tst-gettext6.sh: Likewise. * intl/tst-translit.sh: Likewise. * malloc/Makefile ($(objpfx)tst-mtrace.out): Use $(test-program-prefix-before-env), $(run-program-env) and $(test-program-prefix-after-env). * malloc/tst-mtrace.sh: Use test_program_prefix_before_env, run_program_env and test_program_prefix_after_env arguments. * math/Makefile (run-regen-ulps): Use $(run-program-env). * nptl/Makefile ($(objpfx)tst-tls6.out): Use $(run-program-env). * nptl/tst-tls6.sh: Use run_program_env argument. Set LANG=C explicitly with each use of ${test_wrapper_env}. * posix/Makefile ($(objpfx)wordexp-tst.out): Use $(test-program-prefix-before-env), $(run-program-env) and $(test-program-prefix-after-env). * posix/tst-getconf.sh: Do not set environment variables explicitly. * posix/wordexp-tst.sh: Use test_program_prefix_before_env, run_program_env and test_program_prefix_after_env arguments. * stdio-common/tst-printf.sh: Do not set environment variables explicitly. * stdlib/Makefile ($(objpfx)tst-fmtmsg.out): Use $(test-program-prefix-before-env), $(run-program-env) and $(test-program-prefix-after-env). * stdlib/tst-fmtmsg.sh: Use test_program_prefix_before_env, run_program_env and test_program_prefix_after_env arguments. Split $test calls into $test_pre and $test. * timezone/Makefile (build-testdata): Use $(built-program-cmd-before-env), $(run-program-env) and $(built-program-cmd-after-env). localedata/ChangeLog: * Makefile ($(addprefix $(objpfx),$(CTYPE_FILES))): Use $(built-program-cmd-before-env), $(run-program-env) and $(built-program-cmd-after-env). ($(objpfx)sort-test.out): Use $(test-program-prefix-before-env), $(run-program-env) and $(test-program-prefix-after-env). ($(objpfx)tst-fmon.out): Use $(run-program-prefix-before-env), $(run-program-env) and $(run-program-prefix-after-env). ($(objpfx)tst-locale.out): Use $(built-program-cmd-before-env), $(run-program-env) and $(built-program-cmd-after-env). ($(objpfx)tst-trans.out): Use $(run-program-prefix-before-env), $(run-program-env), $(run-program-prefix-after-env), $(test-program-prefix-before-env) and $(test-program-prefix-after-env). ($(objpfx)tst-ctype.out): Use $(test-program-cmd-before-env), $(run-program-env) and $(test-program-cmd-after-env). ($(objpfx)tst-wctype.out): Likewise. ($(objpfx)tst-langinfo.out): Likewise. ($(objpfx)tst-langinfo-static.out): Likewise. * gen-locale.sh: Use localedef_before_env, run_program_env and localedef_after_env arguments. * sort-test.sh: Use test_program_prefix_before_env, run_program_env and test_program_prefix_after_env arguments. * tst-ctype.sh: Use tst_ctype_before_env, run_program_env and tst_ctype_after_env arguments. * tst-fmon.sh: Use run_program_prefix_before_env, run_program_env and run_program_prefix_after_env arguments. * tst-langinfo.sh: Use tst_langinfo_before_env, run_program_env and tst_langinfo_after_env arguments. * tst-locale.sh: Use localedef_before_env, run_program_env and localedef_after_env arguments. * tst-mbswcs.sh: Do not set environment variables explicitly. * tst-numeric.sh: Likewise. * tst-rpmatch.sh: Likewise. * tst-trans.sh: Use run_program_prefix_before_env, run_program_env, run_program_prefix_after_env, test_program_prefix_before_env and test_program_prefix_after_env arguments. * tst-wctype.sh: Use tst_wctype_before_env, run_program_env and tst_wctype_after_env arguments.
* Use existing makefile variables for dependencies on glibc libraries.Joseph Myers2014-05-161-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glibc's Makeconfig defines some variables such as $(libm) and $(libdl) for linking with libraries built by glibc, and nptl/Makeconfig (included by the toplevel Makeconfig) defines others such as $(shared-thread-library). In some places glibc's Makefiles use those variables when linking against the relevant libraries, but in other places they hardcode the location of the libraries in the build tree. This patch cleans up various places to use the variables that already exist (in the case of libm, replacing several duplicate definitions of a $(link-libm) variable in subdirectory Makefiles). (It's not necessarily exactly equivalent to what the existing code does - in particular, $(shared-thread-library) includes libpthread_nonshared, but is replacing places that just referred to libpthread.so. But I think that change is desirable on the general principle of linking things as close as possible to the way in which they would be linked with an installed library, unless there is a clear reason not to do so.) To support running tests with an installed copy of glibc without needing the full build tree from when that copy was built, I think it will be useful to use such variables more generally and systematically - every time the rules for building a test refer to some file from the build tree that's also installed by glibc, use a makefile variable so that the installed-testing case can point those variables to installed copies of the files. This patch just deals with straightforward cases where such variables already exist. It's quite possible some uses of $(shared-thread-library) should actually be a new $(thread-library) variable that's set appropriately in the --disable-shared case, if those uses would in fact work without shared libraries. I didn't change the status quo that those cases hardcode use of a shared library whether or not it's actually needed (but other uses such as $(libm) and $(libdl) would now get the static library if the shared library isn't built, when some previously hardcoded use of the shared library - if they actually need shared libraries, the test itself needs an enable-shared conditional anyway). Tested x86_64. * benchtests/Makefile ($(addprefix $(objpfx)bench-,$(bench-math))): Depend on $(libm), not $(common-objpfx)math/libm.so. ($(addprefix $(objpfx)bench-,$(bench-pthread))): Depend on $(shared-thread-library), not $(common-objpfx)nptl/libpthread.so. * elf/Makefile ($(objpfx)noload): Depend on $(libdl), not $(common-objpfx)dlfcn/libdl.so. ($(objpfx)tst-audit8): Depend on $(libm), not $(common-objpfx)math/libm.so. * malloc/Makefile ($(objpfx)libmemusage.so): Depend on $(libdl), not $(common-objpfx)dlfcn/libdl.so. * math/Makefile ($(addprefix $(objpfx),$(filter-out $(tests-static),$(tests)))): Depend on $(libm), not $(objpfx)libm.so. Do not condition on [$(build-shared) = yes]. ($(objpfx)test-fenv-tls): Depend on $(shared-thread-library), not $(common-objpfx)nptl/libpthread.so. * misc/Makefile ($(objpfx)tst-tsearch): Depend on $(libm), not $(common-objpfx)math/libm.so$(libm.so-version) or $(common-objpfx)math/libm.a depending on [$(build-shared) = yes]. * nptl/Makefile ($(objpfx)tst-unload): Depend on $(libdl), not $(common-objpfx)dlfcn/libdl.so. * setjmp/Makefile (link-libm): Remove variable. ($(objpfx)tst-setjmp-fp): Depend on $(libm), not $(link-libm). * stdio-common/Makefile (link-libm): Remove variable. ($(objpfx)tst-printf-round): Depend on $(libm), not $(link-libm). * stdlib/Makefile (link-libm): Remove variable. ($(objpfx)bug-getcontext): Depend on $(libm), not $(link-libm). ($(objpfx)tst-strtod-round): Likewise. ($(objpfx)tst-tininess): Likewise. ($(objpfx)tst-strtod-underflow): Likewise. ($(objpfx)tst-strtod6): Likewise. ($(objpfx)tst-tls-atexit): Depend on $(shared-thread-library) and $(libdl), not $(common-objpfx)nptl/libpthread.so and $(common-objpfx)dlfcn/libdl.so.
* Make x86_64 fegetenv preserve exception mask (bug 16198).Joseph Myers2014-03-261-1/+1
| | | | | | | | | | | | | Bug 16198 is x86_64 fegetenv wrongly masking exceptions for which traps are enabled, because that's a side-effect of the fnstenv instruction. This patch fixes it to use fldenv immediately after fnstenv, like the i386 version. Tested x86_64 and x86. [BZ #16198] * sysdeps/x86_64/fpu/fegetenv.c (fegetenv): Use fldenv after fnstenv. * math/test-fenv-preserve.c: New file. * math/Makefile (tests): Add test-fenv-preserve.
* Consistently include Makeconfig after defining subdir.Joseph Myers2014-02-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In <https://sourceware.org/ml/libc-alpha/2014-01/msg00196.html> I noted it was necessary to add includes of Makeconfig early in various subdirectory makefiles for the tests-special variable settings added by that patch to be conditional on configuration information. No-one commented on the general question there of whether Makeconfig should always be included immediately after the definition of subdir. This patch implements that early inclusion of Makeconfig in each directory (which is a lot easier than consistent placement of includes of Rules). Includes are added if needed, or moved up if already present. Subdirectory "all:" targets are removed, since Makeconfig provides one. There is potential for further cleanups I haven't done. Rules and Makerules have code such as ifneq "$(findstring env,$(origin headers))" "" headers := endif to override to empty any value of various variables that came from the environment. I think there is a case for Makeconfig setting all the subdirectory variables (other than subdir) to empty to ensure no outside value is going to take effect if a subdirectory fails to define a variable. (A list of such variables, possibly out of date and incomplete, is in manual/maint.texi.) Rules and Makerules would give errors if Makeconfig hadn't already been included, instead of including it themselves. The special code to override values coming from the environment would then be obsolete and could be removed. Tested x86_64, including that installed binaries are identical before and after the patch. * argp/Makefile: Include Makeconfig immediately after defining subdir. * assert/Makefile: Likewise. * benchtests/Makefile: Likewise. * catgets/Makefile: Likewise. * conform/Makefile: Likewise. * crypt/Makefile: Likewise. * csu/Makefile: Likewise. (all): Remove target. * ctype/Makefile: Include Makeconfig immediately after defining subdir. * debug/Makefile: Likewise. * dirent/Makefile: Likewise. * dlfcn/Makefile: Likewise. * gmon/Makefile: Likewise. * gnulib/Makefile: Likewise. * grp/Makefile: Likewise. * gshadow/Makefile: Likewise. * hesiod/Makefile: Likewise. * hurd/Makefile: Likewise. (all): Remove target. * iconvdata/Makefile: Include Makeconfig immediately after defining subdir. * inet/Makefile: Likewise. * intl/Makefile: Likewise. * io/Makefile: Likewise. * libio/Makefile: Likewise. (all): Remove target. * locale/Makefile: Include Makeconfig immediately after defining subdir. * login/Makefile: Likewise. * mach/Makefile: Likewise. (all): Remove target. * malloc/Makefile: Include Makeconfig immediately after defining subdir. (all): Remove target. * manual/Makefile: Include Makeconfig immediately after defining subdir. * math/Makefile: Likewise. * misc/Makefile: Likewise. * nis/Makefile: Likewise. * nss/Makefile: Likewise. * po/Makefile: Likewise. (all): Remove target. * posix/Makefile: Include Makeconfig immediately after defining subdir. * pwd/Makefile: Likewise. * resolv/Makefile: Likewise. * resource/Makefile: Likewise. * rt/Makefile: Likewise. * setjmp/Makefile: Likewise. * shadow/Makefile: Likewise. * signal/Makefile: Likewise. * socket/Makefile: Likewise. * soft-fp/Makefile: Likewise. * stdio-common/Makefile: Likewise. * stdlib/Makefile: Likewise. * streams/Makefile: Likewise. * string/Makefile: Likewise. * sunrpc/Makefile: Likewise. (all): Remove target. * sysvipc/Makefile: Include Makeconfig immediately after defining subdir. * termios/Makefile: Likewise. * time/Makefile: Likewise. * timezone/Makefile: Likewise. (all): Remove target. * wcsmbs/Makefile: Include Makeconfig immediately after defining subdir. * wctype/Makefile: Likewise. libidn/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. localedata/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. (all): Remove target. nptl/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. nptl_db/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir.
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
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* Start generating libm tests automatically with MPFR.Joseph Myers2013-11-291-1/+2
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* Make powerpc-nofpu floating-point state thread-local (bug 15483).Joseph Myers2013-11-191-1/+2
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* Fix static-binary lazy FPU context allocationMaciej W. Rozycki2013-09-091-4/+7
| | | | | | | | | | | | | | | | | | | Long ago static startup did not parse the auxiliary vector and therefore could not get at any `AT_FPUCW' tag to check whether upon FPU context allocation the kernel would use a FPU control word setting different to that provided by the `__fpu_control' variable. Static startup therefore always initialized the FPU control word, forcing immediate FPU context allocation even for binaries that otherwise never used the FPU. As from GIT commit f8f900ecb9096ec47f5b7bb7626e29223c69061a static startup supports parsing the auxiliary vector, so now it can avoid explicit initialization of the FPU control word, just as can dynamic startup, in the usual case where the setting written to the FPU control word would be the same as the kernel uses. This defers FPU context allocation until the binary itself actually pokes at the FPU. Note that the `AT_FPUCW' tag is usually absent from the auxiliary vector in which case _FPU_DEFAULT is assumed to be the kernel default.
* Link extra-libs consistently with libc and ld.so.Joseph Myers2013-05-311-5/+0
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* Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426).Joseph Myers2013-05-081-1/+2
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* Don't use run-via-rtld-prefix for anything other than testsSiddhesh Poyarekar2013-04-111-1/+1
| | | | | | | | | | run-via-rtld-prefix checks whether the program to be run is a static test and skips if it is. This is fine, except that it assumes that the program to be run is the second $^, which is true only for tests. This change creates an rtld-prefix, which is simply the dynamic linker prefix with the necessary arguments and uses that in the non-test targets.
* New Makefile target `regen-ulps'.Carlos O'Donell2013-04-061-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The wiki "Regeneration" page has this to say about update ULPs. "The libm-test-ulps files are semiautomatically updated. To update an ulps baseline, run each of the failing tests (test-float, test-double, etc.) with -u; this will generate a file called ULPs; concatenate each of those files with the existing libm-test-ulps file, after removing any entries for particularly huge numbers of ulps that you do not want to mark as expected. Then run gen-libm-test.pl -n -u FILE where FILE is the concatenated file produced in the previous step. This generates a file called NewUlps which is the new sorted version of libm-test-ulps." The same information is listed in math/README.libm-test, and is a lot of manual work that you often want to run over-and-over again while working on a particular test. The `regen-ulps' convenience target does this automatically for developers. We strictly assume the source tree is readonly and add a new --output-dir option to libm-test.inc to allow for writing out ULPs to $(objpfx). When run the new target does the following: * Starts with the baseline ULPs file. * Runs each of the libm math tests with -u. * Adds new changes seen with -u to the baseline. * Sorts and prepares the test output with gen-libm-test.pl. * Leaves math/NewUlps in your build tree to copy to your source tree, cleanup, and checkin. The math test documentation in math/README.libm-test is updated document the new Makefile target. --- 2013-04-06 Carlos O'Donell <carlos@redhat.com> * Makefile.in (regen-ulps): New target. * math/Makefile [ifneq (no,$(PERL)]: Declare regen-ulps with .PHONY. [ifneq (no,$(PERL)] (run-regen-ulps): New variable. [ifneq (no,$(PERL)] (regen-ulps): New target. [ifeq (no,$(PERL)] (regen-ulps): New target. * math/libm-test.inc (ulps_file_name): Define. (output_dir): New variable. (options): Add "output-dir" option. (parse_opt): Handle 'o' case. (main): If output_dir is non-NULL use it as a prefix otherwise use "". * math/README.libm-test: Update `How can I generate "libm-test-ulps"?'
* New <math.h> macro named issignaling to check for a signaling NaN (sNaN).Thomas Schwinge2013-04-021-1/+1
| | | | It is based on draft TS 18661 and currently enabled as a GNU extension.
* Promote a math test for sNaN handling to the top-level.Thomas Schwinge2013-03-151-1/+1
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* Remove bounded-pointers build system support.Joseph Myers2013-02-151-3/+0
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