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* Disable libm-test test name beautification for M_* constants.Joseph Myers2013-12-191-0/+5
| | | | | | | | | | | | | | | | | | | | | math/gen-libm-test.pl has code to beautify names of various constants, transforming the source form in libm-test.inc into the version appearing in test names in libm-test-ulps files. This has become decreasingly relevant over time for the M_* constants, first as I changed the test names so only the arguments and not the expected results appeared in them, then as tests have moved to auto-libm-test-* so that automatically generated hex float constants get used instead of M_* in test inputs. This patch removes the beautification for all M_* constants. Tested x86_64 and x86 and ulps updated accordingly. Even the one case where this affected the name in the ulps files will disappear once complex function tests are moved to auto-libm-test-*. * math/gen-libm-test.pl (%beautify): Remove M_* constants. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Fix x86/x86_64 expm1 inaccuracy near 0 in directed rounding modes (bug 16293).Joseph Myers2013-12-192-0/+330
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug 16293 is inaccuracy of x86/x86_64 versions of expm1, near 0 in directed rounding modes, that arises from frndint rounding the exponent to 1 or -1 instead of 0, resulting in large cancellation error. This inaccuracy in turn affects other functions such as sinh that use expm1. This patch fixes the problem by setting round-to-nearest mode temporarily around the affected calls to frndint. I don't think this is needed for other uses of frndint, such as in exp itself, as only for expm1 is the cancellation error significant. Tested x86_64 and x86 and ulps updated accordingly. * sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Set round-to-nearest mode when using frndint. * sysdeps/i386/fpu/s_expm1.S (__expm1): Likewise. * sysdeps/i386/fpu/s_expm1f.S (__expm1f): Likewise. * sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Likewise. * math/auto-libm-test-in: Add more tests of expm1. Do not expect sinh test to fail. * math/auto-libm-test-out: Regenerated. * math/libm-test.inc (TEST_COND_x86_64): Remove macro. (TEST_COND_x86): Likewise. (expm1_tonearest_test_data): New array. (expm1_test_tonearest): New function. (expm1_towardzero_test_data): New array. (expm1_test_towardzero): New function. (expm1_downward_test_data): New array. (expm1_test_downward): New function. (expm1_upward_test_data): New array. (expm1_test_upward): New function. (main): Run the new test functions. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Move tests of jn and yn from libm-test.inc to auto-libm-test-in.Joseph Myers2013-12-181-2/+443
| | | | | | | | | | | | | | | | | | | | | | | | | This patch moves tests of jn and yn to auto-libm-test-in, adding the required support for gen-auto-libm-tests (and adding a missing assertion there and fixing logic that was broken for functions with integer arguments). Tested x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add tests of jn and yn. * math/auto-libm-test-out: Regenerated. * math/libm-test.inc (jn_test_data): Use AUTO_TESTS_if_f. (yn_test_data): Likewise. * math/gen-auto-libm-tests.c (func_calc_method): Add value mpfr_if_f. (func_calc_desc): Add mpfr_if_f union field. (FUNC_mpfr_if_f): New macro. (test_functions): Add jn and yn. (calc_generic_results): Assert type of second input for mpfr_ff_f. Handle mpfr_if_f. (output_for_one_input_case): Disable all checking for arguments fitting floating-point types in case of an integer argument. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Fix ldbl-128 logl for subnormals (bug 16338).Joseph Myers2013-12-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 16338, ldbl-128 logl not handling subnormals (with consequent inaccuracy for lgammal as well). The fix is simply to use __frexpl when determining the exponent, as done already in log2l and log10l. Given the lack of testing of small arguments to any of the log* functions, appropriate tests are added for all of them. Tested x86_64 and x86 and ulps updated accordingly, and spot tests also run for mips64 to confirm the ldbl-128 fix. Note that while this fixes lgammal inaccuracy for small positive arguments, I suspect that there will still be problems with spurious underflows in that case. * sysdeps/ieee754/ldbl-128/e_logl.c (__ieee754_logl): Use __frexpl to determine exponent and adjust argument to have exponent of -1. * math/auto-libm-test-in: Add more tests of log, log10, log1p and log2. * math/auto-libm-test-out: Regenerated. * sysdeps/x86_64/fpu/libm-test-ulps: Update.
* Move tests of atan2, hypot and pow from libm-test.inc to auto-libm-test-in.Joseph Myers2013-12-161-0/+153
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* Update file name in x86_64 ifunc listAllan McRae2013-12-161-1/+1
| | | | File name update missed in commit 584b18eb.
* Add strstr with unaligned loads. Fixes bug 12100.Ondřej Bílka2013-12-148-494/+415
| | | | | | | | | | A sse42 version of strstr used pcmpistr instruction which is quite ineffective. A faster way is look for pairs of characters which is uses sse2, is faster than pcmpistr and for real strings a pairs we look for are relatively rare. For linear time complexity we use buy or rent technique which switches to two-way algorithm when superlinear behaviour is detected.
* Update x86_64 ULps for AMD K10Markus Trippelsdorf2013-12-091-2/+8
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* Move tests of lgamma from libm-test.inc to auto-libm-test-in.Joseph Myers2013-12-081-0/+80
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* Fix tgamma errno setting on underflow (bug 6810).Joseph Myers2013-12-051-0/+3
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* Move TEST_f_f tests for [l-y]* functions from libm-test.inc to ↵Joseph Myers2013-12-051-4/+2104
| | | | auto-libm-test-in.
* Fix Bessel function error handling (bug 6807, bug 15901).Joseph Myers2013-12-041-0/+5
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* Fix exp missing underflows (bug 15268, bug 15425).Joseph Myers2013-12-031-0/+52
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* Fix erfc errno setting on underflow (bug 6786).Joseph Myers2013-12-031-0/+3
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* Move TEST_f_f tests for [e-j]* functions from libm-test.inc to ↵Joseph Myers2013-12-031-0/+244
| | | | auto-libm-test-in.
* Move TEST_f_f tests for [a-c]* functions from libm-test.inc to ↵Joseph Myers2013-11-301-0/+653
| | | | auto-libm-test-in.
* Fix dbl-64 e_sqrt.c for non-default rounding modes (bug 16271).Joseph Myers2013-11-281-0/+1
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* Fix typo in _dl_tlsdesc_resolve_hold.Ondřej Bílka2013-11-261-1/+1
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* Fix spurious "inexact" exceptions from x86 pow with NaN argument (bug 16167).Joseph Myers2013-11-161-0/+3
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* rename configure.in to configure.acMike Frysinger2013-10-304-2/+2
| | | | | | | Autoconf has been deprecating configure.in for quite a long time. Rename all our configure.in and preconfigure.in files to .ac. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Use p2align instead ALIGNOndřej Bílka2013-10-089-323/+288
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* PowerPC floating point little-endian [1 of 15]Alan Modra2013-10-041-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | http://sourceware.org/ml/libc-alpha/2013-08/msg00081.html This is the first of a series of patches to ban ieee854_long_double and the ieee854_long_double macros when using IBM long double. union ieee854_long_double just isn't correct for IBM long double, especially when little-endian, and pretending it is OK has allowed a number of bugs to remain undetected in sysdeps/ieee754/ldbl-128ibm/. This changes the few places in generic code that use it. * stdio-common/printf_size.c (__printf_size): Don't use union ieee854_long_double in fpnum union. * stdio-common/printf_fphex.c (__printf_fphex): Likewise. Use signbit macro to retrieve sign from long double. * stdio-common/printf_fp.c (___printf_fp): Use signbit macro to retrieve sign from long double. * sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Adjust for fpnum change. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise. * sysdeps/x86_64/fpu/printf_fphex.c: Likewise. * math/test-misc.c (main): Don't use union ieee854_long_double. ports/ * sysdeps/ia64/fpu/printf_fphex.c: Adjust for fpnum change.
* Faster strrchr.Ondřej Bílka2013-09-266-943/+199
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* BZ #15754: CVE-2013-4788Carlos O'Donell2013-09-231-0/+5
| | | | | | | | | | | | The pointer guard used for pointer mangling was not initialized for static applications resulting in the security feature being disabled. The pointer guard is now correctly initialized to a random value for static applications. Existing static applications need to be recompiled to take advantage of the fix. The test tst-ptrguard1-static and tst-ptrguard1 add regression coverage to ensure the pointer guards are sufficiently random and initialized to a default value.
* Make __ffs hiddenAndreas Schwab2013-09-201-0/+1
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* Faster strchr implementation.Ondřej Bílka2013-09-114-200/+160
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* Fix lgammaf spurious underflow (bug 15427).Joseph Myers2013-09-031-0/+56
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* Add unaligned strcmp.Ondřej Bílka2013-09-034-2/+222
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* Fix spurious jnf underflows (bug 14155).Joseph Myers2013-09-021-2/+17
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* Fix typos.Ondřej Bílka2013-08-302-2/+2
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* Fix rawmemchr regression on bulldozer.Ondřej Bílka2013-08-302-109/+0
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* Fix typos.Ondřej Bílka2013-08-212-3/+3
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* Update x86 and x86_64 ulps on AMD FX-8350 with GCC 4.8.1.Jeroen Albers2013-07-051-14/+133
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* Update x86_64 ULPs.Markus Trippelsdorf2013-07-021-2/+318
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* Regenerate x86 and x86_64 ulps.Joseph Myers2013-07-021-833/+43
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* Skip SSE4.2 versions on Intel SilvermontLiubov Dmitrieva2013-06-285-15/+37
| | | | SSE2/SSSE3 versions are faster than SSE4.2 versions on Intel Silvermont.
* Fix buffers overrun in x86_64 memcmp-ssse3.SLiubov Dmitrieva2013-06-261-4/+2
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* Set fast unaligned load flag for new Intel microarchitectureLiubov Dmitrieva2013-06-141-0/+7
| | | | | | | | | I have small patch for new Intel Silvermont machines. http://newsroom.intel.com/community/intel_newsroom/blog/2013/05/06/intel-launches-low-power-high-performance-silvermont-microarchitecture I checked this on my machine and see that strcpy, ... unaligned versions are faster than ssse3 versions.
* Add rtld-memset.S for x86_64Siddhesh Poyarekar2013-06-152-1/+37
| | | | | | Resolves: BZ #15627 Add an assembler version of rtld-memset to avoid using SSE registers.
* Remove trailing whitespace.Joseph Myers2013-06-053-3/+3
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* Avoid crashing in LD_DEBUG when program name is unavailableSiddhesh Poyarekar2013-05-291-3/+1
| | | | | | | | | Resolves: #15465 The program name may be unavailable if the user application tampers with argc and argv[]. Some parts of the dynamic linker caters for this while others don't, so this patch consolidates the check and fallback into a single macro and updates all users.
* Test drem and pow10 in libm-test.inc.Joseph Myers2013-05-241-0/+26
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* Use same tests for isfinite/finite, lgamma/gamma.Joseph Myers2013-05-241-0/+16
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* Don't include expected results in libm-test test names.Joseph Myers2013-05-221-2154/+2154
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* Faster memset on x64Ondrej Bilka2013-05-201-1315/+90
| | | | | | | | | This implementation speed up memset in several ways. First is avoiding expensive computed jump. Second is using fact that arguments of memset are most of time aligned to 8 bytes. Benchmark results on: kam.mff.cuni.cz/~ondra/benchmark_string/memset_profile_result27_04_13.tar.bz2
* Faster memcpy on x64.Ondrej Bilka2013-05-204-8/+185
| | | | | | | | | We add new memcpy version that uses unaligned loads which are fast on modern processors. This allows second improvement which is avoiding computed jump which is relatively expensive operation. Tests available here: http://kam.mff.cuni.cz/~ondra/memcpy_profile_result27_04_13.tar.bz2
* Handle sincos with generic libm-test logic.Joseph Myers2013-05-191-6/+6
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* Add #include <stdint.h> for uint[32|64]_t usage (except installed headers).Ryan S. Arnold2013-05-162-0/+3
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* Use movq for 64-bit operationsPeter Collingbourne2013-05-151-2/+4
| | | | | | | | | | | The EXTRACT_WORDS64 and INSERT_WORDS64 macros use movd for a 64-bit operation. Somehow gcc manages to turn this into movq, but LLVM won't. 2013-05-15 Peter Collingbourne <pcc@google.com> * sysdeps/x86_64/fpu/math_private.h (MOVQ): New macro. (EXTRACT_WORDS64) Use where appropriate. (INSERT_WORDS64) Likewise.
* Use x constraints for operands to vfmaddss and vfmaddsdPeter Collingbourne2013-05-152-2/+2
| | | | | | | | | | | | | | | While these instructions accept memory operands, only one operand may be a memory operand. Giving two operands xm constraints gives the compiler the option of using memory for both operands, which would result in invalid assembly code. Using x for all operands is more appropriate, as most x86_64 calling conventions will pass the arguments in registers anyway. 2013-05-15 Peter Collingbourne <pcc@google.com> * sysdeps/x86_64/fpu/multiarch/s_fma.c (__fma_fma4): Replace xm constraints with x constraints. * sysdeps/x86_64/fpu/multiarch/s_fmaf.c (__fmaf_fma4): Likewise.
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