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| author | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:40:09 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:40:09 +0000 |
| commit | ec94343f592df68ba1ba49bb2c558f7d2629387c (patch) | |
| tree | 7430394b9a38cb5527558363186ffdb4546761b7 | |
| parent | fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604 (diff) | |
| download | glibc-ec94343f592df68ba1ba49bb2c558f7d2629387c.tar.gz glibc-ec94343f592df68ba1ba49bb2c558f7d2629387c.tar.xz glibc-ec94343f592df68ba1ba49bb2c558f7d2629387c.zip | |
Add femode_t functions.
TS 18661-1 defines a type femode_t to represent the set of dynamic floating-point control modes (such as the rounding mode and trap enablement modes), and functions fegetmode and fesetmode to manipulate those modes (without affecting other state such as the raised exception flags) and a corresponding macro FE_DFL_MODE. This patch series implements those interfaces for glibc. This first patch adds the architecture-independent pieces, the x86 and x86_64 implementations, and the <bits/fenv.h> and ABI baseline updates for all architectures so glibc keeps building and passing the ABI tests on all architectures. Subsequent patches add the fegetmode and fesetmode implementations for other architectures. femode_t is generally an integer type - the same type as fenv_t, or as the single element of fenv_t where fenv_t is a structure containing a single integer (or the single relevant element, where it has elements for both status and control registers) - except where architecture properties or consistency with the fenv_t implementation indicate otherwise. FE_DFL_MODE follows FE_DFL_ENV in whether it's a magic pointer value (-1 cast to const femode_t *), a value that can be distinguished from valid pointers by its high bits but otherwise contains a representation of the desired register contents, or a pointer to a constant variable (the powerpc case; __fe_dfl_mode is added as an exported constant object, an alias to __fe_dfl_env). Note that where architectures (that share a register between control and status bits) gain definitions of new floating-point control or status bits in future, the implementations of fesetmode for those architectures may need updating (depending on whether the new bits are control or status bits and what the implementation does with previously unknown bits), just like existing implementations of <fenv.h> functions that take care not to touch reserved bits may need updating when the set of reserved bits changes. (As any new bits are outside the scope of ISO C, that's just a quality-of-implementation issue for supporting them, not a conformance issue.) As with fenv_t, femode_t should properly include any software DFP rounding mode (and for both fenv_t and femode_t I'd consider that fragment of DFP support appropriate for inclusion in glibc even in the absence of the rest of libdfp; hardware DFP rounding modes should already be included if the definitions of which bits are status / control bits are correct). Tested for x86_64, x86, mips64 (hard float, and soft float to test the fallback version), arm (hard float) and powerpc (hard float, soft float and e500). Other architecture versions are untested. * math/fegetmode.c: New file. * math/fesetmode.c: Likewise. * sysdeps/i386/fpu/fegetmode.c: Likewise. * sysdeps/i386/fpu/fesetmode.c: Likewise. * sysdeps/x86_64/fpu/fegetmode.c: Likewise. * sysdeps/x86_64/fpu/fesetmode.c: Likewise. * math/fenv.h: Update comment on inclusion of <bits/fenv.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise. * bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * manual/arith.texi (FE_DFL_MODE): Document macro. (fegetmode): Document function. (fesetmode): Likewise. * math/Versions (fegetmode): New libm symbol at version GLIBC_2.25. (fesetmode): Likewise. * math/Makefile (libm-support): Add fegetmode and fesetmode. (tests): Add test-femode and test-femode-traps. * math/test-femode-traps.c: New file. * math/test-femode.c: Likewise. * sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as alias for __fe_dfl_env. * sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at version GLIBC_2.25. * 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.
61 files changed, 978 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog index da1fcc9cef..5f06ead391 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,116 @@ +2016-09-07 Joseph Myers <joseph@codesourcery.com> + + * math/fegetmode.c: New file. + * math/fesetmode.c: Likewise. + * sysdeps/i386/fpu/fegetmode.c: Likewise. + * sysdeps/i386/fpu/fesetmode.c: Likewise. + * sysdeps/x86_64/fpu/fegetmode.c: Likewise. + * sysdeps/x86_64/fpu/fesetmode.c: Likewise. + * math/fenv.h: Update comment on inclusion of <bits/fenv.h>. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function + declaration. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise. + * bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New + typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable + declaration. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] + (femode_t): New typedef. + [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. + * manual/arith.texi (FE_DFL_MODE): Document macro. + (fegetmode): Document function. + (fesetmode): Likewise. + * math/Versions (fegetmode): New libm symbol at version + GLIBC_2.25. + (fesetmode): Likewise. + * math/Makefile (libm-support): Add fegetmode and fesetmode. + (tests): Add test-femode and test-femode-traps. + * math/test-femode-traps.c: New file. + * math/test-femode.c: Likewise. + * sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as + alias for __fe_dfl_env. + * sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. + * sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c + (__fe_dfl_mode): Likewise. + * sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at + version GLIBC_2.25. + * 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. + 2016-09-06 H.J. Lu <hongjiu.lu@intel.com> [BZ #20495] diff --git a/NEWS b/NEWS index 369655f5a1..ba1ec715a9 100644 --- a/NEWS +++ b/NEWS @@ -32,8 +32,9 @@ Version 2.25 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the problem. -* The fesetexcept and fetestexceptflag functions from TS 18661-1:2014 are - added to libm. +* New <fenv.h> features from TS 18661-1:2014 are added to libm: the + fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, + the femode_t type and the FE_DFL_MODE macro. * The <sys/quota.h> header now includes the <linux/quota.h> header. Support for the Linux quota interface which predates kernel version 2.4.22 has diff --git a/bits/fenv.h b/bits/fenv.h index f9b61d5e42..deeceeeec0 100644 --- a/bits/fenv.h +++ b/bits/fenv.h @@ -53,3 +53,11 @@ fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1l) + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/manual/arith.texi b/manual/arith.texi index 3a04bc2d62..23b93736ac 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -1127,6 +1127,39 @@ non-zero value otherwise. @end deftypefun @noindent +TS 18661-1:2014 defines additional functions to save and restore +floating-point control modes (such as the rounding mode and whether +traps are enabled) while leaving other status (such as raised flags) +unchanged. + +@vindex FE_DFL_MODE +The special macro @code{FE_DFL_MODE} may be passed to +@code{fesetmode}. It represents the floating-point control modes at +program start. + +@comment fenv.h +@comment ISO +@deftypefun int fegetmode (femode_t *@var{modep}) +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Store the floating-point control modes in the variable pointed to by +@var{modep}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. +@end deftypefun + +@comment fenv.h +@comment ISO +@deftypefun int fesetmode (const femode_t *@var{modep}) +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Set the floating-point control modes to those described by +@var{modep}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. +@end deftypefun + +@noindent To control for individual exceptions if raising them causes a trap to occur, you can use the following two functions. diff --git a/math/Makefile b/math/Makefile index 6a90a367ab..fc48960fb0 100644 --- a/math/Makefile +++ b/math/Makefile @@ -41,7 +41,8 @@ libm-support = s_lib_version s_matherr s_signgam \ fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \ ftestexcept fegetround fesetround fegetenv feholdexcpt \ fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \ - fegetexcept fesetexcept fetestexceptflag + fegetexcept fesetexcept fetestexceptflag fegetmode \ + fesetmode # Wrappers for these functions generated per type using a file named # <func>_template.c and the appropriate math-type-macros-<TYPE>.h. @@ -152,7 +153,8 @@ tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \ test-signgam-uint test-signgam-uint-init test-signgam-ullong \ test-signgam-ullong-init test-nan-overflow test-nan-payload \ test-fexcept test-fexcept-traps test-fesetexcept \ - test-fesetexcept-traps test-fetestexceptflag $(tests-static) + test-fesetexcept-traps test-fetestexceptflag test-femode \ + test-femode-traps $(tests-static) tests-static = test-fpucw-static test-fpucw-ieee-static \ test-signgam-uchar-static test-signgam-uchar-init-static \ test-signgam-uint-static test-signgam-uint-init-static \ diff --git a/math/Versions b/math/Versions index 1c1683fed4..a429221340 100644 --- a/math/Versions +++ b/math/Versions @@ -215,6 +215,6 @@ libm { nextdown; nextdownf; nextdownl; } GLIBC_2.25 { - fesetexcept; fetestexceptflag; + fesetexcept; fetestexceptflag; fegetmode; fesetmode; } } diff --git a/math/fegetmode.c b/math/fegetmode.c new file mode 100644 index 0000000000..25f299fc13 --- /dev/null +++ b/math/fegetmode.c @@ -0,0 +1,27 @@ +/* Store current floating-point control modes. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> + +int +fegetmode (femode_t *modep) +{ + /* Nothing to do. */ + return 0; +} +stub_warning (fegetmode) diff --git a/math/fenv.h b/math/fenv.h index 10d32db909..9006aa2fff 100644 --- a/math/fenv.h +++ b/math/fenv.h @@ -38,6 +38,12 @@ fexcept_t type for object representing the floating-point exception flags including status associated with the flags + femode_t type for object representing floating-point control modes + + FE_DFL_MODE macro of type pointer to const femode_t to be used as the + argument to fesetmode; in this case the default control + modes will be used + The following macros are defined iff the implementation supports this kind of exception. FE_INEXACT inexact result @@ -122,6 +128,18 @@ extern int fesetenv (const fenv_t *__envp) __THROW; extern int feupdateenv (const fenv_t *__envp) __THROW; +/* Control modes. */ + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Store the current floating-point control modes in the object + pointed to by MODEP. */ +extern int fegetmode (femode_t *__modep) __THROW; + +/* Establish the floating-point control modes represented by the + object pointed to by MODEP. */ +extern int fesetmode (const femode_t *__modep) __THROW; +#endif + /* Include optimization. */ #ifdef __OPTIMIZE__ # include <bits/fenvinline.h> diff --git a/math/fesetmode.c b/math/fesetmode.c new file mode 100644 index 0000000000..0d040e49a4 --- /dev/null +++ b/math/fesetmode.c @@ -0,0 +1,27 @@ +/* Install given floating-point control modes. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> + +int +fesetmode (const femode_t *modep) +{ + /* Nothing to do. */ + return 0; +} +stub_warning (fesetmode) diff --git a/math/test-femode-traps.c b/math/test-femode-traps.c new file mode 100644 index 0000000000..dd22765831 --- /dev/null +++ b/math/test-femode-traps.c @@ -0,0 +1,149 @@ +/* Test femode_t functions: test handling of exception traps. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <stdio.h> +#include <math-tests.h> + +static int +test_ee (int exc1, int exc2) +{ + int result = 0; + printf ("testing %x %x\n", (unsigned int) exc1, (unsigned int) exc2); + + fedisableexcept (FE_ALL_EXCEPT); + int ret = feenableexcept (exc1); + if (ret == -1) + { + if (EXCEPTION_ENABLE_SUPPORTED (exc1)) + { + puts ("first feenableexcept failed unexpectedly"); + result = 1; + } + else + puts ("first feenableexcept failed, cannot test"); + return result; + } + femode_t saved; + ret = fegetmode (&saved); + if (ret != 0) + { + puts ("fegetmode failed"); + result = 1; + return result; + } + fedisableexcept (FE_ALL_EXCEPT); + ret = feenableexcept (exc2); + if (ret == -1) + { + if (EXCEPTION_ENABLE_SUPPORTED (exc2)) + { + puts ("second feenableexcept failed unexpectedly"); + result = 1; + } + else + puts ("second feenableexcept failed, cannot test"); + return result; + } + ret = fesetmode (&saved); + if (ret != 0) + { + puts ("fesetmode failed"); + result = 1; + return result; + } + /* Verify that the set of enabled traps was restored. */ + ret = fegetexcept (); + if (ret != exc1) + { + printf ("restored enabled traps %x not %x\n", (unsigned int) ret, + (unsigned int) exc1); + result = 1; + } + /* Likewise, with default modes. */ + ret = fesetmode (FE_DFL_MODE); + if (ret != 0) + { + puts ("fesetmode (FE_DFL_MODE) failed"); + result = 1; + return result; + } + ret = fegetexcept (); + if (ret != 0) + { + printf ("FE_DFL_MODE enabled traps %x not 0\n", (unsigned int) ret); + result = 1; + } + + return result; +} + +static int +test_e (int exc1) +{ + int result = 0; + + result |= test_ee (exc1, 0); + result |= test_ee (exc1, FE_ALL_EXCEPT); +#ifdef FE_DIVBYZERO + result |= test_ee (exc1, FE_DIVBYZERO); +#endif +#ifdef FE_INEXACT + result |= test_ee (exc1, FE_INEXACT); +#endif +#ifdef FE_INVALID + result |= test_ee (exc1, FE_INVALID); +#endif +#ifdef FE_OVERFLOW + result |= test_ee (exc1, FE_OVERFLOW); +#endif +#ifdef FE_UNDERFLOW + result |= test_ee (exc1, FE_UNDERFLOW); +#endif + + return result; +} + +static int +do_test (void) +{ + int result = 0; + + result |= test_e (0); + result |= test_e (FE_ALL_EXCEPT); +#ifdef FE_DIVBYZERO + result |= test_e (FE_DIVBYZERO); +#endif +#ifdef FE_INEXACT + result |= test_e (FE_INEXACT); +#endif +#ifdef FE_INVALID + result |= test_e (FE_INVALID); +#endif +#ifdef FE_OVERFLOW + result |= test_e (FE_OVERFLOW); +#endif +#ifdef FE_UNDERFLOW + result |= test_e (FE_UNDERFLOW); +#endif + + return result; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" diff --git a/math/test-femode.c b/math/test-femode.c new file mode 100644 index 0000000000..1e80f32225 --- /dev/null +++ b/math/test-femode.c @@ -0,0 +1,231 @@ +/* Test femode_t functions. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <stdio.h> +#include <math-tests.h> + +static int +test_mmee (int mode1, int mode2, int exc1, int exc2) +{ + int result = 0; + printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2, + (unsigned int) exc1, (unsigned int) exc2); + + feclearexcept (FE_ALL_EXCEPT); + int ret = fesetround (mode1); + if (ret != 0) + { + if (ROUNDING_TESTS (float, mode1)) + { + puts ("first fesetround failed unexpectedly"); + result = 1; + } + else + puts ("first fesetround failed, cannot test"); + return result; + } + ret = fesetexcept (exc1); + if (ret != 0) + { + if (EXCEPTION_TESTS (float) || exc1 == 0) + { + puts ("first fesetexcept failed unexpectedly"); + result = 1; + } + else + puts ("first fesetexcept failed, cannot test"); + return result; + } + femode_t saved; + ret = fegetmode (&saved); + if (ret != 0) + { + puts ("fegetmode failed"); + result = 1; + return result; + } + feclearexcept (FE_ALL_EXCEPT); + ret = fesetround (mode2); + if (ret != 0) + { + if (ROUNDING_TESTS (float, mode2)) + { + puts ("second fesetround failed unexpectedly"); + result = 1; + } + else + puts ("second fesetround failed, cannot test"); + return result; + } + ret = fesetexcept (exc2); + if (ret != 0) + { + if (EXCEPTION_TESTS (float) || exc2 == 0) + { + puts ("second fesetexcept failed unexpectedly"); + result = 1; + } + else + puts ("second fesetexcept failed, cannot test"); + return result; + } + ret = fesetmode (&saved); + if (ret != 0) + { + puts ("fesetmode failed"); + result = 1; + return result; + } + /* Verify that the rounding mode was restored but the exception + flags remain unchanged. */ + ret = fegetround (); + if (ret != mode1) + { + printf ("restored rounding mode %x not %x\n", (unsigned int) ret, + (unsigned int) mode1); + result = 1; + } + ret = fetestexcept (FE_ALL_EXCEPT); + if (ret != exc2) + { + printf ("exceptions %x not %x\n", (unsigned int) ret, + (unsigned int) exc2); + result = 1; + } + /* Likewise, with default modes. */ + ret = fesetmode (FE_DFL_MODE); + if (ret != 0) + { + puts ("fesetmode (FE_DFL_MODE) failed"); + result = 1; + return result; + } + ret = fegetround (); + if (ret != FE_TONEAREST) + { + printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret, + (unsigned int) FE_TONEAREST); + result = 1; + } + ret = fetestexcept (FE_ALL_EXCEPT); + if (ret != exc2) + { + printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret, + (unsigned int) exc2); + result = 1; + } + return result; +} + +static int +test_mme (int mode1, int mode2, int exc1) +{ + int result = 0; + + result |= test_mmee (mode1, mode2, exc1, 0); + result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT); +#ifdef FE_DIVBYZERO + result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO); +#endif +#ifdef FE_INEXACT + result |= test_mmee (mode1, mode2, exc1, FE_INEXACT); +#endif +#ifdef FE_INVALID + result |= test_mmee (mode1, mode2, exc1, FE_INVALID); +#endif +#ifdef FE_OVERFLOW + result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW); +#endif +#ifdef FE_UNDERFLOW + result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW); +#endif + + return result; +} + +static int +test_mm (int mode1, int mode2) +{ + int result = 0; + + result |= test_mme (mode1, mode2, 0); + result |= test_mme (mode1, mode2, FE_ALL_EXCEPT); +#ifdef FE_DIVBYZERO + result |= test_mme (mode1, mode2, FE_DIVBYZERO); +#endif +#ifdef FE_INEXACT + result |= test_mme (mode1, mode2, FE_INEXACT); +#endif +#ifdef FE_INVALID + result |= test_mme (mode1, mode2, FE_INVALID); +#endif +#ifdef FE_OVERFLOW + result |= test_mme (mode1, mode2, FE_OVERFLOW); +#endif +#ifdef FE_UNDERFLOW + result |= test_mme (mode1, mode2, FE_UNDERFLOW); +#endif + + return result; +} + +static int +test_m (int mode1) +{ + int result = 0; + +#ifdef FE_DOWNWARD + result |= test_mm (mode1, FE_DOWNWARD); +#endif +#ifdef FE_TONEAREST + result |= test_mm (mode1, FE_TONEAREST); +#endif +#ifdef FE_TOWARDZERO + result |= test_mm (mode1, FE_TOWARDZERO); +#endif +#ifdef FE_UPWARD + result |= test_mm (mode1, FE_UPWARD); +#endif + + return result; +} + +static int +do_test (void) +{ + int result = 0; + +#ifdef FE_DOWNWARD + result |= test_m (FE_DOWNWARD); +#endif +#ifdef FE_TONEAREST + result |= test_m (FE_TONEAREST); +#endif +#ifdef FE_TOWARDZERO + result |= test_m (FE_TOWARDZERO); +#endif +#ifdef FE_UPWARD + result |= test_m (FE_UPWARD); +#endif + + return result; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" diff --git a/sysdeps/aarch64/bits/fenv.h b/sysdeps/aarch64/bits/fenv.h index aced0d33b2..9df57a1bbf 100644 --- a/sysdeps/aarch64/bits/fenv.h +++ b/sysdeps/aarch64/bits/fenv.h @@ -72,3 +72,11 @@ fenv_t; /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/alpha/fpu/bits/fenv.h b/sysdeps/alpha/fpu/bits/fenv.h index b7da4a0eae..0688898ce7 100644 --- a/sysdeps/alpha/fpu/bits/fenv.h +++ b/sysdeps/alpha/fpu/bits/fenv.h @@ -131,3 +131,11 @@ typedef unsigned long int fenv_t; /* The system calls to talk to the kernel's FP code. */ extern unsigned long int __ieee_get_fp_control (void) __THROW; extern void __ieee_set_fp_control (unsigned long int __value) __THROW; + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned long int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) 0x8800000000000000UL) +#endif diff --git a/sysdeps/arm/bits/fenv.h b/sysdeps/arm/bits/fenv.h index 8e89fc1819..c82fecb48f 100644 --- a/sysdeps/arm/bits/fenv.h +++ b/sysdeps/arm/bits/fenv.h @@ -80,3 +80,11 @@ fenv_t; /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/hppa/fpu/bits/fenv.h b/sysdeps/hppa/fpu/bits/fenv.h index cae9daeb04..e35e3553f9 100644 --- a/sysdeps/hppa/fpu/bits/fenv.h +++ b/sysdeps/hppa/fpu/bits/fenv.h @@ -89,3 +89,11 @@ typedef struct /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/i386/fpu/fegetmode.c b/sysdeps/i386/fpu/fegetmode.c new file mode 100644 index 0000000000..06d4d84768 --- /dev/null +++ b/sysdeps/i386/fpu/fegetmode.c @@ -0,0 +1,32 @@ +/* Store current floating-point control modes. i386 version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <fpu_control.h> +#include <unistd.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> + +int +fegetmode (femode_t *modep) +{ + _FPU_GETCW (modep->__control_word); + if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0) + __asm__ ("stmxcsr %0" : "=m" (modep->__mxcsr)); + return 0; +} diff --git a/sysdeps/i386/fpu/fesetmode.c b/sysdeps/i386/fpu/fesetmode.c new file mode 100644 index 0000000000..cca5a1ad0c --- /dev/null +++ b/sysdeps/i386/fpu/fesetmode.c @@ -0,0 +1,54 @@ +/* Install given floating-point control modes. i386 version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <fpu_control.h> +#include <unistd.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> + +/* All exceptions, including the x86-specific "denormal operand" + exception. */ +#define FE_ALL_EXCEPT_X86 (FE_ALL_EXCEPT | __FE_DENORM) + +int +fesetmode (const femode_t *modep) +{ + fpu_control_t cw; + if (modep == FE_DFL_MODE) + cw = _FPU_DEFAULT; + else + cw = modep->__control_word; + _FPU_SETCW (cw); + if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0) + { + unsigned int mxcsr; + __asm__ ("stmxcsr %0" : "=m" (mxcsr)); + /* Preserve SSE exception flags but restore other state in + MXCSR. */ + mxcsr &= FE_ALL_EXCEPT_X86; + if (modep == FE_DFL_MODE) + /* Default MXCSR state has all bits zero except for those + masking exceptions. */ + mxcsr |= FE_ALL_EXCEPT_X86 << 7; + else + mxcsr |= modep->__mxcsr & ~FE_ALL_EXCEPT_X86; + __asm__ ("ldmxcsr %0" : : "m" (mxcsr)); + } + return 0; +} diff --git a/sysdeps/ia64/bits/fenv.h b/sysdeps/ia64/bits/fenv.h index 9bb20de27b..5945380889 100644 --- a/sysdeps/ia64/bits/fenv.h +++ b/sysdeps/ia64/bits/fenv.h @@ -94,3 +94,11 @@ typedef unsigned long int fenv_t; s0, s2, and s3. */ # define FE_NONIEEE_ENV ((const fenv_t *) 0xc009a04d0270037fUL) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned long int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) 0xc009804c0270033fUL) +#endif diff --git a/sysdeps/m68k/fpu/bits/fenv.h b/sysdeps/m68k/fpu/bits/fenv.h index 2228861624..b8e52b290e 100644 --- a/sysdeps/m68k/fpu/bits/fenv.h +++ b/sysdeps/m68k/fpu/bits/fenv.h @@ -85,3 +85,11 @@ fenv_t; /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/microblaze/bits/fenv.h b/sysdeps/microblaze/bits/fenv.h index 3891f4a186..0d2ab2bc58 100644 --- a/sysdeps/microblaze/bits/fenv.h +++ b/sysdeps/microblaze/bits/fenv.h @@ -40,3 +40,11 @@ typedef unsigned int fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1l) + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/mips/bits/fenv.h b/sysdeps/mips/bits/fenv.h index f829bd3807..6341ee279e 100644 --- a/sysdeps/mips/bits/fenv.h +++ b/sysdeps/mips/bits/fenv.h @@ -83,3 +83,11 @@ fenv_t; /* Floating-point environment where none of the exception is masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/nacl/libm.abilist b/sysdeps/nacl/libm.abilist index 28897730fa..85ee684a1a 100644 --- a/sysdeps/nacl/libm.abilist +++ b/sysdeps/nacl/libm.abilist @@ -380,5 +380,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/nios2/bits/fenv.h b/sysdeps/nios2/bits/fenv.h index 9d046217c8..8ac3831ed9 100644 --- a/sysdeps/nios2/bits/fenv.h +++ b/sysdeps/nios2/bits/fenv.h @@ -42,3 +42,11 @@ typedef unsigned int fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1) + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/powerpc/Versions b/sysdeps/powerpc/Versions index b959ea49fe..95849668f2 100644 --- a/sysdeps/powerpc/Versions +++ b/sysdeps/powerpc/Versions @@ -3,6 +3,9 @@ libm { # symbols used in macros from sysdeps/powerpc/bits/fenv.h __fe_dfl_env; __fe_enabled_env; __fe_nonieee_env; __fe_nomask_env; } + GLIBC_2.25 { + __fe_dfl_mode; + } } libc { diff --git a/sysdeps/powerpc/bits/fenv.h b/sysdeps/powerpc/bits/fenv.h index d2a6d34a99..8d2bf3d163 100644 --- a/sysdeps/powerpc/bits/fenv.h +++ b/sysdeps/powerpc/bits/fenv.h @@ -169,3 +169,12 @@ extern const fenv_t __fe_nonieee_env; # define FE_MASK_ENV FE_DFL_ENV #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef double femode_t; + +/* Default floating-point control modes. */ +extern const femode_t __fe_dfl_mode; +# define FE_DFL_MODE (&__fe_dfl_mode) +#endif diff --git a/sysdeps/powerpc/fpu/fenv_const.c b/sysdeps/powerpc/fpu/fenv_const.c index b061daf578..93a4375430 100644 --- a/sysdeps/powerpc/fpu/fenv_const.c +++ b/sysdeps/powerpc/fpu/fenv_const.c @@ -23,6 +23,10 @@ const unsigned long long __fe_dfl_env __attribute__ ((aligned (8))) = 0xfff8000000000000ULL; +/* The same representation is used for femode_t. */ +extern const unsigned long long __fe_dfl_mode + __attribute__ ((aligned (8), alias ("__fe_dfl_env"))); + /* Floating-point environment where none of the exceptions are masked. */ const unsigned long long __fe_enabled_env __attribute__ ((aligned (8))) = 0xfff80000000000f8ULL; diff --git a/sysdeps/powerpc/nofpu/fenv_const.c b/sysdeps/powerpc/nofpu/fenv_const.c index ebf5c68fc5..ce1da3c197 100644 --- a/sysdeps/powerpc/nofpu/fenv_const.c +++ b/sysdeps/powerpc/nofpu/fenv_const.c @@ -25,6 +25,10 @@ const unsigned long long __fe_dfl_env __attribute__ ((aligned (8))) = 0x000000003e000000ULL; +/* The same representation is used for femode_t. */ +extern const unsigned long long __fe_dfl_mode + __attribute__ ((aligned (8), alias ("__fe_dfl_env"))); + /* Floating-point environment where none of the exceptions are masked. */ const unsigned long long __fe_enabled_env __attribute__ ((aligned (8))) = 0x0000000000000000ULL; diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c b/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c index 11e24ca182..eab47c8c0f 100644 --- a/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c @@ -28,6 +28,10 @@ const unsigned long long __fe_dfl_env __attribute__ ((aligned (8))) = 0x3cULL; +/* The same representation is used for femode_t. */ +extern const unsigned long long __fe_dfl_mode + __attribute__ ((aligned (8), alias ("__fe_dfl_env"))); + /* Floating-point environment where none of the exceptions are masked. */ const unsigned long long __fe_enabled_env __attribute__ ((aligned (8))) = (((unsigned long long) (PR_FP_EXC_DIV diff --git a/sysdeps/s390/fpu/bits/fenv.h b/sysdeps/s390/fpu/bits/fenv.h index 6de74b9939..d33f5d921d 100644 --- a/sysdeps/s390/fpu/bits/fenv.h +++ b/sysdeps/s390/fpu/bits/fenv.h @@ -90,3 +90,11 @@ typedef struct /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/sh/bits/fenv.h b/sysdeps/sh/bits/fenv.h index 254c50fb97..200b53899b 100644 --- a/sysdeps/sh/bits/fenv.h +++ b/sysdeps/sh/bits/fenv.h @@ -74,3 +74,11 @@ fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1) + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/sparc/fpu/bits/fenv.h b/sysdeps/sparc/fpu/bits/fenv.h index 29328f714f..37c82ff5eb 100644 --- a/sysdeps/sparc/fpu/bits/fenv.h +++ b/sysdeps/sparc/fpu/bits/fenv.h @@ -91,3 +91,11 @@ typedef unsigned long int fenv_t; # define __fenv_stfsr(X) __asm__ __volatile__ ("st %%fsr,%0" : "=m" (X)) # define __fenv_ldfsr(X) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (X)) #endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned long int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/tile/bits/fenv.h b/sysdeps/tile/bits/fenv.h index a87a39fc28..eee9e011cc 100644 --- a/sysdeps/tile/bits/fenv.h +++ b/sysdeps/tile/bits/fenv.h @@ -43,3 +43,11 @@ typedef unsigned int fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1l) + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist index 1f475cd5c1..aee63a105c 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist @@ -411,5 +411,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist index 11b76e9a10..339b896ac7 100644 --- a/sysdeps/unix/sysv/linux/alpha/libm.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist @@ -421,7 +421,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.3.4 GLIBC_2.3.4 A GLIBC_2.3.4 __c1_cabsf F diff --git a/sysdeps/unix/sysv/linux/arm/libm.abilist b/sysdeps/unix/sysv/linux/arm/libm.abilist index 1fc1804bd5..f7b824413b 100644 --- a/sysdeps/unix/sysv/linux/arm/libm.abilist +++ b/sysdeps/unix/sysv/linux/arm/libm.abilist @@ -69,7 +69,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 _LIB_VERSION D 0x4 diff --git a/sysdeps/unix/sysv/linux/hppa/libm.abilist b/sysdeps/unix/sysv/linux/hppa/libm.abilist index ed734881dd..576b514a53 100644 --- a/sysdeps/unix/sysv/linux/hppa/libm.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist @@ -381,7 +381,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 exp2l F diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist index 3a6dcaf064..63b8da9985 100644 --- a/sysdeps/unix/sysv/linux/i386/libm.abilist +++ b/sysdeps/unix/sysv/linux/i386/libm.abilist @@ -423,6 +423,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/ia64/libm.abilist b/sysdeps/unix/sysv/linux/ia64/libm.abilist index ec9916b52e..611a84ff57 100644 --- a/sysdeps/unix/sysv/linux/ia64/libm.abilist +++ b/sysdeps/unix/sysv/linux/ia64/libm.abilist @@ -352,6 +352,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist index 1fc1804bd5..f7b824413b 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist @@ -69,7 +69,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 _LIB_VERSION D 0x4 diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist index 32931f1677..77f9c7bed7 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist @@ -421,6 +421,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/microblaze/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/libm.abilist index cab693a4e4..c59437fe73 100644 --- a/sysdeps/unix/sysv/linux/microblaze/libm.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/libm.abilist @@ -380,5 +380,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist index 20a80ccbf2..31d6f9eb70 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist @@ -382,7 +382,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 exp2l F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist index 02379f78bf..83e031125b 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist @@ -413,6 +413,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist index b4b377ba19..151574d670 100644 --- a/sysdeps/unix/sysv/linux/nios2/libm.abilist +++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist @@ -380,5 +380,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist index 7eea14aded..456f47e912 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist @@ -422,7 +422,10 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 __fe_dfl_mode D 0x8 +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 __clog10l F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist index 5eb2e9bb40..b2e4a73fd6 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist @@ -421,7 +421,10 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 __fe_dfl_mode D 0x8 +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 __clog10l F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist index 36b8e77d47..907d8b7936 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist @@ -416,5 +416,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 __fe_dfl_mode D 0x8 +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist index 2efd4ebb33..307423dc80 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist @@ -97,7 +97,10 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 __fe_dfl_mode D 0x8 +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 _LIB_VERSION D 0x4 diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist index 62f75baa36..377cea952a 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist @@ -411,7 +411,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 __clog10l F diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist index c41344a9ff..dafbff15a6 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist @@ -409,7 +409,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 __clog10l F diff --git a/sysdeps/unix/sysv/linux/sh/libm.abilist b/sysdeps/unix/sysv/linux/sh/libm.abilist index 3baecfb400..a38baceb8f 100644 --- a/sysdeps/unix/sysv/linux/sh/libm.abilist +++ b/sysdeps/unix/sysv/linux/sh/libm.abilist @@ -381,7 +381,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 exp2l F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist index dd5390c313..27166beb55 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist @@ -414,7 +414,9 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 __clog10l F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist index 394c29b9b5..46f7973465 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist @@ -412,6 +412,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist index d66c886ca5..ec6f0b3600 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist @@ -381,5 +381,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist index d66c886ca5..ec6f0b3600 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist @@ -381,5 +381,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist index d66c886ca5..ec6f0b3600 100644 --- a/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist @@ -381,5 +381,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist index dd79dc4626..65e5baed84 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist @@ -412,6 +412,8 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F GLIBC_2.4 GLIBC_2.4 A diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist index 45abb4fa71..ff520cb084 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist @@ -411,5 +411,7 @@ GLIBC_2.24 nextup F GLIBC_2.24 nextupf F GLIBC_2.24 nextupl F GLIBC_2.25 GLIBC_2.25 A +GLIBC_2.25 fegetmode F GLIBC_2.25 fesetexcept F +GLIBC_2.25 fesetmode F GLIBC_2.25 fetestexceptflag F diff --git a/sysdeps/x86/fpu/bits/fenv.h b/sysdeps/x86/fpu/bits/fenv.h index 8c8503bd7e..688407281c 100644 --- a/sysdeps/x86/fpu/bits/fenv.h +++ b/sysdeps/x86/fpu/bits/fenv.h @@ -101,6 +101,20 @@ fenv_t; # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef struct + { + unsigned short int __control_word; + unsigned short int __glibc_reserved; + unsigned int __mxcsr; + } +femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif + #ifdef __USE_EXTERN_INLINES __BEGIN_DECLS diff --git a/sysdeps/x86_64/fpu/fegetmode.c b/sysdeps/x86_64/fpu/fegetmode.c new file mode 100644 index 0000000000..f4a179d36b --- /dev/null +++ b/sysdeps/x86_64/fpu/fegetmode.c @@ -0,0 +1,28 @@ +/* Store current floating-point control modes. x86_64 version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <fpu_control.h> + +int +fegetmode (femode_t *modep) +{ + _FPU_GETCW (modep->__control_word); + __asm__ ("stmxcsr %0" : "=m" (modep->__mxcsr)); + return 0; +} diff --git a/sysdeps/x86_64/fpu/fesetmode.c b/sysdeps/x86_64/fpu/fesetmode.c new file mode 100644 index 0000000000..19173f91cb --- /dev/null +++ b/sysdeps/x86_64/fpu/fesetmode.c @@ -0,0 +1,50 @@ +/* Install given floating-point control modes. x86_64 version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <fpu_control.h> + +/* All exceptions, including the x86-specific "denormal operand" + exception. */ +#define FE_ALL_EXCEPT_X86 (FE_ALL_EXCEPT | __FE_DENORM) + +int +fesetmode (const femode_t *modep) +{ + fpu_control_t cw; + unsigned int mxcsr; + __asm__ ("stmxcsr %0" : "=m" (mxcsr)); + /* Preserve SSE exception flags but restore other state in + MXCSR. */ + mxcsr &= FE_ALL_EXCEPT_X86; + if (modep == FE_DFL_MODE) + { + cw = _FPU_DEFAULT; + /* Default MXCSR state has all bits zero except for those + masking exceptions. */ + mxcsr |= FE_ALL_EXCEPT_X86 << 7; + } + else + { + cw = modep->__control_word; + mxcsr |= modep->__mxcsr & ~FE_ALL_EXCEPT_X86; + } + _FPU_SETCW (cw); + __asm__ ("ldmxcsr %0" : : "m" (mxcsr)); + return 0; +} |