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| author | Joseph Myers <joseph@codesourcery.com> | 2021-09-28 23:31:35 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2021-09-28 23:31:35 +0000 |
| commit | 90f0ac10a74b2d43b5a65aab4be40565e359be43 (patch) | |
| tree | ab0e73d7c60a7255fa5e7c9cbe58e80c3eb8d9cd /sysdeps/mach/hurd | |
| parent | 5bf07e1b3a74232bfb8332275110be1a5da50f83 (diff) | |
| download | glibc-90f0ac10a74b2d43b5a65aab4be40565e359be43.tar.gz glibc-90f0ac10a74b2d43b5a65aab4be40565e359be43.tar.xz glibc-90f0ac10a74b2d43b5a65aab4be40565e359be43.zip | |
Add fmaximum, fminimum functions
C2X adds new <math.h> functions for floating-point maximum and minimum, corresponding to the new operations that were added in IEEE 754-2019 because of concerns about the old operations not being associative in the presence of signaling NaNs. fmaximum and fminimum handle NaNs like most <math.h> functions (any NaN argument means the result is a quiet NaN). fmaximum_num and fminimum_num handle both quiet and signaling NaNs the way fmax and fmin handle quiet NaNs (if one argument is a number and the other is a NaN, return the number), but still raise "invalid" for a signaling NaN argument, making them exceptions to the normal rule that a function with a floating-point result raising "invalid" also returns a quiet NaN. fmaximum_mag, fminimum_mag, fmaximum_mag_num and fminimum_mag_num are corresponding functions returning the argument with greatest or least absolute value. All these functions also treat +0 as greater than -0. There are also corresponding <tgmath.h> type-generic macros. Add these functions to glibc. The implementations use type-generic templates based on those for fmax, fmin, fmaxmag and fminmag, and test inputs are based on those for those functions with appropriate adjustments to the expected results. The RISC-V maintainers might wish to add optimized versions of fmaximum_num and fminimum_num (for float and double), since RISC-V (F extension version 2.2 and later) provides instructions corresponding to those functions - though it might be at least as useful to add architecture-independent built-in functions to GCC and teach the RISC-V back end to expand those functions inline, which is what you generally want for functions that can be implemented with a single instruction. Tested for x86_64 and x86, and with build-many-glibcs.py.
Diffstat (limited to 'sysdeps/mach/hurd')
| -rw-r--r-- | sysdeps/mach/hurd/i386/libm.abilist | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/i386/libm.abilist b/sysdeps/mach/hurd/i386/libm.abilist index 51e1bc00fd..abf91bd142 100644 --- a/sysdeps/mach/hurd/i386/libm.abilist +++ b/sysdeps/mach/hurd/i386/libm.abilist @@ -1113,5 +1113,69 @@ GLIBC_2.35 f64xfmaf128 F GLIBC_2.35 f64xsqrtf128 F GLIBC_2.35 ffma F GLIBC_2.35 ffmal F +GLIBC_2.35 fmaximum F +GLIBC_2.35 fmaximum_mag F +GLIBC_2.35 fmaximum_mag_num F +GLIBC_2.35 fmaximum_mag_numf F +GLIBC_2.35 fmaximum_mag_numf128 F +GLIBC_2.35 fmaximum_mag_numf32 F +GLIBC_2.35 fmaximum_mag_numf32x F +GLIBC_2.35 fmaximum_mag_numf64 F +GLIBC_2.35 fmaximum_mag_numf64x F +GLIBC_2.35 fmaximum_mag_numl F +GLIBC_2.35 fmaximum_magf F +GLIBC_2.35 fmaximum_magf128 F +GLIBC_2.35 fmaximum_magf32 F +GLIBC_2.35 fmaximum_magf32x F +GLIBC_2.35 fmaximum_magf64 F +GLIBC_2.35 fmaximum_magf64x F +GLIBC_2.35 fmaximum_magl F +GLIBC_2.35 fmaximum_num F +GLIBC_2.35 fmaximum_numf F +GLIBC_2.35 fmaximum_numf128 F +GLIBC_2.35 fmaximum_numf32 F +GLIBC_2.35 fmaximum_numf32x F +GLIBC_2.35 fmaximum_numf64 F +GLIBC_2.35 fmaximum_numf64x F +GLIBC_2.35 fmaximum_numl F +GLIBC_2.35 fmaximumf F +GLIBC_2.35 fmaximumf128 F +GLIBC_2.35 fmaximumf32 F +GLIBC_2.35 fmaximumf32x F +GLIBC_2.35 fmaximumf64 F +GLIBC_2.35 fmaximumf64x F +GLIBC_2.35 fmaximuml F +GLIBC_2.35 fminimum F +GLIBC_2.35 fminimum_mag F +GLIBC_2.35 fminimum_mag_num F +GLIBC_2.35 fminimum_mag_numf F +GLIBC_2.35 fminimum_mag_numf128 F +GLIBC_2.35 fminimum_mag_numf32 F +GLIBC_2.35 fminimum_mag_numf32x F +GLIBC_2.35 fminimum_mag_numf64 F +GLIBC_2.35 fminimum_mag_numf64x F +GLIBC_2.35 fminimum_mag_numl F +GLIBC_2.35 fminimum_magf F +GLIBC_2.35 fminimum_magf128 F +GLIBC_2.35 fminimum_magf32 F +GLIBC_2.35 fminimum_magf32x F +GLIBC_2.35 fminimum_magf64 F +GLIBC_2.35 fminimum_magf64x F +GLIBC_2.35 fminimum_magl F +GLIBC_2.35 fminimum_num F +GLIBC_2.35 fminimum_numf F +GLIBC_2.35 fminimum_numf128 F +GLIBC_2.35 fminimum_numf32 F +GLIBC_2.35 fminimum_numf32x F +GLIBC_2.35 fminimum_numf64 F +GLIBC_2.35 fminimum_numf64x F +GLIBC_2.35 fminimum_numl F +GLIBC_2.35 fminimumf F +GLIBC_2.35 fminimumf128 F +GLIBC_2.35 fminimumf32 F +GLIBC_2.35 fminimumf32x F +GLIBC_2.35 fminimumf64 F +GLIBC_2.35 fminimumf64x F +GLIBC_2.35 fminimuml F GLIBC_2.35 fsqrt F GLIBC_2.35 fsqrtl F |