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glibc/sysdeps/ieee754/ldbl-opt
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Joseph Myers 90f0ac10a7 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.
 		2021-09-28 23:31:35 +00:00
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bits Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
Versions
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configure
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configure.ac configure: Replaced obsolete AC_TRY_COMPILE 2021-06-04 10:16:00 -03:00
libm-alias-double.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-alias-ldouble.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math_ldbl_opt.c
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math_ldbl_opt.h
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nldbl-acos.c
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nldbl-acosh.c
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nldbl-asin.c
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nldbl-asinh.c
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nldbl-asprintf.c
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nldbl-asprintf_chk.c
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nldbl-atan.c
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nldbl-atan2.c
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nldbl-atanh.c
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nldbl-cabs.c
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nldbl-cacos.c
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nldbl-cacosh.c
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nldbl-canonicalize.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-carg.c
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nldbl-casin.c
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nldbl-casinh.c
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nldbl-catan.c
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nldbl-catanh.c
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nldbl-cbrt.c
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nldbl-ccos.c
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nldbl-ccosh.c
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nldbl-ceil.c
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nldbl-cexp.c
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nldbl-cimag.c
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nldbl-clog.c
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nldbl-clog10.c
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nldbl-compat.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nldbl-compat.h Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nldbl-conj.c
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nldbl-copysign.c
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nldbl-cos.c
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nldbl-cosh.c
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nldbl-cpow.c
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nldbl-cproj.c
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nldbl-creal.c
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nldbl-csin.c
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nldbl-csinh.c
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nldbl-csqrt.c
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nldbl-ctan.c
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nldbl-ctanh.c
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nldbl-dadd.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-ddiv.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-dfma.c Add narrowing fma functions 2021-09-22 21:25:31 +00:00
nldbl-dmul.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-dprintf.c
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nldbl-dprintf_chk.c
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nldbl-dsqrt.c Add narrowing square root functions 2021-09-10 20:56:22 +00:00
nldbl-dsub.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-erf.c
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nldbl-erfc.c
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nldbl-exp.c
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nldbl-exp2.c
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nldbl-exp10.c
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nldbl-expm1.c
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nldbl-fabs.c
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nldbl-fadd.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fdim.c
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nldbl-fdiv.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-ffma.c Add narrowing fma functions 2021-09-22 21:25:31 +00:00
nldbl-finite.c
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nldbl-floor.c
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nldbl-fma.c
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nldbl-fmax.c
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nldbl-fmaximum.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fmaximum_mag.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fmaximum_mag_num.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fmaximum_num.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fmaxmag.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fmin.c
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nldbl-fminimum.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fminimum_mag.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fminimum_mag_num.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fminimum_num.c Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
nldbl-fminmag.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fmod.c
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nldbl-fmul.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fprintf.c
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nldbl-fprintf_chk.c
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nldbl-frexp.c
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nldbl-fromfp.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fromfpx.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fscanf.c
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nldbl-fsqrt.c Add narrowing square root functions 2021-09-10 20:56:22 +00:00
nldbl-fsub.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-fwprintf.c
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nldbl-fwprintf_chk.c
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nldbl-fwscanf.c
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nldbl-gamma.c
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nldbl-getpayload.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-hypot.c
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nldbl-ilogb.c
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nldbl-iovfscanf.c
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nldbl-isinf.c
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nldbl-isnan.c
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nldbl-isoc99_fscanf.c
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nldbl-isoc99_fwscanf.c
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nldbl-isoc99_scanf.c
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nldbl-isoc99_sscanf.c
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nldbl-isoc99_swscanf.c
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nldbl-isoc99_vfscanf.c
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nldbl-isoc99_vfwscanf.c
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nldbl-isoc99_vscanf.c
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nldbl-isoc99_vsscanf.c
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nldbl-isoc99_vswscanf.c
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nldbl-isoc99_vwscanf.c
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nldbl-isoc99_wscanf.c
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nldbl-j0.c
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nldbl-j1.c
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nldbl-jn.c
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nldbl-ldexp.c
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nldbl-lgamma.c
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nldbl-lgamma_r.c
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nldbl-llogb.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-llrint.c
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nldbl-llround.c
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nldbl-log.c
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nldbl-log1p.c
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nldbl-log2.c
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nldbl-log10.c
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nldbl-logb.c
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nldbl-lrint.c
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nldbl-lround.c
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nldbl-modf.c
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nldbl-nan.c
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nldbl-nearbyint.c
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nldbl-nextafter.c
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nldbl-nextdown.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-nexttoward.c
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nldbl-nexttowardf.c
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nldbl-nextup.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-obstack_printf.c
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nldbl-obstack_printf_chk.c
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nldbl-obstack_vprintf.c
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nldbl-obstack_vprintf_chk.c
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nldbl-pow.c
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nldbl-printf.c
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nldbl-printf_chk.c
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nldbl-printf_fp.c
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nldbl-printf_size.c
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nldbl-qecvt.c
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nldbl-qecvt_r.c
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nldbl-qfcvt.c
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nldbl-qfcvt_r.c
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nldbl-qgcvt.c
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nldbl-remainder.c
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nldbl-remquo.c
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nldbl-rint.c
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nldbl-round.c
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nldbl-roundeven.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-scalb.c
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nldbl-scalbln.c
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nldbl-scalbn.c
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nldbl-scanf.c
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nldbl-setpayload.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-setpayloadsig.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-signbit.c
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nldbl-significand.c
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nldbl-sin.c
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nldbl-sincos.c
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nldbl-sinh.c
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nldbl-snprintf.c
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nldbl-snprintf_chk.c
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nldbl-sprintf.c
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nldbl-sprintf_chk.c
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nldbl-sqrt.c
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nldbl-sscanf.c
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nldbl-strfmon.c
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nldbl-strfmon_l.c
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nldbl-strfroml.c
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nldbl-strtold.c
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nldbl-strtold_l.c
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nldbl-strtoldint.c
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nldbl-swprintf.c
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nldbl-swprintf_chk.c
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nldbl-swscanf.c
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nldbl-syslog.c
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nldbl-syslog_chk.c
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nldbl-tan.c
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nldbl-tanh.c
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nldbl-tgamma.c
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nldbl-totalorder.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-totalordermag.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-trunc.c
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nldbl-ufromfp.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-ufromfpx.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nldbl-vasprintf.c
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nldbl-vasprintf_chk.c
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nldbl-vdprintf.c
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nldbl-vdprintf_chk.c
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nldbl-vfprintf.c
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nldbl-vfprintf_chk.c
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nldbl-vfscanf.c
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nldbl-vfwprintf.c
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nldbl-vfwprintf_chk.c
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nldbl-vfwscanf.c
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nldbl-vprintf.c
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nldbl-vprintf_chk.c
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nldbl-vscanf.c
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nldbl-vsnprintf.c
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nldbl-vsnprintf_chk.c
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nldbl-vsprintf.c
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nldbl-vsprintf_chk.c
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nldbl-vsscanf.c
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nldbl-vswprintf.c
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nldbl-vswprintf_chk.c
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nldbl-vswscanf.c
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nldbl-vsyslog.c
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nldbl-vsyslog_chk.c
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nldbl-vwprintf.c
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nldbl-vwprintf_chk.c
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nldbl-vwscanf.c
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nldbl-wcstold.c
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nldbl-wcstold_l.c
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nldbl-wcstoldint.c
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nldbl-wprintf.c
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nldbl-wprintf_chk.c
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nldbl-wscanf.c
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nldbl-y0.c
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nldbl-y1.c
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nldbl-yn.c
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s_clog10.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
s_clog10l.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
s_copysign.c
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s_finite.c
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s_frexp.c
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s_isinf.c
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s_isnan.c
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s_ldexp.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
s_ldexpl.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
s_modf.c
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s_nextafter.c
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s_nexttowardfd.c
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test-narrow-macros-ldbl-64.c
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test-nldbl-redirect.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
test-redirection-ldbl-64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
w_exp10_compat.c
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w_exp10l_compat.c
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w_lgamma_compat.c
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w_lgamma_compatl.c
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w_remainder_compat.c
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w_remainderl_compat.c
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w_scalb_compat.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
w_scalbl_compat.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00