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https://sourceware.org/git/glibc.git
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90f0ac10a7
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.
224 lines
9.2 KiB
Makefile
224 lines
9.2 KiB
Makefile
# The`long double' type is a distinct type we support if
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# -mlong-double-128 option is used (or when it becomes a default
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# when -mlong-double-64 is not used).
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long-double-fcts = yes
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ifeq (,$(filter -mlong-double-128,$(sysdep-CFLAGS)))
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sysdep-CFLAGS += -mlong-double-128
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endif
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ifeq ($(subdir),math)
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libm-routines += s_nexttowardfd
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routines += nldbl-compat
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extra-libs += libnldbl
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libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \
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obstack_printf obstack_vprintf printf scanf snprintf \
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sprintf sscanf swprintf swscanf vasprintf vdprintf vfprintf \
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vfscanf vfwprintf vfwscanf vprintf vscanf vsnprintf \
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vsprintf vsscanf vswprintf vswscanf vwprintf vwscanf \
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wprintf wscanf printf_fp printf_size \
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fprintf_chk fwprintf_chk printf_chk snprintf_chk sprintf_chk \
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swprintf_chk vfprintf_chk vfwprintf_chk vprintf_chk \
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vsnprintf_chk vsprintf_chk vswprintf_chk vwprintf_chk \
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wprintf_chk asprintf_chk vasprintf_chk dprintf_chk \
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vdprintf_chk obstack_printf_chk obstack_vprintf_chk \
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syslog syslog_chk vsyslog vsyslog_chk \
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strfmon strfmon_l \
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strfroml \
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strtold strtold_l strtoldint wcstold wcstold_l wcstoldint \
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qecvt qfcvt qgcvt qecvt_r qfcvt_r \
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isinf isnan finite signbit scalb log2 lgamma_r ceil \
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significand acos asin atan atan2 cos sin tan cosh sinh \
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tanh acosh asinh atanh exp log log10 exp10 expm1 \
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log1p logb exp2 sqrt cbrt fabs floor j0 j1 y0 y1 erf erfc \
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lgamma tgamma gamma rint nearbyint round trunc \
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copysign fdim fmax fmin nextafter pow hypot fmod \
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remainder ldexp scalbn frexp modf scalbln fma nan sincos \
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jn yn ilogb remquo lrint lround llrint llround nexttowardf \
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nexttoward conj cacos cacosh casin catan catanh ccos ccosh \
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casinh cexp clog cproj csin csinh csqrt ctan ctanh cpow \
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cabs carg cimag creal clog10 \
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isoc99_scanf isoc99_fscanf isoc99_sscanf \
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isoc99_vscanf isoc99_vfscanf isoc99_vsscanf \
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isoc99_wscanf isoc99_fwscanf isoc99_swscanf \
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isoc99_vwscanf isoc99_vfwscanf isoc99_vswscanf \
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nextup nextdown totalorder totalordermag getpayload \
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canonicalize setpayload setpayloadsig llogb fmaxmag fminmag \
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roundeven fromfp ufromfp fromfpx ufromfpx fadd dadd \
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fdiv ddiv ffma dfma fmul dmul fsqrt dsqrt fsub dsub \
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fmaximum fmaximum_mag fmaximum_num fmaximum_mag_num \
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fminimum fminimum_mag fminimum_num fminimum_mag_num
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libnldbl-routines = $(libnldbl-calls:%=nldbl-%)
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libnldbl-inhibit-o = $(object-suffixes)
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libnldbl-static-only-routines = $(libnldbl-routines)
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extra-objs += $(addsuffix .oS, $(libnldbl-routines))
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CFLAGS-nldbl-acos.c = -fno-builtin-acosl
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CFLAGS-nldbl-acosh.c = -fno-builtin-acoshl
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CFLAGS-nldbl-asin.c = -fno-builtin-asinl
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CFLAGS-nldbl-asinh.c = -fno-builtin-asinhl
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CFLAGS-nldbl-atan.c = -fno-builtin-atanl
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CFLAGS-nldbl-atan2.c = -fno-builtin-atan2l
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CFLAGS-nldbl-atanh.c = -fno-builtin-atanhl
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CFLAGS-nldbl-cabs.c = -fno-builtin-cabsl
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CFLAGS-nldbl-cacos.c = -fno-builtin-cacosl
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CFLAGS-nldbl-cacosh.c = -fno-builtin-cacoshl
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CFLAGS-nldbl-canonicalize.c = -fno-builtin-canonicalizel
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CFLAGS-nldbl-carg.c = -fno-builtin-cargl
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CFLAGS-nldbl-casin.c = -fno-builtin-casinl
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CFLAGS-nldbl-casinh.c = -fno-builtin-casinhl
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CFLAGS-nldbl-catan.c = -fno-builtin-catanl
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CFLAGS-nldbl-catanh.c = -fno-builtin-catanhl
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CFLAGS-nldbl-cbrt.c = -fno-builtin-cbrtl
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CFLAGS-nldbl-ccos.c = -fno-builtin-ccosl
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CFLAGS-nldbl-ccosh.c = -fno-builtin-ccoshl
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CFLAGS-nldbl-ceil.c = -fno-builtin-ceill
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CFLAGS-nldbl-cexp.c = -fno-builtin-cexpl
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CFLAGS-nldbl-cimag.c = -fno-builtin-cimagl
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CFLAGS-nldbl-clog.c = -fno-builtin-clogl
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CFLAGS-nldbl-clog10.c = -fno-builtin-clog10l
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CFLAGS-nldbl-conj.c = -fno-builtin-conjl
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CFLAGS-nldbl-copysign.c = -fno-builtin-copysignl
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CFLAGS-nldbl-cos.c = -fno-builtin-cosl
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CFLAGS-nldbl-cosh.c = -fno-builtin-coshl
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CFLAGS-nldbl-cpow.c = -fno-builtin-cpowl
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CFLAGS-nldbl-cproj.c = -fno-builtin-cprojl
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CFLAGS-nldbl-creal.c = -fno-builtin-creall
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CFLAGS-nldbl-csin.c = -fno-builtin-csinl
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CFLAGS-nldbl-csinh.c = -fno-builtin-csinhl
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CFLAGS-nldbl-csqrt.c = -fno-builtin-csqrtl
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CFLAGS-nldbl-ctan.c = -fno-builtin-ctanl
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CFLAGS-nldbl-ctanh.c = -fno-builtin-ctanhl
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CFLAGS-nldbl-dadd.c = -fno-builtin-daddl
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CFLAGS-nldbl-ddiv.c = -fno-builtin-ddivl
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CFLAGS-nldbl-dfma.c = -fno-builtin-dfmal
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CFLAGS-nldbl-dmul.c = -fno-builtin-dmull
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CFLAGS-nldbl-dsqrt.c = -fno-builtin-dsqrtl
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CFLAGS-nldbl-dsub.c = -fno-builtin-dsubl
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CFLAGS-nldbl-erf.c = -fno-builtin-erfl
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CFLAGS-nldbl-erfc.c = -fno-builtin-erfcl
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CFLAGS-nldbl-exp.c = -fno-builtin-expl
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CFLAGS-nldbl-exp10.c = -fno-builtin-exp10l
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CFLAGS-nldbl-exp2.c = -fno-builtin-exp2l
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CFLAGS-nldbl-expm1.c = -fno-builtin-expm1l
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CFLAGS-nldbl-fabs.c = -fno-builtin-fabsl
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CFLAGS-nldbl-fadd.c = -fno-builtin-faddl
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CFLAGS-nldbl-fdim.c = -fno-builtin-fdiml
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CFLAGS-nldbl-fdiv.c = -fno-builtin-fdivl
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CFLAGS-nldbl-ffma.c = -fno-builtin-ffmal
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CFLAGS-nldbl-finite.c = -fno-builtin-finitel
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CFLAGS-nldbl-floor.c = -fno-builtin-floorl
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CFLAGS-nldbl-fma.c = -fno-builtin-fmal
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CFLAGS-nldbl-fmax.c = -fno-builtin-fmaxl
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CFLAGS-nldbl-fmaximum.c += -fno-builtin-fmaximuml
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CFLAGS-nldbl-fmaximum_mag.c += -fno-builtin-fmaximum_magl
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CFLAGS-nldbl-fmaximum_mag_num.c += -fno-builtin-fmaximum_mag_numl
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CFLAGS-nldbl-fmaximum_num.c += -fno-builtin-fmaximum_numl
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CFLAGS-nldbl-fmaxmag.c = -fno-builtin-fmaxmagl
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CFLAGS-nldbl-fmin.c = -fno-builtin-fminl
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CFLAGS-nldbl-fminimum.c += -fno-builtin-fminimuml
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CFLAGS-nldbl-fminimum_mag.c += -fno-builtin-fminimum_magl
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CFLAGS-nldbl-fminimum_mag_num.c += -fno-builtin-fminimum_mag_numl
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CFLAGS-nldbl-fminimum_num.c += -fno-builtin-fminimum_numl
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CFLAGS-nldbl-fminmag.c = -fno-builtin-fminmagl
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CFLAGS-nldbl-fmod.c = -fno-builtin-fmodl
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CFLAGS-nldbl-fmul.c = -fno-builtin-fmull
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CFLAGS-nldbl-frexp.c = -fno-builtin-frexpl
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CFLAGS-nldbl-fromfp.c = -fno-builtin-fromfpl
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CFLAGS-nldbl-fromfpx.c = -fno-builtin-fromfpxl
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CFLAGS-nldbl-fsqrt.c = -fno-builtin-fsqrtl
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CFLAGS-nldbl-fsub.c = -fno-builtin-fsubl
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CFLAGS-nldbl-gamma.c = -fno-builtin-gammal
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CFLAGS-nldbl-getpayload.c = -fno-builtin-getpayloadl
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CFLAGS-nldbl-hypot.c = -fno-builtin-hypotl
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CFLAGS-nldbl-ilogb.c = -fno-builtin-ilogbl
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CFLAGS-nldbl-isinf.c = -fno-builtin-isinfl
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CFLAGS-nldbl-isnan.c = -fno-builtin-isnanl
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CFLAGS-nldbl-j0.c = -fno-builtin-j0l
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CFLAGS-nldbl-j1.c = -fno-builtin-j1l
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CFLAGS-nldbl-jn.c = -fno-builtin-jnl
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CFLAGS-nldbl-ldexp.c = -fno-builtin-ldexpl
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CFLAGS-nldbl-lgamma.c = -fno-builtin-lgammal
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CFLAGS-nldbl-lgamma_r.c = -fno-builtin-lgammal_r
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CFLAGS-nldbl-llogb.c = -fno-builtin-llogbl
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CFLAGS-nldbl-llrint.c = -fno-builtin-llrintl
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CFLAGS-nldbl-llround.c = -fno-builtin-llroundl
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CFLAGS-nldbl-log.c = -fno-builtin-logl
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CFLAGS-nldbl-log10.c = -fno-builtin-log10l
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CFLAGS-nldbl-log1p.c = -fno-builtin-log1pl
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CFLAGS-nldbl-log2.c = -fno-builtin-log2l
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CFLAGS-nldbl-logb.c = -fno-builtin-logbl
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CFLAGS-nldbl-lrint.c = -fno-builtin-lrintl
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CFLAGS-nldbl-lround.c = -fno-builtin-lroundl
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CFLAGS-nldbl-modf.c = -fno-builtin-modfl
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CFLAGS-nldbl-nan.c = -fno-builtin-nanl
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CFLAGS-nldbl-nearbyint.c = -fno-builtin-nearbyintl
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CFLAGS-nldbl-nextafter.c = -fno-builtin-nextafterl
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CFLAGS-nldbl-nextdown.c = -fno-builtin-nextdownl
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CFLAGS-nldbl-nexttoward.c = -fno-builtin-nexttoward -fno-builtin-nexttowardl
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CFLAGS-nldbl-nexttowardf.c = -fno-builtin-nexttowardf
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CFLAGS-nldbl-nextup.c = -fno-builtin-nextupl
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CFLAGS-nldbl-pow.c = -fno-builtin-powl
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CFLAGS-nldbl-remainder.c = -fno-builtin-remainderl -fno-builtin-dreml
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CFLAGS-nldbl-remquo.c = -fno-builtin-remquol
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CFLAGS-nldbl-rint.c = -fno-builtin-rintl
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CFLAGS-nldbl-round.c = -fno-builtin-roundl
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CFLAGS-nldbl-roundeven.c = -fno-builtin-roundevenl
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CFLAGS-nldbl-scalb.c = -fno-builtin-scalbl
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CFLAGS-nldbl-scalbln.c = -fno-builtin-scalblnl
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CFLAGS-nldbl-scalbn.c = -fno-builtin-scalbnl
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CFLAGS-nldbl-setpayload.c = -fno-builtin-setpayloadl
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CFLAGS-nldbl-setpayloadsig.c = -fno-builtin-setpayloadsigl
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CFLAGS-nldbl-significand.c = -fno-builtin-significandl
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CFLAGS-nldbl-sin.c = -fno-builtin-sinl
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CFLAGS-nldbl-sincos.c = -fno-builtin-sincosl
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CFLAGS-nldbl-sinh.c = -fno-builtin-sinhl
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CFLAGS-nldbl-sqrt.c = -fno-builtin-sqrtl
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CFLAGS-nldbl-tan.c = -fno-builtin-tanl
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CFLAGS-nldbl-tanh.c = -fno-builtin-tanhl
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CFLAGS-nldbl-tgamma.c = -fno-builtin-tgammal
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CFLAGS-nldbl-totalorder.c = -fno-builtin-totalorderl
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CFLAGS-nldbl-totalordermag.c = -fno-builtin-totalordermagl
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CFLAGS-nldbl-trunc.c = -fno-builtin-truncl
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CFLAGS-nldbl-ufromfp.c = -fno-builtin-ufromfpl
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CFLAGS-nldbl-ufromfpx.c = -fno-builtin-ufromfpxl
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CFLAGS-nldbl-y0.c = -fno-builtin-y0l
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CFLAGS-nldbl-y1.c = -fno-builtin-y1l
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CFLAGS-nldbl-yn.c = -fno-builtin-ynl
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tests += test-narrow-macros-ldbl-64 test-nldbl-redirect \
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test-redirection-ldbl-64
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CFLAGS-test-narrow-macros-ldbl-64.c += -mlong-double-64
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CFLAGS-test-nldbl-redirect.c += -mlong-double-64
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CFLAGS-test-redirection-ldbl-64.c += -mlong-double-64
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$(objpfx)test-nldbl-redirect: $(objpfx)libnldbl_nonshared.a
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endif
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# Tests for argp.h functions (reusing the relevant tests from argp/)
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ifeq ($(subdir),argp)
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tests-internal += tst-nldbl-argp
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$(objpfx)tst-nldbl-argp.c: tst-ldbl-argp.c
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cp $< $@
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CFLAGS-tst-nldbl-argp.c += -mlong-double-64
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endif
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# Tests for err.h and error.h functions (reusing the relevant tests from
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# misc/).
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ifeq ($(subdir), misc)
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tests-internal += tst-nldbl-warn
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tests-internal += tst-nldbl-error
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$(objpfx)tst-nldbl-warn.c: tst-ldbl-warn.c
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cp $< $@
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$(objpfx)tst-nldbl-error.c: tst-ldbl-error.c
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cp $< $@
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CFLAGS-tst-nldbl-warn.c += -mlong-double-64
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CFLAGS-tst-nldbl-error.c += -mlong-double-64
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endif
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