C23 Support

Implementation Status

(It’s helpful to review ‘Annex B (Informative) Library Summary’ for these.)

Additions:

• fenv.h

  • fesetexcept ✅

  • fetestexceptflag ✅

  • fegetmode

  • fesetmode

• math.h

  • acospi*

  • asinpi*

  • atanpi*

  • atan2pi*

  • cospi*

  • sinpi*

  • tanpi*

  • exp10*

  • exp10m1*

  • exp2m1*

  • log10p1*

  • logp1

  • log2p1*

  • rsqrt*

  • __STDC_IEC_60559_DFP__ functions (_Decimal32, _Decimal64, _Decimal128)

  • compoundn*

  • totalorder*

  • totalordermag*

  • getpayload*

  • setpayload*

  • iscannonical

  • issignaling

  • issubnormal

  • iszero

  • llogb*

  • pown*

  • powr*

  • rootn*

  • roundeven* ✅

  • fromfp*

  • ufromfp*

  • fromfpx*

  • nextup*

  • nextdown*

  • canonicalize*

  • fmaximum*

  • fminimum*

  • fmaximum_mag*

  • fminimum_mag*

  • fmaximum_mag_num*

  • fminimum_mag_num*

  • fadd*

  • fsub*

  • fmul*

  • fdiv*

  • ffma*

  • dfmal

  • fsqrt*

  • dsqrtl

• stdbit.h (New header) ✅

• stdckdint.h (New header) ✅

• stddef.h

  • unreachable

• stdlib.h

  • strfromd

  • strfromf

  • strfroml

  • free_sized

  • free_aligned_sized

  • memalignment

• string.h

  • memset_explicit ✅

  • memccpy

  • strdup

  • strndup

• tgmath.h

  • acospi

  • asinpi

  • atan2pi

  • atanpi

  • compoundn

  • cospi

  • erf

  • exp10m1

  • exp10

  • exp2m1

  • fmaximum

  • fmaximum_mag

  • fmaximum_num

  • fmaximum_mag_num

  • fminimum

  • fminimum_mag

  • fminimum_num

  • fminimum_mag_num

  • fromfpx

  • fromfp

  • llogb

  • log10p1

  • log2p1

  • logp1

  • nextdown

  • nextup

  • pown

  • powr

  • rootn

  • roundeven

  • rsqrt

  • scalbn

  • sinpi

  • tanpi

  • ufromfpx

  • ufromfp

  • fadd

  • dadd

  • fsub

  • dsub

  • fmul

  • dmul

  • fdiv

  • ddiv

  • ffma

  • dfma

  • fsqrt

  • dsqrt

• time.h

  • gmtime_r

  • localtime_r

  • timegm

  • timespec_getres

  • strftime conversion specifiers

    • 0b

    • 0B

• uchar.h

  • mbrtoc8

  • c8rtomb

  • char*_t