[gsoc2024][libc][math][c23] Implement _Float16 basic operations

[overmighty]

This issue is part of the following Google Summer of Code 2024 project: https://summerofcode.withgoogle.com/programs/2024/projects/1vPVUj93.

• ceilf16: [libc][math][c23] Add {ceil,floor,round,roundeven,trunc}f16 C23 math functions #94001
• canonicalizef16: [libc][math][c23] Add canonicalizef16 C23 math function #94341
• copysignf16: [libc][math][c23] Add copysignf16 C23 math function #94351
• fabsf16: [libc][math][c23] Add fabsf16 C23 math function #93567
• fdimf16: [libc][math][c23] Add fdimf16 C23 math function #94354
• floorf16: [libc][math][c23] Add {ceil,floor,round,roundeven,trunc}f16 C23 math functions #94001
• fmaxf16: [libc][math][c23] Implement fmaxf16 and fminf16 function #94131
• fmaximumf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fmaximum_magf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fmaximum_mag_numf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fmaximum_numf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fminf16: [libc][math][c23] Implement fmaxf16 and fminf16 function #94131
• fminimumf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fminimum_magf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fminimum_mag_numf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fminimum_numf16: [libc][math][c23] Add {fmaximum,fminimum}{,_mag,_mag_num,_num} C23 math functions #94510
• fmodf16: [libc][math][c23] Add fmodf16 C23 math function #94629
• frexpf16: [libc][math][c23] Add {frexp,ilogb,llogb,logb,modf}f16 C23 math functions #94758
• fromfpf16: [libc][math][c23] Add {fromfp,fromfpx,ufromfp,ufromfpx}f16 C23 math functions #94254
• fromfpxf16: [libc][math][c23] Add {fromfp,fromfpx,ufromfp,ufromfpx}f16 C23 math functions #94254
• ilogbf16: [libc][math][c23] Add {frexp,ilogb,llogb,logb,modf}f16 C23 math functions #94758
• ldexpf16: [libc][math][c23] Add {ldexp,scalbn,scalbln}f16 C23 math functions #94797
• llogbf16: [libc][math][c23] Add {frexp,ilogb,llogb,logb,modf}f16 C23 math functions #94758
• llrintf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• llroundf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• logbf16: [libc][math][c23] Add {frexp,ilogb,llogb,logb,modf}f16 C23 math functions #94758
• lrintf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• lroundf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• modff16: [libc][math][c23] Add {frexp,ilogb,llogb,logb,modf}f16 C23 math functions #94758
• nanf16: [libc][math][c23] Add nanf16 C23 math function #94767
• nearbyintf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• nextafterf16: [libc][math][c23] Add {nextafter,nexttoward,nextup,nextdown}f16 C23 math functions #94535
• nextdownf16: [libc][math][c23] Add {nextafter,nexttoward,nextup,nextdown}f16 C23 math functions #94535
• nexttowardf16: [libc][math][c23] Add {nextafter,nexttoward,nextup,nextdown}f16 C23 math functions #94535
• nextupf16: [libc][math][c23] Add {nextafter,nexttoward,nextup,nextdown}f16 C23 math functions #94535
• remainderf16: [libc][math][c23] Add {remainder,remquo}f16 C23 math functions #94773
• remquof16: [libc][math][c23] Add {remainder,remquo}f16 C23 math functions #94773
• rintf16: [libc][math][c23] Add {nearbyint,rint,lrint,llrint,lround,llround}f16 C23 math functions #94218
• roundf16: [libc][math][c23] Add {ceil,floor,round,roundeven,trunc}f16 C23 math functions #94001
• roundevenf16: [libc][math][c23] Add {ceil,floor,round,roundeven,trunc}f16 C23 math functions #94001
• scalbnf16: [libc][math][c23] Add {ldexp,scalbn,scalbln}f16 C23 math functions #94797
• scalblnf16: [libc][math][c23] Add {ldexp,scalbn,scalbln}f16 C23 math functions #94797
• truncf16: [libc][math][c23] Add {ceil,floor,round,roundeven,trunc}f16 C23 math functions #94001
• ufromfpf16: [libc][math][c23] Add {fromfp,fromfpx,ufromfp,ufromfpx}f16 C23 math functions #94254
• ufromfpxf16: [libc][math][c23] Add {fromfp,fromfpx,ufromfp,ufromfpx}f16 C23 math functions #94254
• totalorderf16: [libc][math][c23] Add {totalorder,totalordermag}f16 C23 math functions #95014
• totalordermagf16: [libc][math][c23] Add {totalorder,totalordermag}f16 C23 math functions #95014
• getpayloadf16: [libc][math][c23] Add {getpayload,setpayload,setpayloadsig}f16 C23 math functions #95159
• setpayloadf16: [libc][math][c23] Add {getpayload,setpayload,setpayloadsig}f16 C23 math functions #95159
• setpayloadsigf16: [libc][math][c23] Add {getpayload,setpayload,setpayloadsig}f16 C23 math functions #95159
• f16add (extension): [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16addf (extension): [libc][math][c23] Add f16{add,sub}f C23 math functions #96787
• f16addl (extension): [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16addf128: [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16sub (extension): [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16subf (extension): [libc][math][c23] Add f16{add,sub}f C23 math functions #96787
• f16subl (extension): [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16subf128: [libc][math][c23] Add f16{add,sub}{,l,f128} C23 math functions #97072
• f16mul (extension): [libc][math][c23] Add {f,d}mul{l,f128} and f16mul{,f,l,f128} C23 math functions #98972
• f16mulf (extension): [libc][math][c23] Add {f,d}mul{l,f128} and f16mul{,f,l,f128} C23 math functions #98972
• f16mull (extension): [libc][math][c23] Add {f,d}mul{l,f128} and f16mul{,f,l,f128} C23 math functions #98972
• f16mulf128: [libc][math][c23] Add {f,d}mul{l,f128} and f16mul{,f,l,f128} C23 math functions #98972
• f16div (extension): [libc][math][c23] Add f16div{,l,f128} C23 math functions #97054
• f16divf (extension): [libc][math][c23] Add f16divf C23 math function #96131
• f16divl (extension): [libc][math][c23] Add f16div{,l,f128} C23 math functions #97054
• f16divf128: [libc][math][c23] Add f16div{,l,f128} C23 math functions #97054
• f16fma (extension): [libc][math][c23] Add f16fma{,l,f128} C23 math function #96711
• f16fmaf (extension): [libc][math][c23] Add f16fmaf C23 math function #95483
• f16fmal (extension): [libc][math][c23] Add f16fma{,l,f128} C23 math function #96711
• f16fmaf128: [libc][math][c23] Add f16fma{,l,f128} C23 math function #96711