See intermediate steps:
- From C90 to C95
- From C95 to C99
Names specified in C99 but not in C89
- __bool_- true_ - false_ - are_ - defined 
- __func__
- __STDC_- HOSTED__ 
- __STDC_- IEC_ - 559__ 
- __STDC_- IEC_ - 559_ - COMPLEX__ 
- __STDC_- ISO_ - 10646__ 
- __STDC_- NO_ - COMPLEX__ 
- __STDC_- NO_ - VLA__ 
- __STDC_- VERSION__ 
- __VA_- ARGS__ 
- _Bool
- _Complex
- _Complex_I
- _Exit
- _Imaginary
- _Imaginary_I
- _Pragma
- acos
- acosf
- acosh
- acoshf
- acoshl
- acosl
- and
- and_eq
- asin
- asinf
- asinh
- asinhf
- asinhl
- asinl
- atan
- atan2
- atan2f
- atan2l
- atanf
- atanh
- atanhf
- atanhl
- atanl
- atoll
- bitand
- bitor
- bool
- btowc
- CX_- LIMITED_ - RANGE 
- cabs
- cabsf
- cabsl
- cacos
- cacosf
- cacosh
- cacoshf
- cacoshl
- cacosl
- carg
- carg
- cargf
- cargl
- casin
- casinf
- casinh
- casinhf
- casinhl
- casinl
- catan
- catanf
- catanh
- catanhf
- catanhl
- catanl
- cbrt
- cbrt
- cbrtf
- cbrtl
- ccos
- ccosf
- ccosh
- ccoshf
- ccoshl
- ccosl
- ceil
- ceilf
- ceill
- cexp
- cexpf
- cexpl
- cimag
- cimag
- cimagf
- cimagl
- clog
- clogf
- clogl
- compl
- complex
- conj
- conj
- conjf
- conjl
- copysign
- copysign
- copysignf
- copysignl
- cos
- cosf
- cosh
- coshf
- coshl
- cosl
- cpow
- cpowf
- cpowl
- cproj
- cproj
- cprojf
- cprojl
- creal
- creal
- crealf
- creall
- csin
- csinf
- csinh
- csinhf
- csinhl
- csinl
- csqrt
- csqrtf
- csqrtl
- ctan
- ctanf
- ctanh
- ctanhf
- ctanhl
- ctanl
- double _Complex
- double _Imaginary
- double complex
- double imaginary
- double_t
- EILSEQ
- erf
- erf
- erfc
- erfc
- erfcf
- erfcl
- erff
- erfl
- exp
- exp2
- exp2
- exp2f
- exp2l
- expf
- expl
- expm1
- expm1
- expm1f
- expm1l
- FE_- ALL_ - EXCEPT 
- FE_- DFL_ - ENV 
- FE_- DIVBYZERO 
- FE_- DOWNWARD 
- FE_- INEXACT 
- FE_- INVALID 
- FE_- OVERFLOW 
- FE_- TONEAREST 
- FE_- TOWARDZERO 
- FE_- UNDERFLOW 
- FE_- UPWARD 
- FENV_- ACCESS 
- FLT_- EVAL_ - METHOD 
- FP_- CONTRACT 
- FP_- FAST_ - FMA 
- FP_- FAST_ - FMAF 
- FP_- FAST_ - FMAL 
- FP_- ILOGB0 
- FP_- ILOGBNAN 
- FP_- INFINITE 
- FP_- NAN 
- FP_- NORMAL 
- FP_- SUBNORMAL 
- FP_- ZERO 
- fabs
- fabsf
- fabsl
- false
- fdim
- fdim
- fdimf
- fdiml
- feclearexcept
- fegetenv
- fegetexceptflag
- fegetround
- feholdexcept
- fenv_t
- feraiseexcept
- fesetenv
- fesetexceptflag
- fesetround
- fetestexcept
- feupdateenv
- fexcept_t
- fgetwc
- fgetws
- float _Complex
- float _Imaginary
- float complex
- float imaginary
- float_t
- floor
- floorf
- floorl
- fma
- fma
- fmaf
- fmal
- fmax
- fmax
- fmaxf
- fmaxl
- fmin
- fmin
- fminf
- fminl
- fmod
- fmodf
- fmodl
- fpclassify
- fputwc
- fputws
- frexp
- frexpf
- frexpl
- fwide
- fwprintf
- fwscanf
- getwc
- getwchar
- HUGE_- VALF 
- HUGE_- VALL 
- hypot
- hypot
- hypotf
- hypotl
- I
- INFINITY
- INT16_C
- INT16_- MAX 
- INT16_- MIN 
- INT32_C
- INT32_- MAX 
- INT32_- MIN 
- INT64_C
- INT64_- MAX 
- INT64_- MIN 
- INT8_C
- INT8_- MAX 
- INT8_- MIN 
- INT_- FAST16_ - MAX 
- INT_- FAST16_ - MIN 
- INT_- FAST32_ - MAX 
- INT_- FAST32_ - MIN 
- INT_- FAST64_ - MAX 
- INT_- FAST64_ - MIN 
- INT_- FAST8_ - MAX 
- INT_- FAST8_ - MIN 
- INT_- LEAST16_ - MAX 
- INT_- LEAST16_ - MIN 
- INT_- LEAST32_ - MAX 
- INT_- LEAST32_ - MIN 
- INT_- LEAST64_ - MAX 
- INT_- LEAST64_ - MIN 
- INT_- LEAST8_ - MAX 
- INT_- LEAST8_ - MIN 
- INTMAX_C
- INTMAX_- MAX 
- INTMAX_- MIN 
- INTPTR_- MAX 
- INTPTR_- MIN 
- ilogb
- ilogb
- ilogbf
- ilogbl
- imaginary
- imaxdiv
- imaxdiv_t
- inline
- int16_t
- int32_t
- int64_t
- int8_t
- int_- fast16_t 
- int_- fast32_t 
- int_- fast64_t 
- int_- fast8_t 
- int_- least16_t 
- int_- least32_t 
- int_- least64_t 
- int_- least8_t 
- intmax_t
- intptr_t
- isblank
- isfinite
- isgreater
- isgreaterequal
- isinf
- isless
- islessequal
- islessgreater
- isnan
- isnormal
- isunordered
- iswalnum
- iswalpha
- iswblank
- iswcntrl
- iswctype
- iswdigit
- iswgraph
- iswlower
- iswprint
- iswpunct
- iswspace
- iswupper
- iswxdigit
- LLONG_- MAX 
- LLONG_- MIN 
- ldexp
- ldexpf
- ldexpl
- ldiv
- ldiv_t
- lgamma
- lgamma
- lgammaf
- lgammal
- llabs
- lldiv
- lldiv_t
- llrint
- llrint
- llrintf
- llrintl
- llround
- llround
- llroundf
- llroundl
- log
- log10
- log10
- log10f
- log10l
- log1p
- log1p
- log1pf
- log1pl
- log2
- log2
- log2f
- log2l
- logb
- logb
- logbf
- logbl
- logf
- logl
- long double _Complex
- long double _Imaginary
- long double complex
- long double imaginary
- long long
- lrint
- lrint
- lrintf
- lrintl
- lround
- lround
- lroundf
- lroundl
- mbrlen
- mbrtowc
- mbsinit
- mbsrtowcs
- mbstate_t
- modf
- modff
- modfl
- NAN
- nan
- nanf
- nanl
- nearbyint
- nearbyint
- nearbyintf
- nearbyintl
- nextafter
- nextafter
- nextafterf
- nextafterl
- nexttoward
- nexttoward
- nexttowardf
- nexttowardl
- not
- not_eq
- or
- or_eq
- PRId16
- PRId32
- PRId64
- PRId8
- PRIdFAST16
- PRIdFAST32
- PRIdFAST64
- PRIdFAST8
- PRIdLEAST16
- PRIdLEAST32
- PRIdLEAST64
- PRIdLEAST8
- PRIdMAX
- PRIdPTR
- PRIi16
- PRIi32
- PRIi64
- PRIi8
- PRIiFAST16
- PRIiFAST32
- PRIiFAST64
- PRIiFAST8
- PRIiLEAST16
- PRIiLEAST32
- PRIiLEAST64
- PRIiLEAST8
- PRIiMAX
- PRIiPTR
- PRIo16
- PRIo32
- PRIo64
- PRIo8
- PRIoFAST16
- PRIoFAST32
- PRIoFAST64
- PRIoFAST8
- PRIoLEAST16
- PRIoLEAST32
- PRIoLEAST64
- PRIoLEAST8
- PRIoMAX
- PRIoPTR
- PRIu16
- PRIu32
- PRIu64
- PRIu8
- PRIuFAST16
- PRIuFAST32
- PRIuFAST64
- PRIuFAST8
- PRIuLEAST16
- PRIuLEAST32
- PRIuLEAST64
- PRIuLEAST8
- PRIuMAX
- PRIuPTR
- PRIX16
- PRIX32
- PRIX64
- PRIX8
- PRIXFAST16
- PRIXFAST32
- PRIXFAST64
- PRIXFAST8
- PRIXLEAST16
- PRIXLEAST32
- PRIXLEAST64
- PRIXLEAST8
- PRIXMAX
- PRIXPTR
- PRIx16
- PRIx32
- PRIx64
- PRIx8
- PRIxFAST16
- PRIxFAST32
- PRIxFAST64
- PRIxFAST8
- PRIxLEAST16
- PRIxLEAST32
- PRIxLEAST64
- PRIxLEAST8
- PRIxMAX
- PRIxPTR
- PTRDIFF_- MAX 
- PTRDIFF_- MIN 
- pow
- powf
- powl
- putwc
- putwchar
- remainder
- remainder
- remainderf
- remainderl
- remquo
- remquo
- remquof
- remquol
- restrict
- rint
- rint
- rintf
- rintl
- round
- round
- roundf
- roundl
- SCNd16
- SCNd32
- SCNd64
- SCNd8
- SCNdFAST16
- SCNdFAST32
- SCNdFAST64
- SCNdFAST8
- SCNdLEAST16
- SCNdLEAST32
- SCNdLEAST64
- SCNdLEAST8
- SCNdMAX
- SCNdPTR
- SCNi16
- SCNi32
- SCNi64
- SCNi8
- SCNiFAST16
- SCNiFAST32
- SCNiFAST64
- SCNiFAST8
- SCNiLEAST16
- SCNiLEAST32
- SCNiLEAST64
- SCNiLEAST8
- SCNiMAX
- SCNiPTR
- SCNo16
- SCNo32
- SCNo64
- SCNo8
- SCNoFAST16
- SCNoFAST32
- SCNoFAST64
- SCNoFAST8
- SCNoLEAST16
- SCNoLEAST32
- SCNoLEAST64
- SCNoLEAST8
- SCNoMAX
- SCNoPTR
- SCNu16
- SCNu32
- SCNu64
- SCNu8
- SCNuFAST16
- SCNuFAST32
- SCNuFAST64
- SCNuFAST8
- SCNuLEAST16
- SCNuLEAST32
- SCNuLEAST64
- SCNuLEAST8
- SCNuMAX
- SCNuPTR
- SCNx16
- SCNx32
- SCNx64
- SCNx8
- SCNxFAST16
- SCNxFAST32
- SCNxFAST64
- SCNxFAST8
- SCNxLEAST16
- SCNxLEAST32
- SCNxLEAST64
- SCNxLEAST8
- SCNxMAX
- SCNxPTR
- SIG_- ATOMIC_ - MAX 
- SIG_- ATOMIC_ - MIN 
- SIZE_- MAX 
- scalbln
- scalbln
- scalblnf
- scalblnl
- scalbn
- scalbn
- scalbnf
- scalbnl
- signbit
- sin
- sinf
- sinh
- sinhf
- sinhl
- sinl
- snprintf
- sqrt
- sqrtf
- sqrtl
- static
- strtof
- strtoimax
- strtold
- strtoll
- strtoull
- strtoumax
- swprintf
- swscanf
- tan
- tanf
- tanh
- tanhf
- tanhl
- tanl
- tgamma
- tgamma
- tgammaf
- tgammal
- towctrans
- towlower
- towupper
- true
- trunc
- trunc
- truncf
- truncl
- UINT16_C
- UINT16_- MAX 
- UINT32_C
- UINT32_- MAX 
- UINT64_C
- UINT64_- MAX 
- UINT8_C
- UINT8_- MAX 
- UINT_- FAST16_ - MAX 
- UINT_- FAST32_ - MAX 
- UINT_- FAST64_ - MAX 
- UINT_- FAST8_ - MAX 
- UINT_- LEAST16_ - MAX 
- UINT_- LEAST32_ - MAX 
- UINT_- LEAST64_ - MAX 
- UINT_- LEAST8_ - MAX 
- UINTMAX_C
- UINTMAX_- MAX 
- UINTPTR_- MAX 
- ULLONG_- MAX 
- uint16_t
- uint32_t
- uint64_t
- uint8_t
- uint_- fast16_t 
- uint_- fast32_t 
- uint_- fast64_t 
- uint_- fast8_t 
- uint_- least16_t 
- uint_- least32_t 
- uint_- least64_t 
- uint_- least8_t 
- uintmax_t
- uintptr_t
- ungetwc
- unsigned long long
- va_- copy 
- vfscanf
- vfwprintf
- vfwscanf
- vscanf
- vsnprintf
- vsscanf
- vswprintf
- vswscanf
- vwprintf
- vwscanf
- WCHAR_- MAX 
- WCHAR_- MIN 
- WEOF
- WINT_- MAX 
- WINT_- MIN 
- wchar_t
- wcrtomb
- wcscat
- wcschr
- wcscmp
- wcscoll
- wcscpy
- wcscspn
- wcsftime
- wcslen
- wcsncat
- wcsncmp
- wcsncpy
- wcspbrk
- wcsrchr
- wcsrtombs
- wcsspn
- wcsstr
- wcstod
- wcstof
- wcstoimax
- wcstok
- wcstol
- wcstold
- wcstoll
- wcstombs
- wcstoul
- wcstoull
- wcstoumax
- wcsxfrm
- wctob
- wctrans
- wctrans_t
- wctype
- wctype_t
- wint_t
- wmemchr
- wmemcmp
- wmemcpy
- wmemmove
- wmemset
- wprintf
- wscanf
- xor
- xor_eq
