float_t, double_t - cppreference.com

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Common mathematical functions Floating-point environment (C99) Pseudo-random number generation Complex number arithmetic (C99) Type-generic math (C99)

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Common mathematical functions

Types
div_t ldiv_t lldiv_t imaxdiv_t (C99) (C99)
float_t double_t (C99) (C99)
_Decimal32_t _Decimal64_t (C23) (C23)
nearbyint (C99)
rint lrint llrint (C99) (C99) (C99)
fromfp fromfpx ufromfp ufromfpx (C23) (C23) (C23) (C23)
Floating-point manipulation functions
ldexp
frexp
scalbn scalbln (C99) (C99)
ilogb llogb (C99) (C23)
logb (C99)
nextafter nexttoward (C99) (C99)
nextup nextdown (C23) (C23)
copysign (C99)
canonicalize (C23)
Narrowing operations
fadd (C23)
fsub (C23)
fmul (C23)
fdiv (C23)
ffma (C23)
fsqrt (C23)
Quantum and quantum exponent functions
quantized N (C23)
samequantumd N (C23)
quantumd N (C23)
llquantexpd N (C23)
Decimal re-encoding functions
encodedecd N (C23)
decodedecd N (C23)
encodebind N (C23)
decodebind N (C23)
Total order and payload functions
totalorder (C23)
getpayload (C23)
setpayload (C23)
setpayloadsig (C23)
Classification
fpclassify (C99)
iscanonical (C23)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
issubnormal (C23)
iszero (C23)
isgreater (C99)
isgreaterequal (C99)
isless (C99)
islessequal (C99)
islessgreater (C99)
isunordered (C99)
issignaling (C23)
iseqsig (C23)
Macro constants
Special floating-point values
HUGE_VALF HUGE_VAL HUGE_VALL HUGE_VALD N (C99) (C99) (C23)
INFINITY DEC_INFINITY (C99) (C23)
NAN DEC_NAN (C99) (C23)
Arguments and return values
FP_ILOGB0 FP_ILOGBNAN (C99) (C99)
FP_INT_UPWARD FP_INT_DOWNWARD FP_INT_TOWARDZERO FP_INT_TONEARESTFROMZERO FP_INT_TONEAREST (C23) (C23) (C23) (C23) (C23)
FP_LLOGB0 FP_LLOGBNAN (C23) (C23)
FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C99) (C99) (C99) (C99) (C99)
Error handling
MATH_ERRNO MATH_ERRNOEXCEPT (C99) (C99)
math_errhandling (C99)
FP_FAST_FMAF FP_FAST_FMA (C99) (C99)
FP_FAST_FADD FP_FAST_FADDL FP_FAST_DADDL FP_FAST_D M ADDD N (C23) (C23) (C23) (C23)
FP_FAST_FMUL FP_FAST_FMULL FP_FAST_DMULL FP_FAST_D M MULD N (C23) (C23) (C23) (C23)
FP_FAST_FFMA FP_FAST_FFMAL FP_FAST_DFMAL FP_FAST_D M FMAD N (C23) (C23) (C23) (C23)
FP_FAST_FMAL FP_FAST_FMAD N (C99) (C23)
FP_FAST_FSUB FP_FAST_FSUBL FP_FAST_DSUBL FP_FAST_D M SUBD N (C23) (C23) (C23) (C23)
FP_FAST_FDIV FP_FAST_FDIVL FP_FAST_DDIVL FP_FAST_D M DIVD N (C23) (C23) (C23) (C23)
FP_FAST_FSQRT FP_FAST_FSQRTL FP_FAST_DSQRTL FP_FAST_D M SQRTD N (C23) (C23) (C23) (C23)

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Defined in header


    <math.h>

printf ( "%d \n " , FLT_EVAL_METHOD ) ; printf ( "%zu %zu \n " , sizeof ( float ) , sizeof ( float_t ) ) ; printf ( "%zu %zu \n " , sizeof ( double ) , sizeof ( double_t ) ) ; return 0 ;

Possible output:

[ edit ] References

C11 standard (ISO/IEC 9899:2011):
- 7.12 Mathematics <math.h> (p: 231)
  - C99 standard (ISO/IEC 9899:1999):
    
    7.12 Mathematics <math.h> (p: 212)
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[ edit ] References

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