Determines the maximum numeric value of two floating-point numbers.
#include <math.h>
double fmax (x, y)
double x;
double y;
float fmaxf (x, y)
float x;
float y;
long double fmaxl (x, y)
long double x;
long double y;
_Decimal32 fmaxd32 (x, y);
_Decimal32 x;
_Decimal32 y;
_Decimal64 fmaxd64 (x, y);
_Decimal64 x;
_Decimal64 y;
_Decimal128 fmaxd128 (x, y);
_Decimal128 x;
_Decimal128 y;The fmax, fmaxf, fmaxl, fmaxd32, fmaxd64, and fmaxd128 subroutines determine the maximum numeric value of their arguments. NaN arguments are treated as missing data. If one argument is a NaN and the other numeric, the fmax, fmaxf, fmaxl, fmaxd32, fmaxd64, and fmaxd128 subroutines choose the numeric value.
| Item | Description |
|---|---|
| x | Specifies the value to be computed. |
| y | Specifies the value to be computed. |
Upon successful completion, the fmaxl, fmaxf, fmaxl, fmaxd32, fmaxd64, and fmaxd128 subroutines return the maximum numeric value of their arguments.
If one argument is a NaN, the other argument is returned.
If x and y are NaN, a NaN is returned.