Calculate the floating-point remainder.
#include <math.h>
double fmod( doublex,doubley );
long double _fmodl( long doublex,long doubley );
| x, y | Floating-point values |
The fmod and _fmodl functions calculate the floating-point remainder f of x / y such that x = i *y + f, where i is an integer, f has the same sign as x, and the absolute value of f is less than the absolute value of y.
The _fmodl function is the 80-bit counterpart; it uses the 80-bit, 10-byte coprocessor form of arguments and return values. See the discussion of the long double functions for more details on this data type.
These functions return the floating-point remainder. If y is 0, the function returns 0.
fmod
Standards:ANSI, UNIX
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:DOS32X
_fmodl
Standards:None
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:None
/* FMOD.C: This program displays a floating-point remainder. */
#include <math.h>
#include <stdio.h>
void main( void )
{
double x = -10.0, y = 3.0, z;
z = fmod( x, y );
printf( "The remainder of %.2f / %.2f is %f\n", x, y, z );
}
The remainder of -10.00 / 3.00 is -1.000000