fmod
floating-point remainder function
INTERFACE
#include <math.h>
double fmod ( double x, double y )
long fmodl ( long double x, long double y )
float fmodf ( float x, float y )DESCRIPTION
The fmod functions compute the floating-point remainder of dividing x by y.
The return value is x - n y, where n is the quotient of x / y, rounded to the first integer towards zero.
Example 1
Workings
\code #include <stdio.h> #include <math.h> int main(void) { double x = 2*3.1415926 + 0.14527, y = 3.1415926; printf("fmod(x, y) = %.5lf
", fmod(x, y)); return 0; } \endcode
Solution
Output:
fmod(x, y) = 0.14527SPECIAL VALUES
fmod ( ±0, y ) returns ±0 for y not zero.
fmod ( x, y ) returns a NaN and raises the invalid floating-point exception for x infinite or y zero.
fmod ( x, ±∞ ) returns x for x not infinite.
SEE ALSO
STANDARDS
The fmod functions conform to ISO/IEC 9899:1999(E).