remainder(), remainderf(), remainderl()

Compute the floating point remainder

Synopsis:

#include <math.h>

double remainder( double x, 
                  double y );

float remainderf( float x, 
                  float y );

long double remainderl( long double x, 
                        long double y );

Arguments:

x
The numerator of the division.
y
The denominator.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

These functions return the floating point remainder r = x - ny, where y is nonzero. The value n is the integral value nearest the exact value x/y. When |n - x/y| = ½, the value n is chosen to be even.

The behavior of remainder() is independent of the rounding mode.

To check for error situations, use feclearexcept() and fetestexcept():

Returns:

The floating point remainder r = x - ny, where y is nonzero. If x is infinite or y is zero and the other is non-NaN, these functions return NaN, and a domain error occurs. If x or y is NaN, the functions return NaN.

Errors:

FE_INVALID
The x argument is ±Inf, or y is 0 and the other argument is non-NaN.

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes