remainder(), remainderf(), drem(), dremf() -- calculate remainder

SYNOPSIS

#include <math.h>

double remainder(double x, double y);

float remainderf(float x, float y);

double drem(double x, double y);

float dremf(float x, float y);

DESCRIPTION

The remainder() function returns the remainder r:

x - n * y;

where n is the integer nearest the exact value of x/y; if |n - x/y| = 1/2, then n is even.

The drem() function is identical to remainder().

The remainderf() and dremf() functions are single-precision versions of remainder() and drem() respectively.

PARAMETERS

x: The value of the numerator.
y: The value of the denominator.

RETURN VALUES

The remainder() function returns the remainder r as defined above.

If y is 0.0 or x is Infinity and y is 0.0, remainder() returns NaN. If in POSIX mode, errno is set to EDOM, if in SVID or XOPEN modes, matherror() is called.

CONFORMANCE

remainder(): UNIX 98

drem(): 4.4BSD

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

remainder(), remainderf(), drem(), dremf()
calculate remainder

Function