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MODF(3) BSD Library Functions Manual MODF(3)
NAME
modf -- return integral and fractional parts
SYNOPSIS
#include <math.h>
double
modf(double value, double *iptr);
long double
modfl(long double value, long double *iptr);
float
modff(float value, float *iptr);
DESCRIPTION
The modf() break value into integral and fractional parts, each of which has the same sign as the argu-ment. argument.
ment. They return the fractional part, and store the integral part (as a floating-point number) in the
object pointed to by iptr
SPECIAL VALUES
modf(+-infinity, iptr) returns +-0 and stores +-infinity in the object pointed to by iptr.
modf(NaN, iptr) returns a NaN and stores a NaN in the object pointed to by iptr.
SEE ALSO
frexp(3), ldexp(3), math(3)
STANDARDS
The modf() functions conform to ISO/IEC 9899:1999(E).
BSD December 11, 2006 BSD
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