NAME

modf — extract signed integral and fractional values from floating-point number

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
modf(double value, double *iptr);

float
modff(float value, float *iptr);

DESCRIPTION

The modf() function breaks the argument value into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a double in the object pointed to by iptr.

RETURN VALUES

The modf() function returns the signed fractional part of value.

SEE ALSO

frexp(3), ldexp(3), math(3)

STANDARDS

The modf() function conforms to ANSI X3.159-1989 (“ANSI C89”).