MODF(3) MachTen Programmer’s Manual MODF(3)

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

SYNOPSIS
#include <math.h>

double
modf(double value, double *iptr)

DESCRIPTION
The modf() function breaks the argument value into integral and fraction-
al 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 C3.159-1989 (‘‘ANSI C’’).

4.4BSD June 4, 1993 1