redhat man page for modf

MODF(3) 						     Linux Programmer's Manual							   MODF(3)

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

SYNOPSIS
       #include <math.h>

       double modf(double x, double *iptr);

DESCRIPTION
       The  modf() function breaks the argument x into an integral part and a fractional part, each of which has the same sign as x.  The integral
       part is stored in iptr.

RETURN VALUE
       The modf() function returns the fractional part of x.

CONFORMING TO
       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO
       frexp(3), ldexp(3)

								    1993-06-06								   MODF(3)