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)