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)