NAME
modf, modff,
modfl —
extract signed integral and fractional
values from floating-point number
SYNOPSIS
#include
<math.h>
double
modf(double
value, double
*iptr);
float
modff(float
value, float
*iptr);
long double
modfl(long
double value, long double
*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. The
modff()
function is a single precision version of modf().
The
modfl()
function is an extended precision version of
modf().
RETURN VALUES
The modf(),
modff() and modfl()
functions return the signed fractional part of
value.
SEE ALSO
STANDARDS
The modf() function conforms to
ANSI X3.159-1989
(“ANSI C89”).