FREXP(3)

NAME
frexp - convert floating-point number to fractional and integral components

LIBRARY
libm

SYNOPSIS
#include <math.h>
double
frexp(double value, int *exp);
float
frexpf(float value, int *exp);
long double
frexpl(long double value, int *exp);

DESCRIPTION
The frexp() function breaks a floating-point number into a normalized fraction and an integral power of 2. It stores the integer in the int object pointed to by exp.

RETURN VALUES
The frexp() function returns the value x, such that x is a double with magnitude in the interval [1/2, 1) or zero, and value equals x times 2 raised to the power *exp. If value is zero, both parts of the result are zero.

SEE ALSO
ldexp(3), math(3), modf(3)

STANDARDS
The frexp() function conforms to ansiC.