# Functions HI-TECH C FREXP

**FREXP, LDEXP**

## SYNOPSIS

#include <math.h> double frexp(double f, int * p) double ldexp(double f, int i)

## DESCRIPTION

**Frexp**() breaks a floating point number into a normalized fraction and an integral power of 2. The integer
is stored into the int object pointed to by p. Its
return value x is in the interval [0.5, 1.0) or zero,
and f equals x times 2 raised to the power stored in

- p. If f is zero, both parts of the result are zero.

**Ldexp**() performs the reverse operation; the integer i
is added to the exponent of the floating point f and
the resultant value returned.