frexp3
Convert floating-point number to fractional and integral components
Usage
#include <math.h>
double
frexp(double value, int *exp);
float
frexpf(float value, int *exp);
long double
frexpl(long double value, int *exp);
Library
Math Library (libm, -lm)
Overview
The frexp(), frexpf() and frexpl() functions break a floating-point number into a normalized fraction and an integral power of 2. They store the integer in the int object pointed to by exp.
Return values
These functions return 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.
Releases
87 releases since FreeBSD 2.0.5-RELEASE; the text changed 44 times.