The frexp function

Name

frexp -- 

Synopsis

#include <math.h>

double frexp (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.

Returns

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

The ldexp function