FREXP(3) | Library Functions Manual | FREXP(3) |
frexp
—
#include <math.h>
double
frexp
(double
value, int
*exp);
float
frexpf
(float
value, int
*exp);
long double
frexpl
(long
double value, int
*exp);
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.
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.
frexp
() function conforms to ANSI
X3.159-1989 (“ANSI C89”).
September 10, 2015 | NetBSD 9.0 |