| 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 9.3 |