FREXP(3) | FreeBSD Library Functions Manual | FREXP(3) |
NAME
frexp, frexpf, frexpl — convert floating-point number to fractional and integral componentsLIBRARY
Math Library (libm, -lm)SYNOPSIS
#include < math.h> double
frexp( double value, int *exp);
float
frexpf( float value, int *exp);
long double
frexpl( long double value, int *exp);
DESCRIPTION
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.STANDARDS
The frexp(), frexpf(), and frexpl() functions conform to ISO/IEC 9899:1999 (“ISO C99”).March 4, 2005 | FreeBSD |