frexp
Hurricane Electric Internet Services
NAME
frexp - convert floating-point number to fractional and
integral components
SYNOPSIS
#include <math.h>
double frexp(double x, int *exp);
DESCRIPTION
The frexp() function is used to split the number x into a
normalized fraction and an exponent which is stored in
exp.
RETURN VALUE
The frexp() function returns the normalized fraction. If
the argument x is not zero, the normalized fraction is x
times a power of two, and is always in the range 1/2
(inclusive) to 1 (exclusive). If x is zero, then the nor-
malized fraction is zero and zero is stored in exp.
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
ldexp(3), modf(3)
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Hurricane Electric.
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