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)