frexp(3)

FREXP(3)            Linux Programmer's Manual            FREXP(3)

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)

GNU                        June 6, 1993                         1

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