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 frexpl()                Long Double Precision frep()

 #include   <math.h>

 long double frexpl(long double x, int *expptr);
 long double x;         Long double precision value
 int *expptr;           Pointer to stored integer exponent

    This is the long double-precision version of frexp(); it dissects
    x into a mantissa and an exponent such that:

                       0.5 . mantissa . 1.0

                                       exponent
                       x = mantissa * 2

    It returns the mantissa directly; expptr is filled with a
    pointer to the exponent. See frexp() for more information.

    Returns:    The mantissa, or 0 if x is 0.

 Portability:   Not supported by the ANSI standard.