FREXP(1)                    C LIBRARY FUNCTIONS                     FREXP(1)

NAME
     frexp and ldexp - free exponent and load exponent functions.

SYNOPSIS
     double frexp(double value, int *exp_ptr);

     double ldexp(double value, int exp);

INCLUDE FILE
     math.h

DESCRIPTION
     frexp() and ldexp() are primitives called by other functions in the
     library.

     frexp(v,&exp) returns a double x in the range [1/2 , 1[ or 0, such that

              v = x * 2^exp

           is true.

     ldexp(x,n) returns x * 2**n computed by exponent manipulation rather
           than by actually performing an exponentiation or a multiplication.

SEE ALSO
     exp(), pow().