frexp man page on UNIXv7

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FREXP(3)							      FREXP(3)

NAME
       frexp, ldexp, modf - split into mantissa and exponent

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

       double ldexp(value, exp)
       double value;

       double modf(value, iptr)
       double value, *iptr;

DESCRIPTION
       Frexp  returns  the mantissa of a double value as a double quantity, x,
       of magnitude less than 1 and stores an integer  n  such	that  value  =
       x*2**n indirectly through eptr.

       Ldexp returns the quantity value*2**exp.

       Modf returns the positive fractional part of value and stores the inte‐
       ger part indirectly through iptr.

								      FREXP(3)
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