frexp(3) — bsd

FREXP(3)                             BSD                              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*2n
     indirectly through eptr.

     ldexp returns the quantity value*2exp.

     modf returns the signed fractional part of value and stores the integer
     part indirectly through iptr.
Museum
