NAME

frexp, ldexp, modf − split into mantissa and exponent

USAGE

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 (indirectly through eptr) an integer n such that value = x*2**n. 

Ldexp returns the quantity value*2**exp. 

Modf returns the positive fractional part of value and stores the integer part indirectly through iptr.