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 integer part indirectly through iptr.

May 16, 1980