NAME
frexp - split float into fraction and exponent
SYNOPSIS
mixed *frexp(float x)
DESCRIPTION
The argument is split into a fraction f and an integer exponent n,
such that either f == 0.0, or 0.5 <= | f | < 1.0, and f * 2 ** n == x.
({ f, n }) is returned. If x == 0.0, both f and n will be zero.