Determines the exponent of the base of two
int = GetExp(exp)
exp:floating-point expresssion
GetExp() determines the exponent of the base of two. It is part of a set of three functions, GetExp(), LdExp() and Mant(), that break down a floating-point value.
The GetExp() and Mant() correspond to the frexp C-function, which breaks down the floating-point value (exp) into a mantissa (m) and an exponent (n), such that the absolute value of m is greater than or equal to 0.5 and less than 1.0, and x = m*2n. The integer exponent n is obtained using GetExp() and m with Mant().
LdExp(m, exp) computes a real number from the mantissa and exponent.
Debug.Show
Local Double a, b, i, c, x
Trace GetExp(197) // Prints 8
a = GetExp(197)
Trace Mant(197) // Prints 0.76953125
b = Mant(197)
c = LdExp(a, b)
Trace c // Prints 197
x = 111
Trace 2 ^ GetExp(x) * Mant(x) // Prints 111
{Created by Sjouke Hamstra; Last updated: 07/10/2014 by James Gaite}