Addition
Addition is a mathematical operation that represents combining collections of objects together into a larger collection
Exponent
Exponentiation is a mathematical operation, written as b raised to the power of n, involving two numbers, the base b and the exponent (or power) n.
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Since fp addition shifts the smaller operand s mantissa until both operands have the same exponent you can add a certain magic number to force it from question Converting SIGNED fractions to UNSIGNED fixed point for addition and multiplication |
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In addition for doing powers of two bitshifting is usually a little clearer than doing exponent though choose whatever works for you from question Bitwise operations in Visual Basic .NET |