Importance

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Abstract

An emod operation is a computational substitute for a traditional modulus operation, one that is computationally less expensive but also less precise. Where a modulus operation may be defined for some base number n, the emod operation determines a modulus of an operand using a 'phantom modulus,' one that is an integer multiple of n. The phantom modulus is chosen to make emod calculations computationally inexpensive when compared to a modulus operation. Thus, the emod operation is particularly useful for multiplications or exponential operations using very large operands. Upon conclusion of interstitial processing associated with the multiplications or exponential operations, a single, traditional modulus operation may be used to obtain a final result.

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First Claim