Optimize ((a mod modulus) + modulus) mod modulo
#93
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Hmm, looks like there's a Nim 1.4 bug... |
dlesnoff
reviewed
Jan 26, 2022
dlesnoff
reviewed
Jan 26, 2022
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I managed to work around the bug, but I have no idea what caused it. |
dlesnoff
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Jan 29, 2022
dlesnoff
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Jan 31, 2022
dlesnoff
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Jan 31, 2022
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These changes seems fine to me.
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Avoids doing
modtwice.I also swapped
a.modulo(modulus)andmodulusininvmod, to skip the first iteration (otherwiseqwould always be zero in the first iteration, sincea.modulo(modulus) < modulus).