dkh.int128

64bit op 64bit -> 128bit の乗算/除算ライブラリ

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Functions

div128 ulong div128(ulong[2] a, ulong b): [a[1], a[0]] / b = return, 答えが64bitに収まらないとヤバイ
mod128 ulong mod128(ulong[2] a, ulong b): [a[1], a[0]] % b = return, 答えが64bitに収まらないとヤバイ
mul128 ulong[2] mul128(ulong a, ulong b): a * b = (return[1]<<64) + return[0]

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dkh modules