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author | bunnei <bunneidev@gmail.com> | 2021-02-15 23:46:04 +0100 |
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committer | bunnei <bunneidev@gmail.com> | 2021-02-15 23:46:04 +0100 |
commit | 0a91599aec5a0c4d4c87d3e23fea07dbb6ced0f7 (patch) | |
tree | 1319cde17514c49d01045379d3a7ce2b4ccace0a /src/common/uint128.cpp | |
parent | Merge pull request #5939 from Morph1984/web_types (diff) | |
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Diffstat (limited to 'src/common/uint128.cpp')
-rw-r--r-- | src/common/uint128.cpp | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/src/common/uint128.cpp b/src/common/uint128.cpp deleted file mode 100644 index 16bf7c828..000000000 --- a/src/common/uint128.cpp +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2019 yuzu Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#ifdef _MSC_VER -#include <intrin.h> - -#pragma intrinsic(_umul128) -#pragma intrinsic(_udiv128) -#endif -#include <cstring> -#include "common/uint128.h" - -namespace Common { - -#ifdef _MSC_VER - -u64 MultiplyAndDivide64(u64 a, u64 b, u64 d) { - u128 r{}; - r[0] = _umul128(a, b, &r[1]); - u64 remainder; -#if _MSC_VER < 1923 - return udiv128(r[1], r[0], d, &remainder); -#else - return _udiv128(r[1], r[0], d, &remainder); -#endif -} - -#else - -u64 MultiplyAndDivide64(u64 a, u64 b, u64 d) { - const u64 diva = a / d; - const u64 moda = a % d; - const u64 divb = b / d; - const u64 modb = b % d; - return diva * b + moda * divb + moda * modb / d; -} - -#endif - -u128 Multiply64Into128(u64 a, u64 b) { - u128 result; -#ifdef _MSC_VER - result[0] = _umul128(a, b, &result[1]); -#else - unsigned __int128 tmp = a; - tmp *= b; - std::memcpy(&result, &tmp, sizeof(u128)); -#endif - return result; -} - -std::pair<u64, u64> Divide128On32(u128 dividend, u32 divisor) { - u64 remainder = dividend[0] % divisor; - u64 accum = dividend[0] / divisor; - if (dividend[1] == 0) - return {accum, remainder}; - // We ignore dividend[1] / divisor as that overflows - const u64 first_segment = (dividend[1] % divisor) << 32; - accum += (first_segment / divisor) << 32; - const u64 second_segment = (first_segment % divisor) << 32; - accum += (second_segment / divisor); - remainder += second_segment % divisor; - if (remainder >= divisor) { - accum++; - remainder -= divisor; - } - return {accum, remainder}; -} - -} // namespace Common |