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Don't use __umulh() with MinGW on ARM64

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Sutou Kouhei 2022-10-28 15:33:37 +09:00
parent b4d7cceb93
commit 5a71e5bc40
1 changed files with 2 additions and 1 deletions
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3
include/fast_float/float_common.h
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@ -183,8 +183,9 @@ fastfloat_really_inline uint64_t _umul128(uint64_t ab, uint64_t cd,
fastfloat_really_inline value128 full_multiplication(uint64_t a,
uint64_t b) {
value128 answer;
#ifdef _M_ARM64
#if defined(_M_ARM64) && !defined(__MINGW32__)
// ARM64 has native support for 64-bit multiplications, no need to emulate
// But MinGW on ARM64 doesn't have native support for 64-bit multiplications
answer.high = __umulh(a, b);
answer.low = a * b;
#elif defined(FASTFLOAT_32BIT) || (defined(_WIN64) && !defined(__clang__))