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Avoid overflow when calculating multiplying performance counter

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Alcaro 2020-02-28 18:07:00 +01:00 committed by GitHub
parent a10db7c280
commit 472fe9a991
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1 changed files with 1 additions and 1 deletions
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libretro-common/features/features_cpu.c
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@ -225,7 +225,7 @@ retro_time_t cpu_features_get_time_usec(void)
if (!QueryPerformanceCounter(&count)) if (!QueryPerformanceCounter(&count))
return 0; return 0;
return count.QuadPart * 1000000 / freq.QuadPart; return (count.QuadPart / freq.QuadPart * 1000000) + (count.QuadPart % freq.QuadPart * 1000000 / freq.QuadPart);
#elif defined(__CELLOS_LV2__) #elif defined(__CELLOS_LV2__)
return sys_time_get_system_time(); return sys_time_get_system_time();
#elif defined(GEKKO) #elif defined(GEKKO)