Fixed bug 1925 - SDL_GetPerformanceFrequency returns incorrect value …

…on iOS PoopiSan Currently on OSX and iOS simulator the values: mach_base_info.denom = 1 mach_base_info.numer = 1 but on the real iOS device mach_base_info.denom = 3 mach_base_info.numer = 125 The calculation is made using following formula mach_base_info.denom / mach_base_info.numer * 1000000 but all values are int32 and the result is casted to int64. This solves the problem: return 1.0 * mach_base_info.denom / mach_base_info.numer * 1000000;
libsdl-org · Aug 10, 2013 · dfcef77 · dfcef77
1 parent c51d1c2
commit dfcef77
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/timer/unix/SDL_systimer.c b/src/timer/unix/SDL_systimer.c
@@ -135,9 +135,9 @@ SDL_GetPerformanceFrequency(void)
 #if HAVE_CLOCK_GETTIME
         return 1000000000;
 #elif defined(__APPLE__)
-        Uint64 freq = mach_base_info.numer;
+        Uint64 freq = mach_base_info.denom;
         freq *= 1000000000;
-        freq /= mach_base_info.denom;
+        freq /= mach_base_info.numer;
         return freq;
 #endif
     } else {