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Fix intermediate rounding of fused multiply-add instructions.

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Andrew Church 2015-01-18 07:04:35 +09:00
parent fee20573d2
commit 43e74a9c61
1 changed files with 1 additions and 1 deletions
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rpcs3/Emu/Cell/PPUInterpreter.h
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@ -3895,7 +3895,7 @@ private:
const double a = CPU.FPR[fra]; const double a = CPU.FPR[fra];
const double b = CPU.FPR[frb]; const double b = CPU.FPR[frb];
const double c = CPU.FPR[frc]; const double c = CPU.FPR[frc];
const double res = a * c + (sub ? -b : b); const double res = fma(a, c, sub ? -b : b);
if(single) CPU.FPR[frd] = (float)(neg ? -res : res); if(single) CPU.FPR[frd] = (float)(neg ? -res : res);
else CPU.FPR[frd] = (neg ? -res : res); else CPU.FPR[frd] = (neg ? -res : res);
CPU.FPSCR.FPRF = CPU.FPR[frd].GetType(); CPU.FPSCR.FPRF = CPU.FPR[frd].GetType();