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armemu: Fix FSUBS bug where NaN shouldn't be negated

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Normmatt 2014-12-16 05:53:19 -05:00 committed by Lioncash
parent 0fd731ee63
commit 2ed03c10e0
1 changed files with 4 additions and 1 deletions
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5
src/core/arm/skyeye_common/vfp/vfpsingle.cpp
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@ -1148,7 +1148,10 @@ static u32 vfp_single_fsub(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
/* /*
* Subtraction is addition with one sign inverted. * Subtraction is addition with one sign inverted.
*/ */
return vfp_single_fadd(state, sd, sn, vfp_single_packed_negate(m), fpscr); if (m != 0x7FC00000) // Only negate if m isn't NaN.
m = vfp_single_packed_negate(m);
return vfp_single_fadd(state, sd, sn, m, fpscr);
} }
/* /*