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Fix vmaxfp/vminfp with mixed signs of zero.

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This commit is contained in:
Andrew Church
2015-01-18 07:05:30 +09:00
parent 10c706d9a5
commit 3eb3f66e96
1 changed files with 17 additions and 5 deletions
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rpcs3/Emu/Cell/PPUInterpreter.h
+17 -5
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@@ -463,13 +463,13 @@ private:
for (uint w = 0; w < 4; w++) for (uint w = 0; w < 4; w++)
{ {
u32 mask = 0; u32 mask = 1<<31 | 1<<30;
const float A = CheckVSCR_NJ(CPU.VPR[va]._f[w]); const float A = CheckVSCR_NJ(CPU.VPR[va]._f[w]);
const float B = CheckVSCR_NJ(CPU.VPR[vb]._f[w]); const float B = CheckVSCR_NJ(CPU.VPR[vb]._f[w]);
if (A > B) mask |= 1 << 31; if (A <= B) mask &= ~(1 << 31);
if (A < -B) mask |= 1 << 30; if (A >= -B) mask &= ~(1 << 30);
CPU.VPR[vd]._u32[w] = mask; CPU.VPR[vd]._u32[w] = mask;
@@ -881,8 +881,14 @@ private:
CPU.VPR[vd]._f[w] = SilenceNaN(a); CPU.VPR[vd]._f[w] = SilenceNaN(a);
else if (std::isnan(b)) else if (std::isnan(b))
CPU.VPR[vd]._f[w] = SilenceNaN(b); CPU.VPR[vd]._f[w] = SilenceNaN(b);
else if (a > b)
CPU.VPR[vd]._f[w] = a;
else if (b > a)
CPU.VPR[vd]._f[w] = b;
else if (CPU.VPR[vb]._u32[w] == 0x80000000)
CPU.VPR[vd]._f[w] = a; // max(+0,-0) = +0
else else
CPU.VPR[vd]._f[w] = std::max(a, b); CPU.VPR[vd]._f[w] = b;
} }
} }
void VMAXSB(u32 vd, u32 va, u32 vb) //nf void VMAXSB(u32 vd, u32 va, u32 vb) //nf
@@ -975,8 +981,14 @@ private:
CPU.VPR[vd]._f[w] = SilenceNaN(a); CPU.VPR[vd]._f[w] = SilenceNaN(a);
else if (std::isnan(b)) else if (std::isnan(b))
CPU.VPR[vd]._f[w] = SilenceNaN(b); CPU.VPR[vd]._f[w] = SilenceNaN(b);
else if (a < b)
CPU.VPR[vd]._f[w] = a;
else if (b < a)
CPU.VPR[vd]._f[w] = b;
else if (CPU.VPR[vb]._u32[w] == 0x00000000)
CPU.VPR[vd]._f[w] = a; // min(-0,+0) = -0
else else
CPU.VPR[vd]._f[w] = std::min(a, b); CPU.VPR[vd]._f[w] = b;
} }
} }
void VMINSB(u32 vd, u32 va, u32 vb) //nf void VMINSB(u32 vd, u32 va, u32 vb) //nf