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Fix vfpu_sin/vfpu_cos bug

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Was looking over VFPU stuff, and noticed this.
Presumably, on x86 the code was already doing exactly this, but still, ouch.

Did retest the code on all relevant (|x|>2^32) available inputs, all matches (except NaN payloads, as usual, but that is unrelated).
This commit is contained in:
fp64 2026-01-03 07:15:42 +02:00
parent f24c2ee9d6
commit ac22c45526
1 changed files with 2 additions and 2 deletions
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4
Core/MIPS/MIPSVFPUUtils.cpp
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@ -1091,7 +1091,7 @@ float vfpu_sin(float x) {
// There is weirdness for large exponents.
if(exponent - 0x7Fu >= 25u && exponent - 0x7Fu < 32u) significand = 0u;
else if((exponent & 0x9Fu) == 0x9Fu) significand = 0u;
else significand <<= (exponent - 0x7Fu);
else significand <<= ((exponent - 0x7Fu) & 31);
}
sign ^= ((significand << 7) & 0x80000000u);
significand &= 0x00FFFFFFu;
@ -1131,7 +1131,7 @@ float vfpu_cos(float x) {
// There is weirdness for large exponents.
if(exponent - 0x7Fu >= 25u && exponent - 0x7Fu < 32u) significand = 0u;
else if((exponent & 0x9Fu) == 0x9Fu) significand = 0u;
else significand <<= (exponent - 0x7Fu);
else significand <<= ((exponent - 0x7Fu) & 31);
}
sign ^= ((significand << 7) & 0x80000000u);
significand &= 0x00FFFFFFu;