Handle NaN in fselx. Fixes issue 4106.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7200 8ced0084-cf51-0410-be5f-012b33b47a6e
2011-02-19 09:56:54 +00:00 · 2011-02-19 09:56:54 +00:00 · 1f5d54f5a6
parent 050dcad9f8
commit 1f5d54f5a6
1 changed files with 3 additions and 1 deletions
--- a/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
+++ b/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
@ -242,7 +242,9 @@ void Interpreter::fnegx(UGeckoInstruction _inst)

 void Interpreter::fselx(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = (rPS0(_inst.FA) >= -0.0) ? rPS0(_inst.FC) : rPS0(_inst.FB);
+	// D = (A >= 0) ? C : B
+	rPS0(_inst.FD) = (rPS0(_inst.FA) < 0.0 || riPS0(_inst.FA) == PPC_NAN_U64) ?
+		rPS0(_inst.FB) : rPS0(_inst.FC);
 	// This is a binary instruction. Does not alter FPSCR
 	if (_inst.Rc) Helper_UpdateCR1(rPS0(_inst.FD));
 }