From 6b89aadfb5d7104bae2860c30bb682ae83625977 Mon Sep 17 00:00:00 2001
From: fp64 <106717720+fp64@users.noreply.github.com>
Date: Sun, 19 Feb 2023 02:30:17 -0500
Subject: [PATCH] Fix the sign of cos(2*n+1)

Also fix the license text.
---
 Core/MIPS/MIPSVFPUUtils.cpp | 3 +--
 Core/MIPS/vfpu_sin_lut.h    | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/Core/MIPS/MIPSVFPUUtils.cpp b/Core/MIPS/MIPSVFPUUtils.cpp
index e03badb91b1b..d6e62adb5175 100644
--- a/Core/MIPS/MIPSVFPUUtils.cpp
+++ b/Core/MIPS/MIPSVFPUUtils.cpp
@@ -993,7 +993,6 @@ float vfpu_sin(float x) {
 	return (sign ? -1.0f : +1.0f) * float(int32_t(ret)) * 3.7252903e-09f; // 0x1p-28f
 }
 
-// WARNING: not tested.
 float vfpu_cos(float x) {
 	uint32_t bits;
 	memcpy(&bits, &x, sizeof(x));
@@ -1022,7 +1021,7 @@ float vfpu_cos(float x) {
 	}
 	sign ^= ((significand << 7) & 0x80000000u);
 	significand &= 0x00FFFFFFu;
-	if(significand > 0x00800000u) {
+	if(significand >= 0x00800000u) {
 		significand = 0x01000000u - significand;
 		sign ^= 0x80000000u;
 	}
diff --git a/Core/MIPS/vfpu_sin_lut.h b/Core/MIPS/vfpu_sin_lut.h
index d2bec3021179..ba891c86abcc 100644
--- a/Core/MIPS/vfpu_sin_lut.h
+++ b/Core/MIPS/vfpu_sin_lut.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2012- PPSSPP Project.
+// Copyright (c) 2023- PPSSPP Project.
 
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by