From 74f93ca4fba387347f24fa5f97e2d02f18e58e45 Mon Sep 17 00:00:00 2001
From: drmortalwombat <90205530+drmortalwombat@users.noreply.github.com>
Date: Wed, 16 Nov 2022 20:51:07 +0100
Subject: [PATCH] Improve precision of float log function

---
 include/math.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/math.c b/include/math.c
index 3550da9..bbb6126 100644
--- a/include/math.c
+++ b/include/math.c
@@ -143,12 +143,12 @@ float exp(float f)
 	return s * x.f;
 }
 
-#define F_LOG_0 	-2.79423993
-#define F_LOG_1		5.05984692
-#define F_LOG_2		-3.49247429
-#define F_LOG_3		1.58181193
-#define F_LOG_4		-0.396821126
-#define F_LOG_5		0.041845518
+#define F_LOG_0 	-3.78712618	
+#define F_LOG_1		10.0957081
+#define F_LOG_2		-13.9747486
+#define F_LOG_3		12.7568806
+#define F_LOG_4		-6.48114552
+#define F_LOG_5		1.39045416
 
 float log(float f)
 {
@@ -162,8 +162,8 @@ float log(float f)
 	
 	x.f = f;
 	int	ei = x.i[1];
-	int ex = (ei >> 7) - 0x7f;	
-	x.i[1] = (ei & 0x007f) | 0x3f80;
+	int ex = (ei >> 7) - 0x7e;
+	x.i[1] = (ei & 0x007f) | 0x3f00;
 	
 	float	g = x.f;