From 0645f91289857c914e29eae63f45e7795aefb0fe Mon Sep 17 00:00:00 2001
From: Jonathan Young <young.jpc@gmail.com>
Date: Mon, 15 May 2017 02:28:37 +1000
Subject: [PATCH] Fix bx::flog2 giving incorrect result when compiled to
 asm.js. (#150)

---
 include/bx/inline/fpumath.inl | 5 -----
 src/fpumath.cpp               | 5 +++++
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/bx/inline/fpumath.inl b/include/bx/inline/fpumath.inl
index e87b827..e2959a1 100644
--- a/include/bx/inline/fpumath.inl
+++ b/include/bx/inline/fpumath.inl
@@ -136,11 +136,6 @@ namespace bx
 		return fpow(2.0f, _a);
 	}
 
-	inline float flog2(float _a)
-	{
-		return flog(_a) * 1.442695041f;
-	}
-
 	inline float frsqrt(float _a)
 	{
 		return 1.0f/fsqrt(_a);
diff --git a/src/fpumath.cpp b/src/fpumath.cpp
index e957ef9..c85ccc2 100644
--- a/src/fpumath.cpp
+++ b/src/fpumath.cpp
@@ -63,6 +63,11 @@ namespace bx
 		return ::logf(_a);
 	}
 
+	float flog2(float _a)
+	{
+		return ::logf(_a) * (1 / ::logf(2));
+	}
+
 	float fsqrt(float _a)
 	{
 		return ::sqrtf(_a);