From 34e73e4d7dfda9b37558e961428a1335291e0d23 Mon Sep 17 00:00:00 2001
From: jacob1 <jfu614@gmail.com>
Date: Thu, 5 Apr 2018 23:07:29 -0400
Subject: [PATCH] remove asin/acos because they aren't necessary and don't work

---
 data/TrigTables.h       | 1032 ---------------------------------------
 src/common/tpt-math.cpp |   28 +-
 2 files changed, 6 insertions(+), 1054 deletions(-)

diff --git a/data/TrigTables.h b/data/TrigTables.h
index fb99d450b..021453d1c 100644
--- a/data/TrigTables.h
+++ b/data/TrigTables.h
@@ -1545,1038 +1545,6 @@ const static float tanLookupTable[]
 	0.0
 };
 
-const static float asinLookupTable[]
-{
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-	-1.4457148032,
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-};
-
-const static float acosLookupTable[]
-{
-	3.14159265359,
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-	0.0
-};
-
 const static float atanLookupTable[]
 {
 	-1.52083793107,
diff --git a/src/common/tpt-math.cpp b/src/common/tpt-math.cpp
index d2a2e3c81..5d3b3dc11 100644
--- a/src/common/tpt-math.cpp
+++ b/src/common/tpt-math.cpp
@@ -1,6 +1,12 @@
 #include <cmath>
 #include "TrigTables.h"
 
+/**
+ * Fast trig functions, using lookup table
+ * Only use for things that require no accuracy, like cyclone tool
+ * Do not use for any core simulation stuff
+ */
+
 float orig_atan(float val)
 {
 	return atan(val);
@@ -48,28 +54,6 @@ float tan(float angle)
 	return tanLookupTable[i];
 }
 
-float asin(float angle)
-{
-	angle *= 81.4873;
-	if (angle > 256 || angle < 0)
-	{
-		return 0.0;
-	}
-
-	return asinLookupTable[(int)(angle + 256)];
-}
-
-float acos(float angle)
-{
-	angle *= 81.4873;
-	if (angle > 256 || angle < 0)
-	{
-		return 0.0;
-	}
-
-	return acosLookupTable[(int)(angle + 256)];
-}
-
 float atan(float ratio)
 {
 	if (ratio > 20)