From: PilzAdam <adam-k@outlook.com>
Date: Fri, 2 Nov 2012 15:24:57 +0000 (+0100)
Subject: Replace pow() with multiplikation to improve speed
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=b701f8a878b7c76a33d7c3540a4b5e9c6e6b31ac;p=zefram%2Fminetest%2Fminetest_engine.git

Replace pow() with multiplikation to improve speed
---

diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index 67e92f44..77b13302 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -1228,7 +1228,7 @@ double base_rock_level_2d(u64 seed, v2s16 p)
 			0.5+(float)p.X/125., 0.5+(float)p.Y/125.,
 			seed-932, 5, 0.7);
 	b = rangelim(b, 0.0, 1000.0);
-	b = pow(b, 7);
+	b = b*b*b*b*b*b*b;
 	b *= 5;
 	b = rangelim(b, 0.5, 1000.0);
 	// Values 1.5...100 give quite horrible looking slopes
diff --git a/src/noise.cpp b/src/noise.cpp
index 4a7fc87e..e75fbf4b 100644
--- a/src/noise.cpp
+++ b/src/noise.cpp
@@ -37,7 +37,7 @@ double dotProduct(double vx, double vy, double wx, double wy){
 }
  
 double easeCurve(double t){
-    return 6*pow(t,5)-15*pow(t,4)+10*pow(t,3);
+    return t * t * t * (6. * t * t - 15. * t + 10.);
 }
  
 double linearInterpolation(double x0, double x1, double t){