From b701f8a878b7c76a33d7c3540a4b5e9c6e6b31ac Mon Sep 17 00:00:00 2001 From: PilzAdam Date: Fri, 2 Nov 2012 16:24:57 +0100 Subject: [PATCH] Replace pow() with multiplikation to improve speed --- src/mapgen.cpp | 2 +- src/noise.cpp | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) 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){ -- 2.30.2