N K
working-est copy with class-based code. still open loop
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analoghalls6
by 
N K
Diff: fastmath.cpp
- Revision:
- 9:d3b70c15baa9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fastmath.cpp Fri Mar 06 19:12:53 2015 +0000
@@ -0,0 +1,21 @@
+#include "includes.h"
+#include "fastmath.h"
+#include "lut.h"
+
+float FastMath::FastSin(float theta) {
+ if (theta < 0.0f) theta += 360.0f;
+ if (theta >= 360.0f) theta -= 360.0f;
+ return 2.0f * sinetab[(int) theta] - 1.0f;
+}
+
+float FastMath::FastCos(float theta) {
+ return FastSin(90.0f - theta);
+}
+
+float FastMath::FastSin01(float theta) {
+ return FastSin(theta) * 0.5f + 0.5f;
+}
+
+float FastMath::FastCos01(float theta) {
+ return FastCos(theta) * 0.5f + 0.5f;
+}
\ No newline at end of file