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-rw-r--r--libpsn00b/psxgte/hisin.c33
1 files changed, 0 insertions, 33 deletions
diff --git a/libpsn00b/psxgte/hisin.c b/libpsn00b/psxgte/hisin.c
deleted file mode 100644
index 68d5d28..0000000
--- a/libpsn00b/psxgte/hisin.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Based on isin_S4 implementation from coranac:
- * http://www.coranac.com/2009/07/sines/
- *
- */
-
-#define qN 15
-#define qA 12
-#define B 19900
-#define C 3516
-
-int hisin(int x) {
-
- int c, x2, y;
-
- c= x<<(30-qN); // Semi-circle info into carry.
- x -= 1<<qN; // sine -> cosine calc
-
- x= x<<(31-qN); // Mask with PI
- x= x>>(31-qN); // Note: SIGNED shift! (to qN)
- x= x*x>>(2*qN-14); // x=x^2 To Q14
-
- y= B - (x*C>>14); // B - x^2*C
- y= (1<<qA)-(x*y>>16); // A - x^2*(B-x^2*C)
-
- return c>=0 ? y : -y;
-
-}
-
-int hicos(int x) {
-
- return hisin( x+32768 );
-
-}