1 files changed, 96 insertions, 0 deletions
diff --git a/mpeglib/lib/splay/op.h b/mpeglib/lib/splay/op.h
new file mode 100644
index 00000000..a741e97b
--- /dev/null
+++ b/mpeglib/lib/splay/op.h
@@ -0,0 +1,96 @@
+/*
+  unrolled operations, for better Pentium FPU scheduling
+  Copyright (C) 2001  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+
+#ifndef __OP_H
+#define __OP_H
+
+/**
+   The Pentium has two pipelined FPUs which makes it possible
+   to do two operations in one cycle.
+   (If you are lucky)
+
+*/
+
+#define PTR_DIST (1024)
+
+#define OS r1=vp1[0] * dp[0]; \
+           r2=vp1[PTR_DIST-0] * dp[0]; \
+           dp++;
+
+#define XX1 vp1+=15;dp++;
+
+#define XX2 r1+=vp1[0] * dp[-1]; \
+	    r2+=vp1[PTR_DIST-0] * dp[-1];
+
+#define OP_END(val) vp1-=val;dp+=val;
+
+#define OP_END_1(vVal,dVal) vp1+=(vVal-dVal),dp+=dVal
+
+
+// this is OP_END(x);XX1; together:
+#define OP_END_2(vVal)      vp1+=(15-vVal),dp+=vVal+1
+
+
+// check this to test pipelining
+
+#define SCHEDULE1(op,r1,r2)       r1;op;r2;
+#define SCHEDULE2(op,r1,r2)       op;r1;r2;
+
+#define SCHEDULE(a,b,c)    SCHEDULE2(a,b,c);
+
+
+#define OP r1+=vp1[-1] * dp[0]; \
+	   r2+=vp1[PTR_DIST-1] * dp[0];
+
+
+
+#define OP2 SCHEDULE(OP   ,r1+=vp1[-2]  * dp[1] ,r2+=vp1[PTR_DIST-2]  *dp[1]);
+#define OP3 SCHEDULE(OP2  ,r1+=vp1[-3]  * dp[2] ,r2+=vp1[PTR_DIST-3]  *dp[2]);
+#define OP4 SCHEDULE(OP3  ,r1+=vp1[-4]  * dp[3] ,r2+=vp1[PTR_DIST-4]  *dp[3]);
+#define OP5 SCHEDULE(OP4  ,r1+=vp1[-5]  * dp[4] ,r2+=vp1[PTR_DIST-5]  *dp[4]);
+#define OP6 SCHEDULE(OP5  ,r1+=vp1[-6]  * dp[5] ,r2+=vp1[PTR_DIST-6]  *dp[5]);
+#define OP7 SCHEDULE(OP6  ,r1+=vp1[-7]  * dp[6] ,r2+=vp1[PTR_DIST-7]  *dp[6]);
+#define OP8 SCHEDULE(OP7  ,r1+=vp1[-8]  * dp[7] ,r2+=vp1[PTR_DIST-8]  *dp[7]);
+#define OP9 SCHEDULE(OP8  ,r1+=vp1[-9]  * dp[8] ,r2+=vp1[PTR_DIST-9]  *dp[8]);
+#define OP10 SCHEDULE(OP9 ,r1+=vp1[-10] * dp[9] ,r2+=vp1[PTR_DIST-10] *dp[9]);
+#define OP11 SCHEDULE(OP10,r1+=vp1[-11] * dp[10],r2+=vp1[PTR_DIST-11] *dp[10]);
+#define OP12 SCHEDULE(OP11,r1+=vp1[-12] * dp[11],r2+=vp1[PTR_DIST-12] *dp[11]);
+#define OP13 SCHEDULE(OP12,r1+=vp1[-13] * dp[12],r2+=vp1[PTR_DIST-13] *dp[12]);
+#define OP14 SCHEDULE(OP13,r1+=vp1[-14] * dp[13],r2+=vp1[PTR_DIST-14] *dp[13]);
+#define OP15 SCHEDULE(OP14,r1+=vp1[-15] * dp[14],r2+=vp1[PTR_DIST-15] *dp[14]);
+
+
+/*
+#define OP r1+=vp1[-1] * dp[0]; \
+	   r2+=vp2[-1] * dp[0];
+
+
+
+#define OP2 SCHEDULE(OP   ,r1+=vp1[-2]  * dp[1] ,r2+=vp2[-2]  * dp[1]);
+#define OP3 SCHEDULE(OP2  ,r1+=vp1[-3]  * dp[2] ,r2+=vp2[-3]  * dp[2]);
+#define OP4 SCHEDULE(OP3  ,r1+=vp1[-4]  * dp[3] ,r2+=vp2[-4]  * dp[3]);
+#define OP5 SCHEDULE(OP4  ,r1+=vp1[-5]  * dp[4] ,r2+=vp2[-5]  * dp[4]);
+#define OP6 SCHEDULE(OP5  ,r1+=vp1[-6]  * dp[5] ,r2+=vp2[-6]  * dp[5]);
+#define OP7 SCHEDULE(OP6  ,r1+=vp1[-7]  * dp[6] ,r2+=vp2[-7]  * dp[6]);
+#define OP8 SCHEDULE(OP7  ,r1+=vp1[-8]  * dp[7] ,r2+=vp2[-8]  * dp[7]);
+#define OP9 SCHEDULE(OP8  ,r1+=vp1[-9]  * dp[8] ,r2+=vp2[-9]  * dp[8]);
+#define OP10 SCHEDULE(OP9 ,r1+=vp1[-10] * dp[9] ,r2+=vp2[-10] * dp[9]);
+#define OP11 SCHEDULE(OP10,r1+=vp1[-11] * dp[10],r2+=vp2[-11] * dp[10]);
+#define OP12 SCHEDULE(OP11,r1+=vp1[-12] * dp[11],r2+=vp2[-12] * dp[11]);
+#define OP13 SCHEDULE(OP12,r1+=vp1[-13] * dp[12],r2+=vp2[-13] * dp[12]);
+#define OP14 SCHEDULE(OP13,r1+=vp1[-14] * dp[13],r2+=vp2[-14] * dp[13]);
+#define OP15 SCHEDULE(OP14,r1+=vp1[-15] * dp[14],r2+=vp2[-15] * dp[14]);
+*/
+
+#endif