--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/c/generate_clamp.pl Fri Jun 04 16:20:51 2010 +0100
@@ -0,0 +1,264 @@
+#!/usr/bin/perl
+#
+
+
+
+print <<EOF
+/* This file is autogenerated. Do not edit. */
+/*
+ * LIBOIL - Library of Optimized Inner Loops
+ * Copyright (c) 2005 David A. Schleef <ds\@schleef.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+
+#include <liboil/liboil.h>
+#include <liboil/liboilclasses.h>
+
+EOF
+;
+
+
+sub clamp_pointer
+{
+ my $kernel = shift;
+ my $type = shift;
+ my $low = 1;
+ my $high = 1;
+
+ ($kernel eq "clamphigh") and $low = 0;
+ ($kernel eq "clamplow") and $high = 0;
+
+ print <<EOF
+static void
+${kernel}_${type}_pointer (oil_type_${type} *dest, oil_type_${type} *src1,
+ int n
+EOF
+;
+
+ $low && print (" , oil_type_${type} *low\n");
+ $high && print (" , oil_type_${type} *high\n");
+
+ print <<EOF
+ )
+{
+ while (n) {
+ oil_type_${type} x = *src1;
+EOF
+;
+ ($low) and print (" if (x < *low) x = *low;\n");
+ ($high) and print (" if (x > *high) x = *high;\n");
+
+ print <<EOF
+ *dest = x;
+ dest++;
+ src1++;
+ n--;
+ }
+}
+OIL_DEFINE_IMPL (${kernel}_${type}_pointer, ${kernel}_${type});
+
+EOF
+;
+}
+
+sub clamp_unroll4
+{
+ my $kernel = shift;
+ my $type = shift;
+ my $low = 1;
+ my $high = 1;
+
+ ($kernel eq "clamphigh") and $low = 0;
+ ($kernel eq "clamplow") and $high = 0;
+
+ $proto = "";
+ $low and $proto .= ", oil_type_${type} *low";
+ $high and $proto .= ", oil_type_${type} *high";
+
+ $clamp = "";
+ $low and $clamp .= " if (x < *low) x = *low;\n";
+ $high and $clamp .= " if (x > *high) x = *high;\n";
+
+ print <<EOF
+static void
+${kernel}_${type}_unroll4 (oil_type_${type} *dest, oil_type_${type} *src,
+ int n $proto)
+{
+ oil_type_${type} x;
+ while (n&3) {
+ x = *src;
+$clamp
+ *dest = x;
+ dest++;
+ src++;
+ n--;
+ }
+ n >>= 2;
+ while (n) {
+ x = src[0];
+$clamp
+ dest[0] = x;
+ x = src[1];
+$clamp
+ dest[1] = x;
+ x = src[2];
+$clamp
+ dest[2] = x;
+ x = src[3];
+$clamp
+ dest[3] = x;
+ dest+=4;
+ src+=4;
+ n--;
+ }
+}
+OIL_DEFINE_IMPL (${kernel}_${type}_unroll4, ${kernel}_${type});
+
+EOF
+;
+}
+
+sub clamp_trick
+{
+ my $kernel = shift;
+ my $type = shift;
+ my $low = 1;
+ my $high = 1;
+
+ ($kernel eq "clamphigh") and $low = 0;
+ ($kernel eq "clamplow") and $high = 0;
+
+ $proto = "";
+ $low and $proto .= ", oil_type_${type} *low";
+ $high and $proto .= ", oil_type_${type} *high";
+
+ $clamp = "";
+ $low and $clamp .= " x = x - (((x-*low)>>31)&(x-*low));\n";
+ $high and $clamp .= " x = x + (((*high-x)>>31)&(*high-x));\n";
+
+ print <<EOF
+static void
+${kernel}_${type}_trick (oil_type_${type} *dest, oil_type_${type} *src,
+ int n $proto)
+{
+ int x;
+ while (n&3) {
+ x = *src;
+$clamp
+ *dest = x;
+ dest++;
+ src++;
+ n--;
+ }
+ n >>= 2;
+ while (n) {
+ x = src[0];
+$clamp
+ dest[0] = x;
+ x = src[1];
+$clamp
+ dest[1] = x;
+ x = src[2];
+$clamp
+ dest[2] = x;
+ x = src[3];
+$clamp
+ dest[3] = x;
+ dest+=4;
+ src+=4;
+ n--;
+ }
+}
+OIL_DEFINE_IMPL (${kernel}_${type}_trick, ${kernel}_${type});
+
+EOF
+;
+}
+
+
+clamp_pointer("clamp", "s8");
+clamp_pointer("clamp", "u8");
+clamp_pointer("clamp", "s16");
+clamp_pointer("clamp", "u16");
+clamp_pointer("clamp", "s32");
+clamp_pointer("clamp", "u32");
+
+clamp_unroll4("clamp", "s8");
+clamp_unroll4("clamp", "u8");
+clamp_unroll4("clamp", "s16");
+clamp_unroll4("clamp", "u16");
+clamp_unroll4("clamp", "s32");
+clamp_unroll4("clamp", "u32");
+
+clamp_trick("clamp", "s8");
+clamp_trick("clamp", "u8");
+clamp_trick("clamp", "s16");
+clamp_trick("clamp", "u16");
+
+clamp_pointer("clamphigh", "s8");
+clamp_pointer("clamphigh", "u8");
+clamp_pointer("clamphigh", "s16");
+clamp_pointer("clamphigh", "u16");
+clamp_pointer("clamphigh", "s32");
+clamp_pointer("clamphigh", "u32");
+
+clamp_unroll4("clamphigh", "s8");
+clamp_unroll4("clamphigh", "u8");
+clamp_unroll4("clamphigh", "s16");
+clamp_unroll4("clamphigh", "u16");
+clamp_unroll4("clamphigh", "s32");
+clamp_unroll4("clamphigh", "u32");
+
+clamp_trick("clamphigh", "s8");
+clamp_trick("clamphigh", "u8");
+clamp_trick("clamphigh", "s16");
+clamp_trick("clamphigh", "u16");
+
+clamp_pointer("clamplow", "s8");
+clamp_pointer("clamplow", "u8");
+clamp_pointer("clamplow", "s16");
+clamp_pointer("clamplow", "u16");
+clamp_pointer("clamplow", "s32");
+clamp_pointer("clamplow", "u32");
+
+clamp_unroll4("clamplow", "s8");
+clamp_unroll4("clamplow", "u8");
+clamp_unroll4("clamplow", "s16");
+clamp_unroll4("clamplow", "u16");
+clamp_unroll4("clamplow", "s32");
+clamp_unroll4("clamplow", "u32");
+
+clamp_trick("clamplow", "s8");
+clamp_trick("clamplow", "u8");
+clamp_trick("clamplow", "s16");
+clamp_trick("clamplow", "u16");
+
+exit 0;
+