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Unified Diff: xz/src/liblzma/lzma/fastpos_tablegen.c

Issue 2869016: Add an unpatched version of xz, XZ Utils, to /trunk/deps/third_party (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/
Patch Set: Created 10 years, 6 months ago
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Index: xz/src/liblzma/lzma/fastpos_tablegen.c
===================================================================
--- xz/src/liblzma/lzma/fastpos_tablegen.c (revision 0)
+++ xz/src/liblzma/lzma/fastpos_tablegen.c (revision 0)
@@ -0,0 +1,56 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file fastpos_tablegen.c
+/// \brief Generates the lzma_fastpos[] lookup table
+///
+// Authors: Igor Pavlov
+// Lasse Collin
+//
+// This file has been put into the public domain.
+// You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <sys/types.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include "fastpos.h"
+
+
+int
+main(void)
+{
+ uint8_t fastpos[1 << FASTPOS_BITS];
+
+ const uint8_t fast_slots = 2 * FASTPOS_BITS;
+ uint32_t c = 2;
+
+ fastpos[0] = 0;
+ fastpos[1] = 1;
+
+ for (uint8_t slot_fast = 2; slot_fast < fast_slots; ++slot_fast) {
+ const uint32_t k = 1 << ((slot_fast >> 1) - 1);
+ for (uint32_t j = 0; j < k; ++j, ++c)
+ fastpos[c] = slot_fast;
+ }
+
+ printf("/* This file has been automatically generated "
+ "by fastpos_tablegen.c. */\n\n"
+ "#include \"common.h\"\n"
+ "#include \"fastpos.h\"\n\n"
+ "const uint8_t lzma_fastpos[1 << FASTPOS_BITS] = {");
+
+ for (size_t i = 0; i < (1 << FASTPOS_BITS); ++i) {
+ if (i % 16 == 0)
+ printf("\n\t");
+
+ printf("%3u", (unsigned int)(fastpos[i]));
+
+ if (i != (1 << FASTPOS_BITS) - 1)
+ printf(",");
+ }
+
+ printf("\n};\n");
+
+ return 0;
+}
Property changes on: xz/src/liblzma/lzma/fastpos_tablegen.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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