Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 149 insertions, 0 deletions

diff --git a/REORG.TODO/locale/weight.h b/REORG.TODO/locale/weight.h
new file mode 100644
index 0000000000..0558123f34
--- /dev/null
+++ b/REORG.TODO/locale/weight.h
@@ -0,0 +1,149 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Ulrich Drepper, <drepper@cygnus.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _WEIGHT_H_
+#define _WEIGHT_H_	1
+
+#include <libc-diag.h>
+
+/* Find index of weight.  */
+static inline int32_t __attribute__ ((always_inline))
+findidx (const int32_t *table,
+	 const int32_t *indirect,
+	 const unsigned char *extra,
+	 const unsigned char **cpp, size_t len)
+{
+  int_fast32_t i = table[*(*cpp)++];
+  const unsigned char *cp;
+  const unsigned char *usrc;
+
+  if (i >= 0)
+    /* This is an index into the weight table.  Cool.  */
+    return i;
+
+  /* Oh well, more than one sequence starting with this byte.
+     Search for the correct one.  */
+  cp = &extra[-i];
+  usrc = *cpp;
+  --len;
+  while (1)
+    {
+      size_t nhere;
+
+      /* The first thing is the index.  */
+      i = *((const int32_t *) cp);
+      cp += sizeof (int32_t);
+
+      /* Next is the length of the byte sequence.  These are always
+	 short byte sequences so there is no reason to call any
+	 function (even if they are inlined).  */
+      nhere = *cp++;
+
+      if (i >= 0)
+	{
+	  /* It is a single character.  If it matches we found our
+	     index.  Note that at the end of each list there is an
+	     entry of length zero which represents the single byte
+	     sequence.  The first (and here only) byte was tested
+	     already.  */
+	  size_t cnt;
+
+	  /* With GCC 5.3 when compiling with -Os the compiler warns
+	     that seq2.back_us, which becomes usrc, might be used
+	     uninitialized.  This can't be true because we pass a length
+	     of -1 for len at the same time which means that this loop
+	     never executes.  */
+	  DIAG_PUSH_NEEDS_COMMENT;
+	  DIAG_IGNORE_Os_NEEDS_COMMENT (5, "-Wmaybe-uninitialized");
+	  for (cnt = 0; cnt < nhere && cnt < len; ++cnt)
+	    if (cp[cnt] != usrc[cnt])
+	      break;
+	  DIAG_POP_NEEDS_COMMENT;
+
+	  if (cnt == nhere)
+	    {
+	      /* Found it.  */
+	      *cpp += nhere;
+	      return i;
+	    }
+
+	  /* Up to the next entry.  */
+	  cp += nhere;
+	  if (!LOCFILE_ALIGNED_P (1 + nhere))
+	    cp += LOCFILE_ALIGN - (1 + nhere) % LOCFILE_ALIGN;
+	}
+      else
+	{
+	  /* This is a range of characters.  First decide whether the
+	     current byte sequence lies in the range.  */
+	  size_t cnt;
+	  size_t offset = 0;
+
+	  for (cnt = 0; cnt < nhere && cnt < len; ++cnt)
+	    if (cp[cnt] != usrc[cnt])
+	      break;
+
+	  if (cnt != nhere)
+	    {
+	      if (cnt == len || cp[cnt] > usrc[cnt])
+		{
+		  /* Cannot be in this range.  */
+		  cp += 2 * nhere;
+		  if (!LOCFILE_ALIGNED_P (1 + 2 * nhere))
+		    cp += (LOCFILE_ALIGN
+			   - (1 + 2 * nhere) % LOCFILE_ALIGN);
+		  continue;
+		}
+
+	      /* Test against the end of the range.  */
+	      for (cnt = 0; cnt < nhere; ++cnt)
+		if (cp[nhere + cnt] != usrc[cnt])
+		  break;
+
+	      if (cnt != nhere && cp[nhere + cnt] < usrc[cnt])
+		{
+		  /* Cannot be in this range.  */
+		  cp += 2 * nhere;
+		  if (!LOCFILE_ALIGNED_P (1 + 2 * nhere))
+		    cp += (LOCFILE_ALIGN
+			   - (1 + 2 * nhere) % LOCFILE_ALIGN);
+		  continue;
+		}
+
+	      /* This range matches the next characters.  Now find
+		 the offset in the indirect table.  */
+	      for (cnt = 0; cp[cnt] == usrc[cnt]; ++cnt);
+
+	      do
+		{
+		  offset <<= 8;
+		  offset += usrc[cnt] - cp[cnt];
+		}
+	      while (++cnt < nhere);
+	    }
+
+	  *cpp += nhere;
+	  return indirect[-i + offset];
+	}
+    }
+
+  /* NOTREACHED */
+  return 0x43219876;
+}
+
+#endif	/* weight.h */