From ab1c32a6981e6742cb6c463c01ff59680c2ac773 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Thu, 25 Oct 2001 10:20:40 +0000
Subject: [PATCH] * stdlib/a64l.c: Expect least significant digit first.

* stdlib/l64a.c: Produce least significant digit first.
* stdlib/Makefile (tests): Add test-a64l.
* stdlib/test-a64l.c: New file.
---
 stdlib/Makefile    |  2 +-
 stdlib/a64l.c      |  5 ++--
 stdlib/l64a.c      |  7 +++--
 stdlib/test-a64l.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 82 insertions(+), 7 deletions(-)
 create mode 100644 stdlib/test-a64l.c

diff --git a/stdlib/Makefile b/stdlib/Makefile
index 0d4cc06..5c91f26 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -59,7 +59,7 @@ test-srcs	:= tst-fmtmsg
 tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv \
 		   test-canon test-canon2 tst-strtoll tst-environ	  \
 		   tst-xpg-basename tst-random tst-bsearch tst-limits	  \
-		   tst-rand48 bug-strtod tst-setcontext
+		   tst-rand48 bug-strtod tst-setcontext test-a64l
 
 
 # Several mpn functions from GNU MP are used by the strtod function.
diff --git a/stdlib/a64l.c b/stdlib/a64l.c
index 036e552..23faf27 100644
--- a/stdlib/a64l.c
+++ b/stdlib/a64l.c
@@ -43,6 +43,7 @@ a64l (string)
   const char *ptr = string;
   unsigned long int result = 0ul;
   const char *end = ptr + 6;
+  int shift = 0;
 
   do
     {
@@ -55,9 +56,9 @@ a64l (string)
       value = (int) a64l_table[index];
       if (value == (int) XX)
 	break;
-      result <<= 6;
       ++ptr;
-      result |= value;
+      result |= value << shift;
+      shift += 6;
     }
   while (ptr != end);
 
diff --git a/stdlib/l64a.c b/stdlib/l64a.c
index 958f8a0..f3a249f 100644
--- a/stdlib/l64a.c
+++ b/stdlib/l64a.c
@@ -47,13 +47,12 @@ l64a (n)
     /* The value for N == 0 is defined to be the empty string. */
     return (char *) "";
 
-  result[6] = '\0';
-
-  for (cnt = 5; m > 0ul; --cnt)
+  for (cnt = 0; m > 0ul; ++cnt)
     {
       result[cnt] = conv_table[m & 0x3f];
       m >>= 6;
     }
+  result[cnt] = '\0';
 
-  return &result[cnt + 1];
+  return result;
 }
diff --git a/stdlib/test-a64l.c b/stdlib/test-a64l.c
new file mode 100644
index 0000000..31ef5ea
--- /dev/null
+++ b/stdlib/test-a64l.c
@@ -0,0 +1,75 @@
+/* Test program for the l64a and a64l functions.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@suse.de>.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Prototype for our test function.  */
+extern int do_test (int argc, char *argv[]);
+#include <test-skeleton.c>
+
+struct a64l_test
+{
+  const char *base64;
+  long int value;
+};
+
+static const struct a64l_test tests[] =
+  {
+    { "./", 64 },
+    { "", 0 },
+    { "/", 1 },
+    { "FT", 2001 },
+    { NULL, 0 }
+  };
+
+int
+do_test (int argc, char ** argv)
+{
+  const struct a64l_test *at;
+  long int l;
+  const char *s;
+  int status = 0;
+
+  for (at = tests; at->base64 != NULL; ++at)
+    {
+      printf ("a64l (\"%s\")", at->base64);
+      l = a64l (at->base64);
+      if (l == at->value)
+	puts ("\tOK");
+      else
+	{
+	  printf ("\tBAD\n  returns %ld, expected %ld\n", l, at->value);
+	  status = 1;
+	}
+      printf ("l64a (%ld)", at->value);
+      s = l64a (at->value);
+      if (strcmp (s, at->base64) == 0)
+	puts ("\tOK");
+      else
+	{
+	  printf ("\tBAD\n  returns \"%s\", expected \"%s\"\n", s, at->base64);
+	  status = 1;
+	}
+    }
+
+  return status ? EXIT_FAILURE : EXIT_SUCCESS;
+}
-- 
2.7.4