import a64l and l64a from glibc

1 files changed, 66 insertions, 0 deletions

diff --git a/libc/stdlib/a64l.c b/libc/stdlib/a64l.c
new file mode 100644
index 000000000..23faf2744
--- /dev/null
+++ b/libc/stdlib/a64l.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 1995, 1997, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.org>, August 1995.
+
+   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 <stdlib.h>
+
+#define TABLE_BASE 0x2e
+#define TABLE_SIZE 0x4d
+
+#define XX ((char)0x40)
+
+
+static const char a64l_table[TABLE_SIZE] =
+{
+  /* 0x2e */                                                           0,  1,
+  /* 0x30 */   2,  3,  4,  5,  6,  7,  8,  9, 10, 11, XX, XX, XX, XX, XX, XX,
+  /* 0x40 */  XX, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
+  /* 0x50 */  27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, XX, XX, XX, XX, XX,
+  /* 0x60 */  XX, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
+  /* 0x70 */  53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63
+};
+
+
+long int
+a64l (string)
+     const char *string;
+{
+  const char *ptr = string;
+  unsigned long int result = 0ul;
+  const char *end = ptr + 6;
+  int shift = 0;
+
+  do
+    {
+      unsigned index;
+      unsigned value;
+
+      index = *ptr - TABLE_BASE;
+      if ((unsigned int) index >= TABLE_SIZE)
+	break;
+      value = (int) a64l_table[index];
+      if (value == (int) XX)
+	break;
+      ++ptr;
+      result |= value << shift;
+      shift += 6;
+    }
+  while (ptr != end);
+
+  return (long int) result;
+}