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-rw-r--r--libc/stdlib/a64l.c66
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;
+}