From 8bdad19e0effc584433918e11f28ce253e29fc93 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 24 Aug 2005 23:16:30 +0000 Subject: import a64l and l64a from glibc --- libc/stdlib/a64l.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 libc/stdlib/a64l.c (limited to 'libc/stdlib/a64l.c') 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 , 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 + +#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; +} -- cgit v1.2.3