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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdlib.h>
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long
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a64l (string)
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const char *string;
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{
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int cnt;
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long result = 0l;
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for (cnt = 0; cnt < 6; ++cnt)
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{
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result <<= 6;
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switch (string[cnt])
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{
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case '.':
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break;
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case '/':
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result |= 1;
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break;
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case '0' ... '9':
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result |= 2 + string[cnt] - '0';
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break;
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case 'A' ... 'Z':
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result |= 12 + string[cnt] - 'A';
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break;
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case 'a' ... 'z':
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result |= 38 + string[cnt] - 'a';
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break;
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default:
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return result >> 6;
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}
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}
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return result;
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}
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