59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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* Copyright © 2022 Rick Masters <grick23@gmail.com>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mes/lib.h>
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#include <ctype.h>
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long
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abtol (char const **p, int base)
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{
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char const *s = p[0];
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int i = 0;
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int sign_p = 0;
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int m = '0';
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if (base == 0)
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base = 10;
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while (isspace (s[0]) != 0)
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s = s + 1;
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if (s[0] != 0 && s[0] == '+')
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s = s + 1;
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if (s[0] != 0 && s[0] == '-')
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{
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sign_p = 1;
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s = s + 1;
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}
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while (isnumber (s[0], base) != 0)
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{
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i = i * base;
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if (s[0] > '9')
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m = 'a' - 10;
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else
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m = '0';
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i = i + s[0] - m;
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s = s + 1;
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}
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p[0] = s;
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if (sign_p != 0)
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return -i;
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return i;
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}
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