live-bootstrap/sysa/mes-0.22/lib/mes/abtol.c
fosslinux 649d7b68dc Add mes and mescc-tools-extra
mescc-tools-extra contains two important tools:
- cp
- chmod

mes first builds itself from a mes 0.21 seed as used by guix, and then
builds a mes 0.22 and then mes 0.22 using that created mes 0.22.

It does /not/ use bootstrap.sh as we don't have a proper shell at this
point, it has been manually adapted for kaem.
2020-12-25 18:40:14 +11:00

50 lines
1.3 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mes/lib.h>
#include <ctype.h>
long
abtol (char const **p, int base)
{
char const *s = *p;
int i = 0;
int sign_p = 0;
if (!base)
base = 10;
while (isspace (*s))
s++;
if (*s && *s == '+')
s++;
if (*s && *s == '-')
{
sign_p = 1;
s++;
}
while (isnumber (*s, base))
{
i *= base;
int m = *s > '9' ? 'a' - 10 : '0';
i += *s - m;
s++;
}
*p = s;
return sign_p ? -i : i;
}