61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
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* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>
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* Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU 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 any later version.
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*
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* This program 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 GNU
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* 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdlib.h>
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#include <ctype.h>
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/*
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* Despite being exactly the same as strtoul() except the long long instead of
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* long it ends up being much bigger so provide a separate implementation in a
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* separate object so that it won't be linked in if not used.
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*/
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unsigned long long strtoull ( const char *p, char **endp, int base ) {
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unsigned long long ret = 0;
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int negative = 0;
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unsigned int charval;
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while ( isspace ( *p ) )
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p++;
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if ( *p == '-' ) {
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negative = 1;
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p++;
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}
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base = strtoul_base ( &p, base );
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while ( 1 ) {
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charval = strtoul_charval ( *p );
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if ( charval >= ( unsigned int ) base )
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break;
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ret = ( ( ret * base ) + charval );
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p++;
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}
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if ( negative )
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ret = -ret;
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if ( endp )
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*endp = ( char * ) p;
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return ( ret );
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}
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