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/* A more useful interface to strtol.
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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This program 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
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GNU General Public License for more details.
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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 Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Jim Meyering. */
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# define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
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# define LONG_MAX ((long int) (ULONG_MAX >> 1))
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#define BKM_SCALE(x, scale_factor, error_return) \
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if ((x) > (double) __ZLONG_MAX / (scale_factor)) \
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return (error_return); \
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(x) *= (scale_factor); \
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__unsigned long int __strtol ();
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__xstrtol (s, ptr, base, val, valid_suffixes)
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__unsigned long int *val;
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const char *valid_suffixes;
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__unsigned long int tmp;
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assert (0 <= base && base <= 36);
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p = (ptr ? ptr : &t_ptr);
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tmp = __strtol (s, p, base);
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return LONGINT_OVERFLOW;
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return LONGINT_INVALID;
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/* Let valid_suffixes == NULL mean `allow any suffix'. */
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/* FIXME: update all callers except the one in tail.c changing
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last parameter NULL to `""'. */
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if (!strchr (valid_suffixes, **p))
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return LONGINT_INVALID_SUFFIX_CHAR;
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BKM_SCALE (tmp, 512, LONGINT_OVERFLOW);
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BKM_SCALE (tmp, 1024, LONGINT_OVERFLOW);
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BKM_SCALE (tmp, 1024 * 1024, LONGINT_OVERFLOW);
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BKM_SCALE (tmp, 2, LONGINT_OVERFLOW);
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return LONGINT_INVALID_SUFFIX_CHAR;
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#ifdef TESTING_XSTRTO
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main (int argc, char** argv)
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program_name = argv[0];
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for (i=1; i<argc; i++)
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__unsigned long int val;
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s_err = __xstrtol (argv[i], &p, 0, &val, "bckmw");
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if (s_err == LONGINT_OK)
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printf ("%s->%lu (%s)\n", argv[i], val, p);
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STRTOL_FATAL_ERROR (argv[i], "arg", s_err);
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#endif /* TESTING_XSTRTO */