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6cafb122fa
* gl/lib/strintcmp.c (strintcmp): Don’t assume that the input cannot contain ((char) -1), as this equals '\377' when char is signed (assuming 8-bit char). * src/sort.c (decimal_point): Now char, to make it clear that it’s always in char range now. (NON_CHAR): New constant. (traverse_raw_number): Return char not unsigned char; this is simpler and could be faster. All callers changed. (main): Do not convert decimal_point and thousands_sep to unsigned char, as this can mishandle comparisons on machines where char is signed and the input data contains ((char) -1). Use NON_CHAR, not -1, as an out-of-range value for thousands_sep.
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* Compare integer strings.
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Copyright (C) 2005-2021 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 3 of the License, or
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(at your option) any later version.
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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, see <https://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert. */
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#include <config.h>
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#include "strnumcmp-in.h"
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#include <limits.h>
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/* Compare strings A and B as integers without explicitly converting
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them to machine numbers, to avoid overflow problems and perhaps
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improve performance. */
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int
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strintcmp (char const *a, char const *b)
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{
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return numcompare (a, b, CHAR_MAX + 1, CHAR_MAX + 1);
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}
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