64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOU_H_
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#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOU_H_
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#include <config.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include "attr.h"
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ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
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inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
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uintmax_t min, uintmax_t max, int *restrict status);
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inline uintmax_t
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strtou_(const char *s, char **restrict endp, int base,
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uintmax_t min, uintmax_t max, int *restrict status)
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{
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int e, st;
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char *end;
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uintmax_t n;
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if (endp == NULL)
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endp = &end;
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if (status == NULL)
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status = &st;
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if (base != 0 && (base < 2 || base > 36)) {
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*status = EINVAL;
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return MAX(min, 0);
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}
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e = errno;
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errno = 0;
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n = strtoumax(s, endp, base);
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if (*endp == s)
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*status = ECANCELED;
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else if (errno == ERANGE || n < min || n > max)
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*status = ERANGE;
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else if (**endp != '\0')
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*status = ENOTSUP;
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else
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*status = 0;
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errno = e;
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return MAX(min, MIN(max, n));
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}
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#endif // include guard
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