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36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/* Increase the size of a dynamic array and clear the new part.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <dynarray.h>
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#include <stdlib.h>
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#include <string.h>
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bool
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__libc_dynarray_resize_clear (struct dynarray_header *list, size_t size,
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void *scratch, size_t element_size)
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{
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size_t old_size = list->used;
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if (!__libc_dynarray_resize (list, size, scratch, element_size))
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return false;
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/* __libc_dynarray_resize already checked for overflow. */
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memset (list->array + (old_size * element_size), 0,
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(size - old_size) * element_size);
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return true;
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}
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libc_hidden_def (__libc_dynarray_resize_clear)
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