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145
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1 /* Implementation of the is_contiguous intrinsic.
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2 Copyright (C) 2019-2020 Free Software Foundation, Inc.
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3 Contributed by Thomas König <tkoenig@gcc.gnu.org>
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4
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5 This file is part of the GNU Fortran runtime library (libgfortran).
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6
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7 Libgfortran is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public
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9 License as published by the Free Software Foundation; either
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10 version 3 of the License, or (at your option) any later version.
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11
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12 Libgfortran is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <https://www.gnu.org/licenses/>. */
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25
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26 #include "libgfortran.h"
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27
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28 GFC_LOGICAL_4
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29 is_contiguous0 (const array_t * const restrict array)
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30 {
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31 index_type dim;
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32 index_type n;
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33 index_type extent, stride;
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34
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35 dim = GFC_DESCRIPTOR_RANK (array);
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36
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37 extent = 1;
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38 for (n = 0; n < dim; n++)
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39 {
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40 stride = GFC_DESCRIPTOR_STRIDE (array, n);
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41 if (stride != extent)
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42 return 0;
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43
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44 extent *= GFC_DESCRIPTOR_EXTENT (array, n);
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45 }
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46
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47 return 1;
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48 }
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49 iexport(is_contiguous0);
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