1 `/* Implementation of the MAXLOC intrinsic
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
3 Contributed by Thomas Koenig
5 This file is part of the GNU Fortran runtime library (libgfortran).
7 Libgfortran is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public
9 License as published by the Free Software Foundation; either
10 version 3 of the License, or (at your option) any later version.
12 Libgfortran is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 #include "libgfortran.h"
32 `#if defined (HAVE_'atype_name`) && defined (HAVE_'rtype_name`)
35 compare_fcn (const 'atype_name` *a, const 'atype_name` *b, gfc_charlen_type n)
37 if (sizeof ('atype_name`) == 1)
38 return memcmp (a, b, n);
40 return memcmp_char4 (a, b, n);
43 extern 'rtype_name` 'name`'rtype_qual`_'atype_code` ('atype` * const restrict'back_arg`,
45 export_proto('name`'rtype_qual`_'atype_code`);
48 'name`'rtype_qual`_'atype_code` ('atype` * const restrict array'back_arg`, gfc_charlen_type len)
53 const 'atype_name` *src;
54 const 'atype_name` *maxval;
57 extent = GFC_DESCRIPTOR_EXTENT(array,0);
61 sstride = GFC_DESCRIPTOR_STRIDE(array,0) * len;
64 src = array->base_addr;
66 for (i=1; i<=extent; i++)
68 if (maxval == NULL || (back ? compare_fcn (src, maxval, len) >= 0 :
69 compare_fcn (src, maxval, len) > 0))
79 extern 'rtype_name` m'name`'rtype_qual`_'atype_code` ('atype` * const restrict,
80 gfc_array_l1 *const restrict mask'back_arg`,
82 export_proto(m'name`'rtype_qual`_'atype_code`);
85 m'name`'rtype_qual`_'atype_code` ('atype` * const restrict array,
86 gfc_array_l1 * const restrict mask'back_arg`,
92 const 'atype_name` *src;
93 const 'atype_name` *maxval;
99 extent = GFC_DESCRIPTOR_EXTENT(array,0);
103 sstride = GFC_DESCRIPTOR_STRIDE(array,0) * len;
105 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
106 mbase = mask->base_addr;
108 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
109 #ifdef HAVE_GFC_LOGICAL_16
113 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
115 internal_error (NULL, "Funny sized logical array");
117 mstride = GFC_DESCRIPTOR_STRIDE_BYTES(mask,0);
119 /* Search for the first occurrence of a true element in mask. */
120 for (j=0; j<extent; j++)
131 src = array->base_addr + j * sstride;
134 for (i=j+1; i<=extent; i++)
136 if (*mbase && (back ? compare_fcn (src, maxval, len) >= 0 :
137 compare_fcn (src, maxval, len) > 0))
148 extern 'rtype_name` s'name`'rtype_qual`_'atype_code` ('atype` * const restrict,
149 GFC_LOGICAL_4 *mask'back_arg`, gfc_charlen_type);
150 export_proto(s'name`'rtype_qual`_'atype_code`);
153 s'name`'rtype_qual`_'atype_code` ('atype` * const restrict array,
154 GFC_LOGICAL_4 *mask'back_arg`, gfc_charlen_type len)
157 return 'name`'rtype_qual`_'atype_code` (array, len, back);