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131
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1 /* Implementation of the MAXVAL intrinsic
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145
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2 Copyright (C) 2017-2020 Free Software Foundation, Inc.
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131
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3 Contributed by Thomas Koenig
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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 <http://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
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145
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29 #if defined (HAVE_GFC_UINTEGER_1) && defined (HAVE_GFC_UINTEGER_1)
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131
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30
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31 #include <string.h>
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32 #include <assert.h>
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33
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34 static inline int
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145
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35 compare_fcn (const GFC_UINTEGER_1 *a, const GFC_UINTEGER_1 *b, gfc_charlen_type n)
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131
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36 {
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145
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37 if (sizeof (GFC_UINTEGER_1) == 1)
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131
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38 return memcmp (a, b, n);
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39 else
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40 return memcmp_char4 (a, b, n);
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41 }
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42
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43 extern void maxval1_s1 (gfc_array_s1 * const restrict,
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44 gfc_charlen_type, gfc_array_s1 * const restrict,
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45 const index_type * const restrict, gfc_charlen_type);
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46 export_proto(maxval1_s1);
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47
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48 void
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49 maxval1_s1 (gfc_array_s1 * const restrict retarray,
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50 gfc_charlen_type xlen, gfc_array_s1 * const restrict array,
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51 const index_type * const restrict pdim, gfc_charlen_type string_len)
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52 {
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53 index_type count[GFC_MAX_DIMENSIONS];
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54 index_type extent[GFC_MAX_DIMENSIONS];
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55 index_type sstride[GFC_MAX_DIMENSIONS];
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56 index_type dstride[GFC_MAX_DIMENSIONS];
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145
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57 const GFC_UINTEGER_1 * restrict base;
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58 GFC_UINTEGER_1 * restrict dest;
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131
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59 index_type rank;
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60 index_type n;
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61 index_type len;
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62 index_type delta;
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63 index_type dim;
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64 int continue_loop;
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65
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66 assert (xlen == string_len);
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67 /* Make dim zero based to avoid confusion. */
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68 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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69 dim = (*pdim) - 1;
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70
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71 if (unlikely (dim < 0 || dim > rank))
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72 {
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73 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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74 "is %ld, should be between 1 and %ld",
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75 (long int) dim + 1, (long int) rank + 1);
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76 }
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77
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78 len = GFC_DESCRIPTOR_EXTENT(array,dim);
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79 if (len < 0)
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80 len = 0;
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81
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82 delta = GFC_DESCRIPTOR_STRIDE(array,dim) * string_len;
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83
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84 for (n = 0; n < dim; n++)
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85 {
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86 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n) * string_len;
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87 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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88
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89 if (extent[n] < 0)
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90 extent[n] = 0;
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91 }
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92 for (n = dim; n < rank; n++)
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93 {
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94 sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1) * string_len;
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95 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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96
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97 if (extent[n] < 0)
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98 extent[n] = 0;
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99 }
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100
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101 if (retarray->base_addr == NULL)
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102 {
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103 size_t alloc_size, str;
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104
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105 for (n = 0; n < rank; n++)
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106 {
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107 if (n == 0)
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108 str = 1;
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109 else
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110 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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111
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112 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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113
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114 }
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115
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116 retarray->offset = 0;
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117 retarray->dtype.rank = rank;
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118
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119 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]
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120 * string_len;
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121
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145
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122 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_UINTEGER_1));
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131
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123 if (alloc_size == 0)
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124 {
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125 /* Make sure we have a zero-sized array. */
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126 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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127 return;
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128
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129 }
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130 }
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131 else
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132 {
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133 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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134 runtime_error ("rank of return array incorrect in"
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135 " MAXVAL intrinsic: is %ld, should be %ld",
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136 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
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137 (long int) rank);
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138
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139 if (unlikely (compile_options.bounds_check))
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140 bounds_ifunction_return ((array_t *) retarray, extent,
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141 "return value", "MAXVAL");
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142 }
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143
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144 for (n = 0; n < rank; n++)
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145 {
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146 count[n] = 0;
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147 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n) * string_len;
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148 if (extent[n] <= 0)
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149 return;
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150 }
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151
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152 base = array->base_addr;
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153 dest = retarray->base_addr;
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154
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155 continue_loop = 1;
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156 while (continue_loop)
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157 {
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145
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158 const GFC_UINTEGER_1 * restrict src;
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131
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159 src = base;
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160 {
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161
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145
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162 const GFC_UINTEGER_1 *retval;
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131
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163 retval = base;
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164 if (len <= 0)
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165 memset (dest, 0, sizeof (*dest) * string_len);
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166 else
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167 {
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168 for (n = 0; n < len; n++, src += delta)
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169 {
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170
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171 if (compare_fcn (src, retval, string_len) > 0)
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172 {
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173 retval = src;
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174 }
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175 }
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176
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177 memcpy (dest, retval, sizeof (*dest) * string_len);
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178 }
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179 }
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180 /* Advance to the next element. */
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181 count[0]++;
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182 base += sstride[0];
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183 dest += dstride[0];
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184 n = 0;
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185 while (count[n] == extent[n])
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186 {
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187 /* When we get to the end of a dimension, reset it and increment
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188 the next dimension. */
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189 count[n] = 0;
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190 /* We could precalculate these products, but this is a less
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191 frequently used path so probably not worth it. */
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192 base -= sstride[n] * extent[n];
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193 dest -= dstride[n] * extent[n];
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194 n++;
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195 if (n >= rank)
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196 {
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197 /* Break out of the loop. */
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198 continue_loop = 0;
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199 break;
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200 }
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201 else
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202 {
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203 count[n]++;
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204 base += sstride[n];
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205 dest += dstride[n];
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206 }
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207 }
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208 }
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209 }
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210
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211
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212 extern void mmaxval1_s1 (gfc_array_s1 * const restrict,
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213 gfc_charlen_type, gfc_array_s1 * const restrict,
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214 const index_type * const restrict,
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215 gfc_array_l1 * const restrict, gfc_charlen_type);
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216 export_proto(mmaxval1_s1);
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217
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218 void
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219 mmaxval1_s1 (gfc_array_s1 * const restrict retarray,
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220 gfc_charlen_type xlen, gfc_array_s1 * const restrict array,
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221 const index_type * const restrict pdim,
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222 gfc_array_l1 * const restrict mask,
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223 gfc_charlen_type string_len)
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224
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225 {
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226 index_type count[GFC_MAX_DIMENSIONS];
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227 index_type extent[GFC_MAX_DIMENSIONS];
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228 index_type sstride[GFC_MAX_DIMENSIONS];
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229 index_type dstride[GFC_MAX_DIMENSIONS];
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230 index_type mstride[GFC_MAX_DIMENSIONS];
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145
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231 GFC_UINTEGER_1 * restrict dest;
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232 const GFC_UINTEGER_1 * restrict base;
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131
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233 const GFC_LOGICAL_1 * restrict mbase;
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234 index_type rank;
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235 index_type dim;
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236 index_type n;
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237 index_type len;
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238 index_type delta;
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239 index_type mdelta;
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240 int mask_kind;
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241
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145
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242 if (mask == NULL)
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243 {
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244 maxval1_s1 (retarray, xlen, array, pdim, string_len);
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245 return;
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246 }
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247
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131
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248 assert (xlen == string_len);
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249
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250 dim = (*pdim) - 1;
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251 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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252
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253 if (unlikely (dim < 0 || dim > rank))
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254 {
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255 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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256 "is %ld, should be between 1 and %ld",
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257 (long int) dim + 1, (long int) rank + 1);
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258 }
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259
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260 len = GFC_DESCRIPTOR_EXTENT(array,dim);
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261 if (len <= 0)
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262 return;
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263
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264 mbase = mask->base_addr;
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265
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266 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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267
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268 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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269 #ifdef HAVE_GFC_LOGICAL_16
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270 || mask_kind == 16
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271 #endif
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272 )
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273 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
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274 else
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275 runtime_error ("Funny sized logical array");
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276
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277 delta = GFC_DESCRIPTOR_STRIDE(array,dim) * string_len;
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278 mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
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279
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280 for (n = 0; n < dim; n++)
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281 {
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282 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n) * string_len;
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283 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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284 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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285
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286 if (extent[n] < 0)
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287 extent[n] = 0;
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288
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289 }
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290 for (n = dim; n < rank; n++)
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291 {
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292 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1) * string_len;
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293 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
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294 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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295
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296 if (extent[n] < 0)
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297 extent[n] = 0;
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298 }
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299
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300 if (retarray->base_addr == NULL)
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301 {
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302 size_t alloc_size, str;
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303
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304 for (n = 0; n < rank; n++)
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305 {
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306 if (n == 0)
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307 str = 1;
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308 else
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309 str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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310
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311 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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312
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313 }
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314
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315 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]
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316 * string_len;
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317
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318 retarray->offset = 0;
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319 retarray->dtype.rank = rank;
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320
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321 if (alloc_size == 0)
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322 {
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323 /* Make sure we have a zero-sized array. */
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324 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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325 return;
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326 }
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327 else
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145
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328 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_UINTEGER_1));
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131
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329
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330 }
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331 else
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332 {
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333 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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334 runtime_error ("rank of return array incorrect in MAXVAL intrinsic");
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335
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336 if (unlikely (compile_options.bounds_check))
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337 {
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338 bounds_ifunction_return ((array_t *) retarray, extent,
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339 "return value", "MAXVAL");
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340 bounds_equal_extents ((array_t *) mask, (array_t *) array,
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341 "MASK argument", "MAXVAL");
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342 }
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343 }
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344
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345 for (n = 0; n < rank; n++)
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346 {
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347 count[n] = 0;
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348 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n) * string_len;
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349 if (extent[n] <= 0)
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350 return;
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351 }
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352
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353 dest = retarray->base_addr;
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354 base = array->base_addr;
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355
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356 while (base)
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357 {
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145
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358 const GFC_UINTEGER_1 * restrict src;
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131
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359 const GFC_LOGICAL_1 * restrict msrc;
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360
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361 src = base;
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362 msrc = mbase;
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363 {
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364
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145
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365 const GFC_UINTEGER_1 *retval;
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131
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366 memset (dest, 0, sizeof (*dest) * string_len);
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367 retval = dest;
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368 for (n = 0; n < len; n++, src += delta, msrc += mdelta)
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369 {
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370
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371 if (*msrc)
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372 {
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373 retval = src;
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374 break;
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375 }
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376 }
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377 for (; n < len; n++, src += delta, msrc += mdelta)
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378 {
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379 if (*msrc && compare_fcn (src, retval, string_len) > 0)
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380 {
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381 retval = src;
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382 }
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383
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384 }
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385 memcpy (dest, retval, sizeof (*dest) * string_len);
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386 }
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387 /* Advance to the next element. */
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388 count[0]++;
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389 base += sstride[0];
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390 mbase += mstride[0];
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391 dest += dstride[0];
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392 n = 0;
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393 while (count[n] == extent[n])
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394 {
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395 /* When we get to the end of a dimension, reset it and increment
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396 the next dimension. */
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397 count[n] = 0;
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398 /* We could precalculate these products, but this is a less
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399 frequently used path so probably not worth it. */
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400 base -= sstride[n] * extent[n];
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401 mbase -= mstride[n] * extent[n];
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402 dest -= dstride[n] * extent[n];
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403 n++;
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404 if (n >= rank)
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405 {
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406 /* Break out of the loop. */
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407 base = NULL;
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408 break;
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409 }
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410 else
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411 {
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412 count[n]++;
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413 base += sstride[n];
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414 mbase += mstride[n];
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415 dest += dstride[n];
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416 }
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417 }
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418 }
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419 }
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420
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421
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422 void smaxval1_s1 (gfc_array_s1 * const restrict,
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423 gfc_charlen_type, gfc_array_s1 * const restrict,
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424 const index_type * const restrict,
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425 GFC_LOGICAL_4 *, gfc_charlen_type);
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426
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427 export_proto(smaxval1_s1);
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428
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429 void
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430 smaxval1_s1 (gfc_array_s1 * const restrict retarray,
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431 gfc_charlen_type xlen, gfc_array_s1 * const restrict array,
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432 const index_type * const restrict pdim,
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433 GFC_LOGICAL_4 *mask, gfc_charlen_type string_len)
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434
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435 {
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436 index_type count[GFC_MAX_DIMENSIONS];
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437 index_type extent[GFC_MAX_DIMENSIONS];
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438 index_type dstride[GFC_MAX_DIMENSIONS];
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145
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439 GFC_UINTEGER_1 * restrict dest;
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131
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440 index_type rank;
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441 index_type n;
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442 index_type dim;
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443
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444
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145
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445 if (mask == NULL || *mask)
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131
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446 {
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447 maxval1_s1 (retarray, xlen, array, pdim, string_len);
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448 return;
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449 }
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450 /* Make dim zero based to avoid confusion. */
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451 dim = (*pdim) - 1;
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452 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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453
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454 if (unlikely (dim < 0 || dim > rank))
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455 {
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456 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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457 "is %ld, should be between 1 and %ld",
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458 (long int) dim + 1, (long int) rank + 1);
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459 }
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460
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461 for (n = 0; n < dim; n++)
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462 {
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463 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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464
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465 if (extent[n] <= 0)
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466 extent[n] = 0;
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467 }
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468
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469 for (n = dim; n < rank; n++)
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|
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470 {
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|
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471 extent[n] =
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472 GFC_DESCRIPTOR_EXTENT(array,n + 1);
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473
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|
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474 if (extent[n] <= 0)
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475 extent[n] = 0;
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|
|
476 }
|
|
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477
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|
|
478 if (retarray->base_addr == NULL)
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|
|
479 {
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|
|
480 size_t alloc_size, str;
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|
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481
|
|
|
482 for (n = 0; n < rank; n++)
|
|
|
483 {
|
|
|
484 if (n == 0)
|
|
|
485 str = 1;
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|
|
486 else
|
|
|
487 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
|
|
|
488
|
|
|
489 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
|
|
|
490
|
|
|
491 }
|
|
|
492
|
|
|
493 retarray->offset = 0;
|
|
|
494 retarray->dtype.rank = rank;
|
|
|
495
|
|
|
496 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1]
|
|
|
497 * string_len;
|
|
|
498
|
|
|
499 if (alloc_size == 0)
|
|
|
500 {
|
|
|
501 /* Make sure we have a zero-sized array. */
|
|
|
502 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
|
|
|
503 return;
|
|
|
504 }
|
|
|
505 else
|
|
145
|
506 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_UINTEGER_1));
|
|
131
|
507 }
|
|
|
508 else
|
|
|
509 {
|
|
|
510 if (rank != GFC_DESCRIPTOR_RANK (retarray))
|
|
|
511 runtime_error ("rank of return array incorrect in"
|
|
|
512 " MAXVAL intrinsic: is %ld, should be %ld",
|
|
|
513 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
|
|
|
514 (long int) rank);
|
|
|
515
|
|
|
516 if (unlikely (compile_options.bounds_check))
|
|
|
517 {
|
|
|
518 for (n=0; n < rank; n++)
|
|
|
519 {
|
|
|
520 index_type ret_extent;
|
|
|
521
|
|
|
522 ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
|
|
|
523 if (extent[n] != ret_extent)
|
|
|
524 runtime_error ("Incorrect extent in return value of"
|
|
|
525 " MAXVAL intrinsic in dimension %ld:"
|
|
|
526 " is %ld, should be %ld", (long int) n + 1,
|
|
|
527 (long int) ret_extent, (long int) extent[n]);
|
|
|
528 }
|
|
|
529 }
|
|
|
530 }
|
|
|
531
|
|
|
532 for (n = 0; n < rank; n++)
|
|
|
533 {
|
|
|
534 count[n] = 0;
|
|
|
535 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n) * string_len;
|
|
|
536 }
|
|
|
537
|
|
|
538 dest = retarray->base_addr;
|
|
|
539
|
|
|
540 while(1)
|
|
|
541 {
|
|
|
542 memset (dest, 0, sizeof (*dest) * string_len);
|
|
|
543 count[0]++;
|
|
|
544 dest += dstride[0];
|
|
|
545 n = 0;
|
|
|
546 while (count[n] == extent[n])
|
|
|
547 {
|
|
|
548 /* When we get to the end of a dimension, reset it and increment
|
|
|
549 the next dimension. */
|
|
|
550 count[n] = 0;
|
|
|
551 /* We could precalculate these products, but this is a less
|
|
|
552 frequently used path so probably not worth it. */
|
|
|
553 dest -= dstride[n] * extent[n];
|
|
|
554 n++;
|
|
|
555 if (n >= rank)
|
|
|
556 return;
|
|
|
557 else
|
|
|
558 {
|
|
|
559 count[n]++;
|
|
|
560 dest += dstride[n];
|
|
|
561 }
|
|
|
562 }
|
|
|
563 }
|
|
|
564 }
|
|
|
565
|
|
|
566 #endif
|
