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111
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1 /* Implementation of the MAXVAL intrinsic
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2 Copyright (C) 2002-2017 Free Software Foundation, Inc.
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3 Contributed by Paul Brook <paul@nowt.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 <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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29 #if defined (HAVE_GFC_INTEGER_2) && defined (HAVE_GFC_INTEGER_2)
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30
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31
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32 extern void maxval_i2 (gfc_array_i2 * const restrict,
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33 gfc_array_i2 * const restrict, const index_type * const restrict);
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34 export_proto(maxval_i2);
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35
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36 void
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37 maxval_i2 (gfc_array_i2 * const restrict retarray,
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38 gfc_array_i2 * const restrict array,
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39 const index_type * const restrict pdim)
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40 {
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41 index_type count[GFC_MAX_DIMENSIONS];
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42 index_type extent[GFC_MAX_DIMENSIONS];
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43 index_type sstride[GFC_MAX_DIMENSIONS];
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44 index_type dstride[GFC_MAX_DIMENSIONS];
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45 const GFC_INTEGER_2 * restrict base;
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46 GFC_INTEGER_2 * restrict dest;
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47 index_type rank;
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48 index_type n;
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49 index_type len;
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50 index_type delta;
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51 index_type dim;
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52 int continue_loop;
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53
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54 /* Make dim zero based to avoid confusion. */
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55 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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56 dim = (*pdim) - 1;
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57
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58 if (unlikely (dim < 0 || dim > rank))
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59 {
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60 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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61 "is %ld, should be between 1 and %ld",
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62 (long int) dim + 1, (long int) rank + 1);
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63 }
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64
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65 len = GFC_DESCRIPTOR_EXTENT(array,dim);
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66 if (len < 0)
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67 len = 0;
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68 delta = GFC_DESCRIPTOR_STRIDE(array,dim);
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69
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70 for (n = 0; n < dim; n++)
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71 {
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72 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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73 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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74
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75 if (extent[n] < 0)
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76 extent[n] = 0;
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77 }
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78 for (n = dim; n < rank; n++)
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79 {
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80 sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
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81 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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82
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83 if (extent[n] < 0)
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84 extent[n] = 0;
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85 }
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86
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87 if (retarray->base_addr == NULL)
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88 {
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89 size_t alloc_size, str;
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90
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91 for (n = 0; n < rank; n++)
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92 {
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93 if (n == 0)
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94 str = 1;
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95 else
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96 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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97
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98 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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99
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100 }
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101
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102 retarray->offset = 0;
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103 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
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104
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105 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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106
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107 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_2));
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108 if (alloc_size == 0)
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109 {
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110 /* Make sure we have a zero-sized array. */
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111 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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112 return;
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113
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114 }
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115 }
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116 else
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117 {
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118 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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119 runtime_error ("rank of return array incorrect in"
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120 " MAXVAL intrinsic: is %ld, should be %ld",
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121 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
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122 (long int) rank);
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123
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124 if (unlikely (compile_options.bounds_check))
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125 bounds_ifunction_return ((array_t *) retarray, extent,
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126 "return value", "MAXVAL");
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127 }
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128
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129 for (n = 0; n < rank; n++)
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130 {
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131 count[n] = 0;
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132 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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133 if (extent[n] <= 0)
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134 return;
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135 }
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136
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137 base = array->base_addr;
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138 dest = retarray->base_addr;
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139
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140 continue_loop = 1;
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141 while (continue_loop)
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142 {
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143 const GFC_INTEGER_2 * restrict src;
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144 GFC_INTEGER_2 result;
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145 src = base;
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146 {
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147
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148 #if defined (GFC_INTEGER_2_INFINITY)
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149 result = -GFC_INTEGER_2_INFINITY;
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150 #else
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151 result = (-GFC_INTEGER_2_HUGE-1);
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152 #endif
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153 if (len <= 0)
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154 *dest = (-GFC_INTEGER_2_HUGE-1);
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155 else
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156 {
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157 for (n = 0; n < len; n++, src += delta)
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158 {
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159
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160 #if defined (GFC_INTEGER_2_QUIET_NAN)
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161 if (*src >= result)
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162 break;
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163 }
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164 if (unlikely (n >= len))
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165 result = GFC_INTEGER_2_QUIET_NAN;
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166 else for (; n < len; n++, src += delta)
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167 {
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168 #endif
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169 if (*src > result)
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170 result = *src;
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171 }
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172
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173 *dest = result;
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174 }
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175 }
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176 /* Advance to the next element. */
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177 count[0]++;
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178 base += sstride[0];
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179 dest += dstride[0];
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180 n = 0;
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181 while (count[n] == extent[n])
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182 {
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183 /* When we get to the end of a dimension, reset it and increment
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184 the next dimension. */
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185 count[n] = 0;
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186 /* We could precalculate these products, but this is a less
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187 frequently used path so probably not worth it. */
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188 base -= sstride[n] * extent[n];
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189 dest -= dstride[n] * extent[n];
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190 n++;
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191 if (n >= rank)
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192 {
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193 /* Break out of the loop. */
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194 continue_loop = 0;
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195 break;
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196 }
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197 else
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198 {
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199 count[n]++;
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200 base += sstride[n];
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201 dest += dstride[n];
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202 }
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203 }
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204 }
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205 }
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206
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207
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208 extern void mmaxval_i2 (gfc_array_i2 * const restrict,
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209 gfc_array_i2 * const restrict, const index_type * const restrict,
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210 gfc_array_l1 * const restrict);
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211 export_proto(mmaxval_i2);
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212
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213 void
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214 mmaxval_i2 (gfc_array_i2 * const restrict retarray,
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215 gfc_array_i2 * const restrict array,
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216 const index_type * const restrict pdim,
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217 gfc_array_l1 * const restrict mask)
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218 {
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219 index_type count[GFC_MAX_DIMENSIONS];
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220 index_type extent[GFC_MAX_DIMENSIONS];
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221 index_type sstride[GFC_MAX_DIMENSIONS];
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222 index_type dstride[GFC_MAX_DIMENSIONS];
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223 index_type mstride[GFC_MAX_DIMENSIONS];
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224 GFC_INTEGER_2 * restrict dest;
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225 const GFC_INTEGER_2 * restrict base;
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226 const GFC_LOGICAL_1 * restrict mbase;
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227 index_type rank;
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228 index_type dim;
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229 index_type n;
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230 index_type len;
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231 index_type delta;
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232 index_type mdelta;
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233 int mask_kind;
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234
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235 dim = (*pdim) - 1;
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236 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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237
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238
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239 if (unlikely (dim < 0 || dim > rank))
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240 {
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241 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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242 "is %ld, should be between 1 and %ld",
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243 (long int) dim + 1, (long int) rank + 1);
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244 }
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245
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246 len = GFC_DESCRIPTOR_EXTENT(array,dim);
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247 if (len <= 0)
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248 return;
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249
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250 mbase = mask->base_addr;
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251
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252 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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253
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254 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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255 #ifdef HAVE_GFC_LOGICAL_16
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256 || mask_kind == 16
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257 #endif
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258 )
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259 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
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260 else
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261 runtime_error ("Funny sized logical array");
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262
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263 delta = GFC_DESCRIPTOR_STRIDE(array,dim);
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264 mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
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265
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266 for (n = 0; n < dim; n++)
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267 {
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268 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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269 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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270 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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271
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272 if (extent[n] < 0)
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273 extent[n] = 0;
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274
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275 }
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276 for (n = dim; n < rank; n++)
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277 {
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278 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
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279 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
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280 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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281
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282 if (extent[n] < 0)
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283 extent[n] = 0;
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284 }
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285
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286 if (retarray->base_addr == NULL)
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287 {
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288 size_t alloc_size, str;
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289
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290 for (n = 0; n < rank; n++)
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291 {
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292 if (n == 0)
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293 str = 1;
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294 else
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295 str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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296
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297 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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298
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299 }
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300
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301 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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302
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303 retarray->offset = 0;
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304 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
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305
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306 if (alloc_size == 0)
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307 {
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308 /* Make sure we have a zero-sized array. */
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309 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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310 return;
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311 }
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312 else
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313 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_2));
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314
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315 }
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316 else
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317 {
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318 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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319 runtime_error ("rank of return array incorrect in MAXVAL intrinsic");
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320
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321 if (unlikely (compile_options.bounds_check))
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322 {
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323 bounds_ifunction_return ((array_t *) retarray, extent,
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324 "return value", "MAXVAL");
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325 bounds_equal_extents ((array_t *) mask, (array_t *) array,
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326 "MASK argument", "MAXVAL");
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327 }
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328 }
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329
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330 for (n = 0; n < rank; n++)
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331 {
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332 count[n] = 0;
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333 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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334 if (extent[n] <= 0)
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335 return;
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336 }
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337
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338 dest = retarray->base_addr;
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339 base = array->base_addr;
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340
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341 while (base)
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342 {
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343 const GFC_INTEGER_2 * restrict src;
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344 const GFC_LOGICAL_1 * restrict msrc;
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345 GFC_INTEGER_2 result;
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346 src = base;
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347 msrc = mbase;
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348 {
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349
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350 #if defined (GFC_INTEGER_2_INFINITY)
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351 result = -GFC_INTEGER_2_INFINITY;
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352 #else
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353 result = (-GFC_INTEGER_2_HUGE-1);
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354 #endif
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355 #if defined (GFC_INTEGER_2_QUIET_NAN)
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356 int non_empty_p = 0;
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357 #endif
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358 for (n = 0; n < len; n++, src += delta, msrc += mdelta)
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359 {
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360
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361 #if defined (GFC_INTEGER_2_INFINITY) || defined (GFC_INTEGER_2_QUIET_NAN)
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362 if (*msrc)
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363 {
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364 #if defined (GFC_INTEGER_2_QUIET_NAN)
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365 non_empty_p = 1;
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366 if (*src >= result)
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367 #endif
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368 break;
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369 }
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370 }
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371 if (unlikely (n >= len))
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372 {
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373 #if defined (GFC_INTEGER_2_QUIET_NAN)
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374 result = non_empty_p ? GFC_INTEGER_2_QUIET_NAN : (-GFC_INTEGER_2_HUGE-1);
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375 #else
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376 result = (-GFC_INTEGER_2_HUGE-1);
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377 #endif
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378 }
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379 else for (; n < len; n++, src += delta, msrc += mdelta)
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380 {
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381 #endif
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382 if (*msrc && *src > result)
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383 result = *src;
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384 }
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385 *dest = result;
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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 extern void smaxval_i2 (gfc_array_i2 * const restrict,
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423 gfc_array_i2 * const restrict, const index_type * const restrict,
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424 GFC_LOGICAL_4 *);
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425 export_proto(smaxval_i2);
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426
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427 void
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428 smaxval_i2 (gfc_array_i2 * const restrict retarray,
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429 gfc_array_i2 * const restrict array,
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430 const index_type * const restrict pdim,
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431 GFC_LOGICAL_4 * mask)
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432 {
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433 index_type count[GFC_MAX_DIMENSIONS];
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434 index_type extent[GFC_MAX_DIMENSIONS];
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435 index_type dstride[GFC_MAX_DIMENSIONS];
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436 GFC_INTEGER_2 * restrict dest;
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437 index_type rank;
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438 index_type n;
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439 index_type dim;
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440
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441
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442 if (*mask)
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443 {
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444 maxval_i2 (retarray, array, pdim);
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445 return;
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446 }
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447 /* Make dim zero based to avoid confusion. */
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448 dim = (*pdim) - 1;
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449 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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450
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451 if (unlikely (dim < 0 || dim > rank))
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452 {
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453 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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454 "is %ld, should be between 1 and %ld",
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455 (long int) dim + 1, (long int) rank + 1);
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456 }
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457
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458 for (n = 0; n < dim; n++)
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459 {
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460 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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461
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462 if (extent[n] <= 0)
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463 extent[n] = 0;
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464 }
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465
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466 for (n = dim; n < rank; n++)
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467 {
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468 extent[n] =
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469 GFC_DESCRIPTOR_EXTENT(array,n + 1);
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470
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471 if (extent[n] <= 0)
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472 extent[n] = 0;
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473 }
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474
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475 if (retarray->base_addr == NULL)
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476 {
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477 size_t alloc_size, str;
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478
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479 for (n = 0; n < rank; n++)
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480 {
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481 if (n == 0)
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482 str = 1;
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483 else
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484 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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485
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486 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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487
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488 }
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489
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490 retarray->offset = 0;
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491 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
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492
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493 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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494
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495 if (alloc_size == 0)
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496 {
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497 /* Make sure we have a zero-sized array. */
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498 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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499 return;
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500 }
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501 else
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502 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_2));
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503 }
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504 else
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505 {
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506 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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507 runtime_error ("rank of return array incorrect in"
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508 " MAXVAL intrinsic: is %ld, should be %ld",
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509 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
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510 (long int) rank);
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511
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512 if (unlikely (compile_options.bounds_check))
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513 {
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514 for (n=0; n < rank; n++)
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515 {
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516 index_type ret_extent;
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517
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518 ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
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519 if (extent[n] != ret_extent)
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520 runtime_error ("Incorrect extent in return value of"
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521 " MAXVAL intrinsic in dimension %ld:"
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522 " is %ld, should be %ld", (long int) n + 1,
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523 (long int) ret_extent, (long int) extent[n]);
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524 }
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525 }
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526 }
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527
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528 for (n = 0; n < rank; n++)
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529 {
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530 count[n] = 0;
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531 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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532 }
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533
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534 dest = retarray->base_addr;
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535
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536 while(1)
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537 {
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538 *dest = (-GFC_INTEGER_2_HUGE-1);
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539 count[0]++;
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540 dest += dstride[0];
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541 n = 0;
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542 while (count[n] == extent[n])
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543 {
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544 /* When we get to the end of a dimension, reset it and increment
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545 the next dimension. */
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546 count[n] = 0;
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547 /* We could precalculate these products, but this is a less
|
|
|
548 frequently used path so probably not worth it. */
|
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549 dest -= dstride[n] * extent[n];
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550 n++;
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551 if (n >= rank)
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|
552 return;
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|
553 else
|
|
|
554 {
|
|
|
555 count[n]++;
|
|
|
556 dest += dstride[n];
|
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|
557 }
|
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558 }
|
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559 }
|
|
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560 }
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561
|
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562 #endif
|
