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111
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1 /* Implementation of the MAXVAL intrinsic
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131
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2 Copyright (C) 2002-2018 Free Software Foundation, Inc.
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111
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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_REAL_4) && defined (HAVE_GFC_REAL_4)
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30
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31
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32 extern void maxval_r4 (gfc_array_r4 * const restrict,
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33 gfc_array_r4 * const restrict, const index_type * const restrict);
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34 export_proto(maxval_r4);
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35
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36 void
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37 maxval_r4 (gfc_array_r4 * const restrict retarray,
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38 gfc_array_r4 * 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_REAL_4 * restrict base;
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46 GFC_REAL_4 * 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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131
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103 retarray->dtype.rank = rank;
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111
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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_REAL_4));
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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_REAL_4 * restrict src;
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144 GFC_REAL_4 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_REAL_4_INFINITY)
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149 result = -GFC_REAL_4_INFINITY;
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150 #else
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151 result = -GFC_REAL_4_HUGE;
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152 #endif
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153 if (len <= 0)
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154 *dest = -GFC_REAL_4_HUGE;
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155 else
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156 {
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131
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157 #if ! defined HAVE_BACK_ARG
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111
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158 for (n = 0; n < len; n++, src += delta)
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159 {
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131
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160 #endif
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111
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161
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162 #if defined (GFC_REAL_4_QUIET_NAN)
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163 if (*src >= result)
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164 break;
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165 }
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166 if (unlikely (n >= len))
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167 result = GFC_REAL_4_QUIET_NAN;
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168 else for (; n < len; n++, src += delta)
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169 {
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170 #endif
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171 if (*src > result)
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172 result = *src;
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173 }
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174
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175 *dest = result;
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176 }
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177 }
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178 /* Advance to the next element. */
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179 count[0]++;
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180 base += sstride[0];
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181 dest += dstride[0];
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182 n = 0;
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183 while (count[n] == extent[n])
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184 {
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185 /* When we get to the end of a dimension, reset it and increment
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186 the next dimension. */
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187 count[n] = 0;
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188 /* We could precalculate these products, but this is a less
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189 frequently used path so probably not worth it. */
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190 base -= sstride[n] * extent[n];
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191 dest -= dstride[n] * extent[n];
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192 n++;
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193 if (n >= rank)
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194 {
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195 /* Break out of the loop. */
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196 continue_loop = 0;
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197 break;
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198 }
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199 else
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200 {
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201 count[n]++;
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202 base += sstride[n];
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203 dest += dstride[n];
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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
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209
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210 extern void mmaxval_r4 (gfc_array_r4 * const restrict,
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211 gfc_array_r4 * const restrict, const index_type * const restrict,
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212 gfc_array_l1 * const restrict);
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213 export_proto(mmaxval_r4);
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214
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215 void
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216 mmaxval_r4 (gfc_array_r4 * const restrict retarray,
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217 gfc_array_r4 * const restrict array,
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218 const index_type * const restrict pdim,
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219 gfc_array_l1 * const restrict mask)
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220 {
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221 index_type count[GFC_MAX_DIMENSIONS];
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222 index_type extent[GFC_MAX_DIMENSIONS];
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223 index_type sstride[GFC_MAX_DIMENSIONS];
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224 index_type dstride[GFC_MAX_DIMENSIONS];
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225 index_type mstride[GFC_MAX_DIMENSIONS];
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226 GFC_REAL_4 * restrict dest;
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227 const GFC_REAL_4 * restrict base;
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228 const GFC_LOGICAL_1 * restrict mbase;
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229 index_type rank;
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230 index_type dim;
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231 index_type n;
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232 index_type len;
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233 index_type delta;
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234 index_type mdelta;
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235 int mask_kind;
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236
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237 dim = (*pdim) - 1;
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238 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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239
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240
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241 if (unlikely (dim < 0 || dim > rank))
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242 {
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243 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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244 "is %ld, should be between 1 and %ld",
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245 (long int) dim + 1, (long int) rank + 1);
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246 }
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247
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248 len = GFC_DESCRIPTOR_EXTENT(array,dim);
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249 if (len <= 0)
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250 return;
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251
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252 mbase = mask->base_addr;
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253
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254 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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255
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256 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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257 #ifdef HAVE_GFC_LOGICAL_16
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258 || mask_kind == 16
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259 #endif
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260 )
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261 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
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262 else
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263 runtime_error ("Funny sized logical array");
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264
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265 delta = GFC_DESCRIPTOR_STRIDE(array,dim);
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266 mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
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267
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268 for (n = 0; n < dim; n++)
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269 {
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270 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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271 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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272 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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273
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274 if (extent[n] < 0)
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275 extent[n] = 0;
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276
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277 }
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278 for (n = dim; n < rank; n++)
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279 {
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280 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
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281 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
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282 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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283
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284 if (extent[n] < 0)
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285 extent[n] = 0;
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286 }
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287
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288 if (retarray->base_addr == NULL)
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289 {
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290 size_t alloc_size, str;
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291
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292 for (n = 0; n < rank; n++)
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293 {
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294 if (n == 0)
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295 str = 1;
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296 else
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297 str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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298
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299 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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300
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301 }
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302
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303 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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304
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305 retarray->offset = 0;
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131
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306 retarray->dtype.rank = rank;
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111
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307
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308 if (alloc_size == 0)
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309 {
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310 /* Make sure we have a zero-sized array. */
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311 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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312 return;
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313 }
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314 else
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315 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_REAL_4));
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316
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317 }
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318 else
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319 {
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320 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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321 runtime_error ("rank of return array incorrect in MAXVAL intrinsic");
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322
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323 if (unlikely (compile_options.bounds_check))
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324 {
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325 bounds_ifunction_return ((array_t *) retarray, extent,
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326 "return value", "MAXVAL");
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327 bounds_equal_extents ((array_t *) mask, (array_t *) array,
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328 "MASK argument", "MAXVAL");
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329 }
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330 }
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331
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332 for (n = 0; n < rank; n++)
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333 {
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334 count[n] = 0;
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335 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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336 if (extent[n] <= 0)
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337 return;
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338 }
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339
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340 dest = retarray->base_addr;
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341 base = array->base_addr;
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342
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343 while (base)
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344 {
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345 const GFC_REAL_4 * restrict src;
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346 const GFC_LOGICAL_1 * restrict msrc;
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347 GFC_REAL_4 result;
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348 src = base;
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349 msrc = mbase;
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350 {
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351
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352 #if defined (GFC_REAL_4_INFINITY)
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353 result = -GFC_REAL_4_INFINITY;
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354 #else
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355 result = -GFC_REAL_4_HUGE;
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356 #endif
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357 #if defined (GFC_REAL_4_QUIET_NAN)
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358 int non_empty_p = 0;
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359 #endif
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360 for (n = 0; n < len; n++, src += delta, msrc += mdelta)
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361 {
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362
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363 #if defined (GFC_REAL_4_INFINITY) || defined (GFC_REAL_4_QUIET_NAN)
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364 if (*msrc)
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365 {
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366 #if defined (GFC_REAL_4_QUIET_NAN)
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367 non_empty_p = 1;
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368 if (*src >= result)
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369 #endif
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370 break;
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371 }
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372 }
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373 if (unlikely (n >= len))
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374 {
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375 #if defined (GFC_REAL_4_QUIET_NAN)
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376 result = non_empty_p ? GFC_REAL_4_QUIET_NAN : -GFC_REAL_4_HUGE;
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377 #else
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378 result = -GFC_REAL_4_HUGE;
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379 #endif
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380 }
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381 else for (; n < len; n++, src += delta, msrc += mdelta)
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382 {
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383 #endif
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384 if (*msrc && *src > result)
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385 result = *src;
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386 }
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387 *dest = result;
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388 }
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389 /* Advance to the next element. */
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390 count[0]++;
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391 base += sstride[0];
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392 mbase += mstride[0];
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393 dest += dstride[0];
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394 n = 0;
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395 while (count[n] == extent[n])
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396 {
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397 /* When we get to the end of a dimension, reset it and increment
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398 the next dimension. */
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399 count[n] = 0;
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400 /* We could precalculate these products, but this is a less
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401 frequently used path so probably not worth it. */
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402 base -= sstride[n] * extent[n];
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403 mbase -= mstride[n] * extent[n];
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404 dest -= dstride[n] * extent[n];
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405 n++;
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406 if (n >= rank)
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407 {
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408 /* Break out of the loop. */
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409 base = NULL;
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410 break;
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411 }
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412 else
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413 {
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414 count[n]++;
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415 base += sstride[n];
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416 mbase += mstride[n];
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417 dest += dstride[n];
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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
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423
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424 extern void smaxval_r4 (gfc_array_r4 * const restrict,
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425 gfc_array_r4 * const restrict, const index_type * const restrict,
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426 GFC_LOGICAL_4 *);
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427 export_proto(smaxval_r4);
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428
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429 void
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430 smaxval_r4 (gfc_array_r4 * const restrict retarray,
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431 gfc_array_r4 * const restrict array,
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432 const index_type * const restrict pdim,
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433 GFC_LOGICAL_4 * mask)
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434 {
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435 index_type count[GFC_MAX_DIMENSIONS];
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436 index_type extent[GFC_MAX_DIMENSIONS];
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437 index_type dstride[GFC_MAX_DIMENSIONS];
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438 GFC_REAL_4 * restrict dest;
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439 index_type rank;
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440 index_type n;
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441 index_type dim;
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442
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443
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444 if (*mask)
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445 {
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131
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446 #ifdef HAVE_BACK_ARG
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447 maxval_r4 (retarray, array, pdim, back);
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448 #else
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111
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449 maxval_r4 (retarray, array, pdim);
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131
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450 #endif
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111
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451 return;
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452 }
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453 /* Make dim zero based to avoid confusion. */
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454 dim = (*pdim) - 1;
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455 rank = GFC_DESCRIPTOR_RANK (array) - 1;
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456
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457 if (unlikely (dim < 0 || dim > rank))
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458 {
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459 runtime_error ("Dim argument incorrect in MAXVAL intrinsic: "
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460 "is %ld, should be between 1 and %ld",
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461 (long int) dim + 1, (long int) rank + 1);
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462 }
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463
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464 for (n = 0; n < dim; n++)
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465 {
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466 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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467
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468 if (extent[n] <= 0)
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469 extent[n] = 0;
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470 }
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471
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472 for (n = dim; n < rank; n++)
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473 {
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474 extent[n] =
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475 GFC_DESCRIPTOR_EXTENT(array,n + 1);
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476
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477 if (extent[n] <= 0)
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478 extent[n] = 0;
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479 }
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480
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481 if (retarray->base_addr == NULL)
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482 {
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483 size_t alloc_size, str;
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484
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485 for (n = 0; n < rank; n++)
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486 {
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487 if (n == 0)
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488 str = 1;
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489 else
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490 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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491
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492 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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493
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494 }
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495
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496 retarray->offset = 0;
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131
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497 retarray->dtype.rank = rank;
|
|
111
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498
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|
|
499 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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500
|
|
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501 if (alloc_size == 0)
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|
502 {
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|
|
503 /* Make sure we have a zero-sized array. */
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|
|
504 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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|
505 return;
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506 }
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507 else
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|
|
508 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_REAL_4));
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|
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509 }
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|
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510 else
|
|
|
511 {
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|
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512 if (rank != GFC_DESCRIPTOR_RANK (retarray))
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|
|
513 runtime_error ("rank of return array incorrect in"
|
|
|
514 " MAXVAL intrinsic: is %ld, should be %ld",
|
|
|
515 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
|
|
|
516 (long int) rank);
|
|
|
517
|
|
|
518 if (unlikely (compile_options.bounds_check))
|
|
|
519 {
|
|
|
520 for (n=0; n < rank; n++)
|
|
|
521 {
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|
|
522 index_type ret_extent;
|
|
|
523
|
|
|
524 ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
|
|
|
525 if (extent[n] != ret_extent)
|
|
|
526 runtime_error ("Incorrect extent in return value of"
|
|
|
527 " MAXVAL intrinsic in dimension %ld:"
|
|
|
528 " is %ld, should be %ld", (long int) n + 1,
|
|
|
529 (long int) ret_extent, (long int) extent[n]);
|
|
|
530 }
|
|
|
531 }
|
|
|
532 }
|
|
|
533
|
|
|
534 for (n = 0; n < rank; n++)
|
|
|
535 {
|
|
|
536 count[n] = 0;
|
|
|
537 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
|
|
|
538 }
|
|
|
539
|
|
|
540 dest = retarray->base_addr;
|
|
|
541
|
|
|
542 while(1)
|
|
|
543 {
|
|
|
544 *dest = -GFC_REAL_4_HUGE;
|
|
|
545 count[0]++;
|
|
|
546 dest += dstride[0];
|
|
|
547 n = 0;
|
|
|
548 while (count[n] == extent[n])
|
|
|
549 {
|
|
|
550 /* When we get to the end of a dimension, reset it and increment
|
|
|
551 the next dimension. */
|
|
|
552 count[n] = 0;
|
|
|
553 /* We could precalculate these products, but this is a less
|
|
|
554 frequently used path so probably not worth it. */
|
|
|
555 dest -= dstride[n] * extent[n];
|
|
|
556 n++;
|
|
|
557 if (n >= rank)
|
|
|
558 return;
|
|
|
559 else
|
|
|
560 {
|
|
|
561 count[n]++;
|
|
|
562 dest += dstride[n];
|
|
|
563 }
|
|
|
564 }
|
|
|
565 }
|
|
|
566 }
|
|
|
567
|
|
|
568 #endif
|
