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annotate druntime/src/compiler/dmd/arrayreal.d @ 759:d3eb054172f9

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Added copy of druntime from DMD 2.020 modified for LDC.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 11 Nov 2008 01:52:37 +0100
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1 /***************************
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2 * D programming language http://www.digitalmars.com/d/
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3 * Runtime support for double array operations.
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4 * Placed in public domain.
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5 */
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6
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7 module rt.arrayreal;
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8
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9 import util.cpuid;
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10
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11 version (Unittest)
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12 {
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13 /* This is so unit tests will test every CPU variant
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14 */
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15 int cpuid;
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16 const int CPUID_MAX = 1;
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17 bool mmx() { return cpuid == 1 && util.cpuid.mmx(); }
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18 bool sse() { return cpuid == 2 && util.cpuid.sse(); }
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19 bool sse2() { return cpuid == 3 && util.cpuid.sse2(); }
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20 bool amd3dnow() { return cpuid == 4 && util.cpuid.amd3dnow(); }
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21 }
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22 else
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23 {
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24 alias util.cpuid.mmx mmx;
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25 alias util.cpuid.sse sse;
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26 alias util.cpuid.sse2 sse2;
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27 alias util.cpuid.amd3dnow amd3dnow;
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28 }
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29
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30 //version = log;
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31
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32 bool disjoint(T)(T[] a, T[] b)
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33 {
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34 return (a.ptr + a.length <= b.ptr || b.ptr + b.length <= a.ptr);
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35 }
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36
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37 alias real T;
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38
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39 extern (C):
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40
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41 /* ======================================================================== */
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42
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43 /***********************
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44 * Computes:
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45 * a[] = b[] + c[]
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46 */
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47
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48 T[] _arraySliceSliceAddSliceAssign_r(T[] a, T[] c, T[] b)
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49 in
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50 {
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51 assert(a.length == b.length && b.length == c.length);
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52 assert(disjoint(a, b));
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53 assert(disjoint(a, c));
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54 assert(disjoint(b, c));
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55 }
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56 body
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57 {
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58 for (int i = 0; i < a.length; i++)
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59 a[i] = b[i] + c[i];
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60 return a;
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61 }
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62
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63 unittest
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64 {
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65 printf("_arraySliceSliceAddSliceAssign_r unittest\n");
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66 for (cpuid = 0; cpuid < CPUID_MAX; cpuid++)
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67 {
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68 version (log) printf(" cpuid %d\n", cpuid);
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69
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70 for (int j = 0; j < 2; j++)
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71 {
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72 const int dim = 67;
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73 T[] a = new T[dim + j]; // aligned on 16 byte boundary
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74 a = a[j .. dim + j]; // misalign for second iteration
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75 T[] b = new T[dim + j];
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76 b = b[j .. dim + j];
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77 T[] c = new T[dim + j];
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78 c = c[j .. dim + j];
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79
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80 for (int i = 0; i < dim; i++)
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81 { a[i] = cast(T)i;
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82 b[i] = cast(T)(i + 7);
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83 c[i] = cast(T)(i * 2);
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84 }
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85
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86 c[] = a[] + b[];
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87
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88 for (int i = 0; i < dim; i++)
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89 {
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90 if (c[i] != cast(T)(a[i] + b[i]))
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91 {
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92 printf("[%d]: %Lg != %Lg + %Lg\n", i, c[i], a[i], b[i]);
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93 assert(0);
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94 }
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95 }
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96 }
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97 }
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98 }
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99
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100 /* ======================================================================== */
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101
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102 /***********************
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103 * Computes:
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104 * a[] = b[] - c[]
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105 */
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106
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107 T[] _arraySliceSliceMinSliceAssign_r(T[] a, T[] c, T[] b)
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108 in
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109 {
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110 assert(a.length == b.length && b.length == c.length);
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111 assert(disjoint(a, b));
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112 assert(disjoint(a, c));
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113 assert(disjoint(b, c));
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114 }
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115 body
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116 {
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117 for (int i = 0; i < a.length; i++)
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118 a[i] = b[i] - c[i];
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119 return a;
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120 }
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121
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122
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123 unittest
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124 {
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125 printf("_arraySliceSliceMinSliceAssign_r unittest\n");
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126 for (cpuid = 0; cpuid < CPUID_MAX; cpuid++)
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127 {
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128 version (log) printf(" cpuid %d\n", cpuid);
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129
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130 for (int j = 0; j < 2; j++)
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131 {
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132 const int dim = 67;
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133 T[] a = new T[dim + j]; // aligned on 16 byte boundary
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134 a = a[j .. dim + j]; // misalign for second iteration
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135 T[] b = new T[dim + j];
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136 b = b[j .. dim + j];
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137 T[] c = new T[dim + j];
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138 c = c[j .. dim + j];
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139
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140 for (int i = 0; i < dim; i++)
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141 { a[i] = cast(T)i;
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142 b[i] = cast(T)(i + 7);
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143 c[i] = cast(T)(i * 2);
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144 }
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145
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146 c[] = a[] - b[];
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147
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148 for (int i = 0; i < dim; i++)
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149 {
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150 if (c[i] != cast(T)(a[i] - b[i]))
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151 {
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152 printf("[%d]: %Lg != %Lg - %Lg\n", i, c[i], a[i], b[i]);
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153 assert(0);
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154 }
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155 }
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156 }
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157 }
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158 }
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159
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160 /* ======================================================================== */
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161
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162 /***********************
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163 * Computes:
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164 * a[] -= b[] * value
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165 */
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166
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167 T[] _arraySliceExpMulSliceMinass_r(T[] a, T value, T[] b)
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168 {
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169 return _arraySliceExpMulSliceAddass_r(a, -value, b);
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170 }
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171
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172 /***********************
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173 * Computes:
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174 * a[] += b[] * value
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175 */
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176
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177 T[] _arraySliceExpMulSliceAddass_r(T[] a, T value, T[] b)
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178 in
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179 {
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180 assert(a.length == b.length);
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181 assert(disjoint(a, b));
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182 }
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183 body
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184 {
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185 auto aptr = a.ptr;
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186 auto aend = aptr + a.length;
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187 auto bptr = b.ptr;
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188
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189 // Handle remainder
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190 while (aptr < aend)
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191 *aptr++ += *bptr++ * value;
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192
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193 return a;
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194 }
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195
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196 unittest
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197 {
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198 printf("_arraySliceExpMulSliceAddass_r unittest\n");
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199
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200 cpuid = 1;
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201 {
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202 version (log) printf(" cpuid %d\n", cpuid);
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203
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204 for (int j = 0; j < 1; j++)
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205 {
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206 const int dim = 67;
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207 T[] a = new T[dim + j]; // aligned on 16 byte boundary
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208 a = a[j .. dim + j]; // misalign for second iteration
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209 T[] b = new T[dim + j];
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210 b = b[j .. dim + j];
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211 T[] c = new T[dim + j];
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212 c = c[j .. dim + j];
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213
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214 for (int i = 0; i < dim; i++)
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215 { a[i] = cast(T)i;
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216 b[i] = cast(T)(i + 7);
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217 c[i] = cast(T)(i * 2);
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218 }
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219
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220 b[] = c[];
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221 c[] += a[] * 6;
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222
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223 for (int i = 0; i < dim; i++)
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224 {
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225 //printf("[%d]: %Lg ?= %Lg + %Lg * 6\n", i, c[i], b[i], a[i]);
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226 if (c[i] != cast(T)(b[i] + a[i] * 6))
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227 {
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228 printf("[%d]: %Lg ?= %Lg + %Lg * 6\n", i, c[i], b[i], a[i]);
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229 assert(0);
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230 }
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231 }
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232 }
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233 }
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234 }