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72
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1 module dmd.RealExp;
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2
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114
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3 import dmd.common;
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72
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4 import dmd.Expression;
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5 import dmd.backend.elem;
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6 import dmd.InterState;
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7 import dmd.Type;
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8 import dmd.OutBuffer;
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9 import dmd.Loc;
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10 import dmd.TOK;
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11 import dmd.Scope;
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0
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12 import dmd.IRState;
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72
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13 import dmd.Type;
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0
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14 import dmd.HdrGenState;
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15 import dmd.Port;
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16 import dmd.TY;
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72
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17
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0
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18 import dmd.backend.dt_t;
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19 import dmd.backend.Util;
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20 import dmd.backend.TYM;
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21 import dmd.backend.mTY;
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22
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72
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23 import dmd.Complex;
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24
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73
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25 import std.stdio;
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26
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0
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27 class RealExp : Expression
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28 {
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29 real value;
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30
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31 this(Loc loc, real value, Type type)
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32 {
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33 super(loc, TOK.TOKfloat64, RealExp.sizeof);
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34 //printf("RealExp.RealExp(%Lg)\n", value);
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35 this.value = value;
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36 this.type = type;
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37 }
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38
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72
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39 override bool equals(Object o)
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0
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40 {
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41 assert(false);
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42 }
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43
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72
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44 override Expression semantic(Scope sc)
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0
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45 {
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46 if (!type)
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47 type = Type.tfloat64;
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48 else
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49 type = type.semantic(loc, sc);
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50 return this;
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51 }
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52
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72
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53 override Expression interpret(InterState istate)
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0
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54 {
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55 assert(false);
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56 }
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57
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72
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58 override string toChars()
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0
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59 {
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60 assert(false);
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61 }
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62
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72
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63 override ulong toInteger()
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0
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64 {
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65 assert(false);
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66 }
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67
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72
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68 override ulong toUInteger()
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0
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69 {
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70 assert(false);
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71 }
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72
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72
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73 override real toReal()
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0
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74 {
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75 return type.isreal() ? value : 0;
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76 }
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77
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78 override real toImaginary()
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0
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79 {
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80 return type.isreal() ? 0 : value;
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81 }
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82
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72
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83 override Complex!(real) toComplex()
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0
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84 {
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85 return Complex!(real)(toReal(), toImaginary());
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86 }
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87
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72
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88 override Expression castTo(Scope sc, Type t)
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89 {
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90 Expression e = this;
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91 if (type != t)
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92 {
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93 if ((type.isreal() && t.isreal()) ||
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94 (type.isimaginary() && t.isimaginary())
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95 )
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96 {
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97 e = copy();
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98 e.type = t;
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99 }
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100 else
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101 e = Expression.castTo(sc, t);
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102 }
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103 return e;
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104 }
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105
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72
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106 override int isConst()
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0
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107 {
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108 return 1;
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109 }
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110
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72
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111 override bool isBool(bool result)
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0
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112 {
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123
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113 return result ? (value != 0) : (value == 0);
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114 }
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115
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72
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116 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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0
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117 {
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118 assert(false);
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119 }
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120
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72
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121 override void toMangleBuffer(OutBuffer buf)
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0
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122 {
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123 assert(false);
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124 }
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125
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72
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126 override elem* toElem(IRState* irs)
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0
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127 {
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128 eve c;
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129 tym_t ty;
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130
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131 //printf("RealExp.toElem(%p) %s\n", this, toChars());
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132 ///memset(&c, 0, sizeof(c));
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133 ty = type.toBasetype().totym();
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134 switch (tybasic(ty))
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135 {
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136 case TYfloat:
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137 case TYifloat:
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138 c.Vfloat = value;
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139 if (Port.isSignallingNan(value)) {
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140 std.stdio.writeln("signalling float");
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141 (cast(uint*)&c.Vfloat)[0] &= 0xFFBFFFFFL;
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142 }
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143 break;
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144
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145 case TYdouble:
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146 case TYidouble:
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147 c.Vdouble = value; // unfortunately, this converts SNAN to QNAN
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148 if (Port.isSignallingNan(value)) {
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149 std.stdio.writeln("signalling double");
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150 // Put SNAN back
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151 (cast(uint*)&c.Vdouble)[1] &= 0xFFF7FFFFL;
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152 }
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153 break;
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154
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155 case TYldouble:
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156 case TYildouble:
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157 c.Vldouble = value;
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158 break;
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159
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160 default:
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161 print();
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162 ///type.print();
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163 ///type.toBasetype().print();
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73
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164 printf("ty = %d, tym = %lx\n", type.ty, ty);
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0
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165 assert(0);
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166 }
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167 return el_const(ty, &c);
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168 }
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169
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170 static private char[6] zeropad;
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171
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72
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172 override dt_t** toDt(dt_t** pdt)
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0
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173 {
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174 float fvalue;
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175 double dvalue;
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176 real evalue;
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177
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178 //printf("RealExp.toDt(%Lg)\n", value);
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179 switch (type.toBasetype().ty)
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180 {
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181 case Tfloat32:
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182 case Timaginary32:
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183 fvalue = value;
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184 pdt = dtnbytes(pdt,4,cast(char*)&fvalue);
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185 break;
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186
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187 case Tfloat64:
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188 case Timaginary64:
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189 dvalue = value;
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190 pdt = dtnbytes(pdt,8,cast(char*)&dvalue);
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191 break;
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192
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193 case Tfloat80:
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194 case Timaginary80:
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195 evalue = value;
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196 pdt = dtnbytes(pdt,REALSIZE - REALPAD,cast(char*)&evalue);
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197 pdt = dtnbytes(pdt,REALPAD,zeropad.ptr);
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198 assert(REALPAD <= zeropad.sizeof);
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199 break;
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200
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201 default:
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202 writef("%s\n", toChars());
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203 ///type.print();
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204 assert(0);
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205 break;
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206 }
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207 return pdt;
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208 }
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209 }
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210
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