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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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129
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4 import dmd.Complex;
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72
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5 import dmd.Expression;
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6 import dmd.backend.elem;
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7 import dmd.InterState;
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8 import dmd.Type;
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9 import dmd.OutBuffer;
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10 import dmd.Loc;
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11 import dmd.TOK;
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12 import dmd.Scope;
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0
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13 import dmd.IRState;
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72
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14 import dmd.Type;
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0
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15 import dmd.HdrGenState;
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16 import dmd.Port;
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17 import dmd.TY;
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72
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18
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129
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19 import dmd.expression.Util;
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20
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0
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21 import dmd.backend.dt_t;
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22 import dmd.backend.Util;
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23 import dmd.backend.TYM;
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24 import dmd.backend.mTY;
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25
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73
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26 import std.stdio;
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148
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27 import std.string;
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73
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28
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0
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29 class RealExp : Expression
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30 {
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31 real value;
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32
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33 this(Loc loc, real value, Type type)
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34 {
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35 super(loc, TOK.TOKfloat64, RealExp.sizeof);
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36 //printf("RealExp.RealExp(%Lg)\n", value);
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37 this.value = value;
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38 this.type = type;
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39 }
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40
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72
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41 override bool equals(Object o)
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0
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42 {
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129
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43 if (this is o)
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44 return true;
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45
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46 Expression e = cast(Expression)o;
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47 if (e.op == TOKfloat64) {
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48 RealExp ne = cast(RealExp)e;
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49 if (type.toHeadMutable().equals(ne.type.toHeadMutable())) {
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50 if (RealEquals(value, ne.value)) {
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51 return true;
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52 }
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53 }
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54 }
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55
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148
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56 return false;
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0
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57 }
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58
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72
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59 override Expression semantic(Scope sc)
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0
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60 {
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61 if (!type)
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62 type = Type.tfloat64;
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63 else
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64 type = type.semantic(loc, sc);
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65 return this;
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66 }
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67
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72
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68 override Expression interpret(InterState istate)
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0
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69 {
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148
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70 version(LOG)
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71 writef("RealExp::interpret() %s\n", toChars());
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72
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73 return this;
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0
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74 }
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75
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72
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76 override string toChars()
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0
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77 {
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148
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78 return format(type.isimaginary() ? "%gi" : "%g", value);
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0
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79 }
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80
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72
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81 override ulong toInteger()
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0
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82 {
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148
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83 version(IN_GCC)
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84 return toReal().toInt();
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85 else
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86 return cast(ulong) toReal();
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0
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87 }
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88
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72
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89 override ulong toUInteger()
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0
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90 {
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148
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91 version(IN_GCC)
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92 return cast(ulong) toReal().toInt();
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93 else
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94 return cast(ulong) toReal();
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0
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95 }
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96
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72
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97 override real toReal()
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0
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98 {
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99 return type.isreal() ? value : 0;
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100 }
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101
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72
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102 override real toImaginary()
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0
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103 {
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104 return type.isreal() ? 0 : value;
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105 }
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106
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72
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107 override Complex!(real) toComplex()
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0
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108 {
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109 return Complex!(real)(toReal(), toImaginary());
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110 }
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111
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72
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112 override Expression castTo(Scope sc, Type t)
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0
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113 {
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114 Expression e = this;
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115 if (type != t)
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116 {
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117 if ((type.isreal() && t.isreal()) ||
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118 (type.isimaginary() && t.isimaginary())
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119 )
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120 {
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121 e = copy();
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122 e.type = t;
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123 }
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124 else
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125 e = Expression.castTo(sc, t);
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126 }
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127 return e;
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128 }
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129
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72
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130 override int isConst()
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0
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131 {
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132 return 1;
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133 }
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134
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72
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135 override bool isBool(bool result)
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0
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136 {
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123
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137 return result ? (value != 0) : (value == 0);
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0
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138 }
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139
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72
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140 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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0
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141 {
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148
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142 floatToBuffer(buf, type, value);
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0
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143 }
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144
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72
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145 override void toMangleBuffer(OutBuffer buf)
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0
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146 {
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129
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147 buf.writeByte('e');
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148 realToMangleBuffer(buf, value);
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0
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149 }
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150
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72
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151 override elem* toElem(IRState* irs)
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0
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152 {
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153 eve c;
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154 tym_t ty;
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155
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156 //printf("RealExp.toElem(%p) %s\n", this, toChars());
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157 ///memset(&c, 0, sizeof(c));
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158 ty = type.toBasetype().totym();
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159 switch (tybasic(ty))
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160 {
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161 case TYfloat:
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162 case TYifloat:
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163 c.Vfloat = value;
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164 if (Port.isSignallingNan(value)) {
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165 std.stdio.writeln("signalling float");
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166 (cast(uint*)&c.Vfloat)[0] &= 0xFFBFFFFFL;
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167 }
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168 break;
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169
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170 case TYdouble:
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171 case TYidouble:
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172 c.Vdouble = value; // unfortunately, this converts SNAN to QNAN
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173 if (Port.isSignallingNan(value)) {
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174 std.stdio.writeln("signalling double");
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175 // Put SNAN back
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176 (cast(uint*)&c.Vdouble)[1] &= 0xFFF7FFFFL;
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177 }
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178 break;
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179
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180 case TYldouble:
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181 case TYildouble:
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182 c.Vldouble = value;
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183 break;
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184
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185 default:
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186 print();
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187 ///type.print();
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188 ///type.toBasetype().print();
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148
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189 printf("ty = %d, tym = %lx\n", type.ty, ty);
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0
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190 assert(0);
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191 }
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192 return el_const(ty, &c);
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193 }
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194
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170
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195 private enum char[6] zeropad = [0];
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0
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196
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72
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197 override dt_t** toDt(dt_t** pdt)
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0
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198 {
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199 float fvalue;
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200 double dvalue;
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201 real evalue;
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202
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203 //printf("RealExp.toDt(%Lg)\n", value);
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204 switch (type.toBasetype().ty)
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205 {
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206 case Tfloat32:
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207 case Timaginary32:
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208 fvalue = value;
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209 pdt = dtnbytes(pdt,4,cast(char*)&fvalue);
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210 break;
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211
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212 case Tfloat64:
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213 case Timaginary64:
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214 dvalue = value;
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215 pdt = dtnbytes(pdt,8,cast(char*)&dvalue);
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216 break;
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217
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218 case Tfloat80:
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219 case Timaginary80:
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220 evalue = value;
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221 pdt = dtnbytes(pdt,REALSIZE - REALPAD,cast(char*)&evalue);
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222 pdt = dtnbytes(pdt,REALPAD,zeropad.ptr);
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223 assert(REALPAD <= zeropad.sizeof);
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224 break;
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225
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226 default:
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227 writef("%s\n", toChars());
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228 ///type.print();
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229 assert(0);
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230 }
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231 return pdt;
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232 }
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148
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233 } |
