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1 module dmd.expression.Mod;
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2
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3 import dmd.common;
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4 import dmd.Loc;
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5 import dmd.Type;
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6 import dmd.Expression;
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7 import dmd.IntegerExp;
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8 import dmd.RealExp;
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9 import dmd.ComplexExp;
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10 import dmd.Complex;
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11
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12 import core.stdc.math;
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13
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14 Expression Mod(Type type, Expression e1, Expression e2)
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15 {
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16 Expression e;
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17 Loc loc = e1.loc;
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18
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19 if (type.isfloating())
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20 {
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21 Complex!(real) c;
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22
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23 if (e2.type.isreal())
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24 {
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25 real r2 = e2.toReal();
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26 c = Complex!(real)(fmodl(e1.toReal(), r2), fmodl(e1.toImaginary(), r2));;
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27 }
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28 else if (e2.type.isimaginary())
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29 {
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30 real i2 = e2.toImaginary();
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31 c = Complex!(real)(fmodl(e1.toReal(), i2), fmodl(e1.toImaginary(), i2));
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32 }
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33 else
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34 assert(0);
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35
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36 if (type.isreal())
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37 e = new RealExp(loc, c.re, type);
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38 else if (type.isimaginary())
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39 e = new RealExp(loc, c.im, type);
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40 else if (type.iscomplex())
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41 e = new ComplexExp(loc, c, type);
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42 else
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43 assert(0);
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44 }
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45 else
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46 {
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47 long n1;
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48 long n2;
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49 long n;
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50
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51 n1 = e1.toInteger();
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52 n2 = e2.toInteger();
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53 if (n2 == 0)
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54 {
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55 e2.error("divide by 0");
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56 e2 = new IntegerExp(loc, 1, e2.type);
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57 n2 = 1;
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58 }
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59
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60 if (e1.type.isunsigned() || e2.type.isunsigned())
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61 n = (cast(ulong) n1) % (cast(ulong) n2);
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62 else
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63 n = n1 % n2;
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64
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65 e = new IntegerExp(loc, n, type);
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66 }
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67 return e;
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68 } |
