Mercurial > projects > ldc
annotate dmd2/builtin.c @ 953:5fa3e0ea06e9
Merged a bunch recent dmd v1 frontend changes into the dmd v2 tree.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Fri, 13 Feb 2009 22:20:30 +0100 |
parents | f04dde6e882c |
children | 638d16625da2 |
rev | line source |
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1 |
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2 // Compiler implementation of the D programming language |
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3 // Copyright (c) 1999-2007 by Digital Mars |
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4 // All Rights Reserved |
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5 // written by Walter Bright |
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6 // http://www.digitalmars.com |
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7 // License for redistribution is by either the Artistic License |
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8 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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9 // See the included readme.txt for details. |
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10 |
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11 #include <stdio.h> |
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12 #include <assert.h> |
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13 #include <math.h> |
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14 |
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15 #include "mars.h" |
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16 #include "declaration.h" |
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17 #include "attrib.h" |
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18 #include "expression.h" |
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19 #include "scope.h" |
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20 #include "mtype.h" |
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21 #include "aggregate.h" |
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22 #include "identifier.h" |
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23 #include "id.h" |
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24 #include "module.h" |
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25 |
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26 /********************************** |
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27 * Determine if function is a builtin one. |
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28 */ |
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29 enum BUILTIN FuncDeclaration::isBuiltin() |
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30 { |
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31 static const char FeZe[] = "FeZe"; // real function(real) |
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32 |
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33 //printf("FuncDeclaration::isBuiltin() %s\n", toChars()); |
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34 if (builtin == BUILTINunknown) |
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35 { |
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36 builtin = BUILTINnot; |
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37 if (parent && parent->isModule()) |
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38 { |
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39 if (parent->ident == Id::math && |
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40 parent->parent && parent->parent->ident == Id::std && |
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41 !parent->parent->parent) |
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42 { |
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43 if (strcmp(type->deco, FeZe) == 0) |
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44 { |
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45 if (ident == Id::sin) |
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46 builtin = BUILTINsin; |
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47 else if (ident == Id::cos) |
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48 builtin = BUILTINcos; |
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49 else if (ident == Id::tan) |
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50 builtin = BUILTINtan; |
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51 else if (ident == Id::_sqrt) |
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52 builtin = BUILTINsqrt; |
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53 else if (ident == Id::fabs) |
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54 builtin = BUILTINfabs; |
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55 //printf("builtin = %d\n", builtin); |
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56 } |
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57 } |
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58 } |
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59 } |
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60 return builtin; |
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61 } |
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62 |
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63 |
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64 /************************************** |
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65 * Evaluate builtin function. |
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66 * Return result; NULL if cannot evaluate it. |
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67 */ |
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68 |
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69 Expression *eval_builtin(enum BUILTIN builtin, Expressions *arguments) |
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70 { |
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71 assert(arguments && arguments->dim); |
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72 Expression *arg0 = (Expression *)arguments->data[0]; |
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73 Expression *e = NULL; |
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74 switch (builtin) |
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75 { |
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76 case BUILTINsin: |
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77 if (arg0->op == TOKfloat64) |
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78 e = new RealExp(0, sinl(arg0->toReal()), Type::tfloat80); |
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79 break; |
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80 |
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81 case BUILTINcos: |
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82 if (arg0->op == TOKfloat64) |
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83 e = new RealExp(0, cosl(arg0->toReal()), Type::tfloat80); |
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84 break; |
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85 |
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86 case BUILTINtan: |
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87 if (arg0->op == TOKfloat64) |
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88 e = new RealExp(0, tanl(arg0->toReal()), Type::tfloat80); |
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89 break; |
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90 |
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91 case BUILTINsqrt: |
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92 if (arg0->op == TOKfloat64) |
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93 e = new RealExp(0, sqrtl(arg0->toReal()), Type::tfloat80); |
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94 break; |
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95 |
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96 case BUILTINfabs: |
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97 if (arg0->op == TOKfloat64) |
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98 e = new RealExp(0, fabsl(arg0->toReal()), Type::tfloat80); |
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99 break; |
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100 } |
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101 return e; |
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102 } |