| 663 | #undef M |
| 664 | |
| 665 | static void optimize(te_expr *n) { |
| 666 | /* Evaluates as much as possible. */ |
| 667 | if (n->type == TE_CONSTANT) return; |
| 668 | if (n->type == TE_VARIABLE) return; |
| 669 | |
| 670 | /* Only optimize out functions flagged as pure. */ |
| 671 | if (IS_PURE(n->type)) { |
| 672 | const int arity = ARITY(n->type); |
| 673 | int known = 1; |
| 674 | int i; |
| 675 | for (i = 0; i < arity; ++i) { |
| 676 | optimize(n->parameters[i]); |
| 677 | if (((te_expr*)(n->parameters[i]))->type != TE_CONSTANT) { |
| 678 | known = 0; |
| 679 | } |
| 680 | } |
| 681 | if (known) { |
| 682 | const double value = te_eval(n); |
| 683 | te_free_parameters(n); |
| 684 | n->type = TE_CONSTANT; |
| 685 | n->value = value; |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | |
| 691 | te_expr *te_compile(const char *expression, const te_variable *variables, int var_count, int *error) { |
no test coverage detected