From: Dale Weiler <killfieldengine@gmail.com>
Date: Wed, 31 Jul 2013 11:48:43 +0000 (+0000)
Subject: Fold for div op
X-Git-Tag: v0.3.0~51
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=b0460de935e2aba35acebf9f5b6184f2e2ab3337;p=xonotic%2Fgmqcc.git

Fold for div op
---

diff --git a/fold.c b/fold.c
index c7abaeb..98e854e 100644
--- a/fold.c
+++ b/fold.c
@@ -357,6 +357,22 @@ static GMQCC_INLINE ast_expression *fold_op_mul(fold_t *fold, ast_value *a, ast_
     return NULL;
 }
 
+static GMQCC_INLINE ast_expression *fold_op_div(fold_t *fold, ast_value *a, ast_value *b) {
+    if (isfloatonly(a)) {
+        return (fold_possible(a) && fold_possible(b))
+                    ? fold_constgen_float(fold, fold_immvalue_float(a) / fold_immvalue_float(b))
+                    : NULL;
+    }
+
+    if (isvectoronly(a)) {
+        if (fold_possible(a) && fold_possible(b))
+            return fold_constgen_vector(fold, vec3_mulvf(fold_immvalue_vector(a), 1.0f / fold_immvalue_float(b)));
+        else if (fold_possible(b))
+            return fold_constgen_float (fold, 1.0f / fold_immvalue_float(b));
+    }
+    return NULL;
+}
+
 ast_expression *fold_op(fold_t *fold, const oper_info *info, ast_expression **opexprs) {
     ast_value *a = (ast_value*)opexprs[0];
     ast_value *b = (ast_value*)opexprs[1];
@@ -423,7 +439,7 @@ ast_expression *fold_op(fold_t *fold, const oper_info *info, ast_expression **op
                  : NULL;
 
         case opid1('*'): return fold_op_mul(fold, a, b);
-        case opid1('/'):
+        case opid1('/'): return fold_op_div(fold, a, b);
             /* TODO: seperate function for this case */
             return NULL;
         case opid2('|','|'):