properly implement uitofp/sitofp using our existing code for that; fixes #745

2 files changed, 27 insertions, 1 deletions

diff --git a/src/parseTools.js b/src/parseTools.js
index 7387bf31..4a76a9a2 100644
--- a/src/parseTools.js
+++ b/src/parseTools.js
@@ -1750,7 +1750,7 @@ function processMathop(item) {
           }
         }
       }
-      case 'uitofp': case 'sitofp': return low1 + ' + ' + high1 + '*4294967296';
+      case 'uitofp': case 'sitofp': return RuntimeGenerator.makeBigInt(low1, high1, op[0] == 'u');
       case 'fptoui': case 'fptosi': return finish(splitI64(idents[0]));
       case 'icmp': {
         switch (variant) {
diff --git a/tests/runner.py b/tests/runner.py
index 08dec7b3..1480afe7 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -1083,6 +1083,32 @@ m_divisor is 1091269979
       '''
       self.do_run(src, '<=0')
 
+    def test_i64_qdouble(self):
+      if Settings.USE_TYPED_ARRAYS != 2: return self.skip('full i64 stuff only in ta2')
+
+      src = r'''
+        #include <stdio.h>
+        typedef long long qint64; /* 64 bit signed */
+        typedef double qreal;
+
+
+        int main(int argc, char **argv)
+        {
+          qreal c = 111;
+          qint64 d = -111 + (argc - 1);
+          c += d;
+          if (c < -1 || c > 1)
+          {
+                  printf("Failed!\n");
+          }
+          else
+          {
+                  printf("Succeeded!\n");
+          }
+        };
+      '''
+      self.do_run(src, 'Succeeded!')
+
     def test_i32_mul_precise(self):
       if self.emcc_args == None: return self.skip('needs ta2')