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-rw-r--r--src/preamble.js2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/preamble.js b/src/preamble.js
index 503b09f1..b355f130 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -742,6 +742,8 @@ Module['writeArrayToMemory'] = writeArrayToMemory;
{{{ unSign }}}
{{{ reSign }}}
+if (!Math.imul) Math.imul = function(x, y) { return (x*y)|0 }; // # not a real polyfill since semantics not identical, but close and fast
+
// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like