emscripten_random

2 files changed, 9 insertions, 0 deletions

diff --git a/src/library.js b/src/library.js
index cd18b566..cb94fccb 100644
--- a/src/library.js
+++ b/src/library.js
@@ -6203,6 +6203,10 @@ LibraryManager.library = {
     return eval(Pointer_stringify(ptr));
   },
 
+  emscripten_random: function() {
+    return Math.random();
+  },
+
   $Profiling: {
     max_: 0,
     times: null,
diff --git a/system/include/emscripten.h b/system/include/emscripten.h
index 4da31ec3..70524835 100644
--- a/system/include/emscripten.h
+++ b/system/include/emscripten.h
@@ -80,6 +80,11 @@ void emscripten_set_canvas_size(int width, int height);
 float emscripten_get_now();
 
 /*
+ * Simple random number generation in [0, 1), maps to Math.random().
+ */
+float emscripten_random();
+
+/*
  * This macro-looking function will cause Emscripten to
  * generate a comment in the generated code.
  * XXX This is deprecated for now, because it requires us to