Harmony: implement Math.cbrt, Math.expm1 and Math.log1p.

src/harmony-math.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 156 matching lines @@
   // Binary search.
   if ((x & 0xFFFF0000) === 0) { x <<= 16; result += 16; };
   if ((x & 0xFF000000) === 0) { x <<=  8; result +=  8; };
   if ((x & 0xF0000000) === 0) { x <<=  4; result +=  4; };
   if ((x & 0xC0000000) === 0) { x <<=  2; result +=  2; };
   if ((x & 0x80000000) === 0) { x <<=  1; result +=  1; };
   return result;
 }
 
 
+//ES6 draft 09-27-13, section 20.2.2.9.
+function MathCbrt(x) {
+  return %Math_cbrt(TO_NUMBER_INLINE(x));
+}
+
+
+//ES6 draft 09-27-13, section 20.2.2.14.
+function MathExpm1(x) {
+  return %Math_expm1(TO_NUMBER_INLINE(x));
+}
+
+
+//ES6 draft 09-27-13, section 20.2.2.20.
+function MathLog1p(x) {
+  return %Math_log1p(TO_NUMBER_INLINE(x));
+}
+
+
 function ExtendMath() {
   %CheckIsBootstrapping();
 
   // Set up the non-enumerable functions on the Math object.
   InstallFunctions($Math, DONT_ENUM, $Array(
     "sign", MathSign,
     "trunc", MathTrunc,
     "sinh", MathSinh,
     "cosh", MathCosh,
     "tanh", MathTanh,
     "asinh", MathAsinh,
     "acosh", MathAcosh,
     "atanh", MathAtanh,
     "log10", MathLog10,
     "log2", MathLog2,
     "hypot", MathHypot,
     "fround", MathFround,
-    "clz32", MathClz32
+    "clz32", MathClz32,
+    "cbrt", MathCbrt,
+    "log1p", MathLog1p,
+    "expm1", MathExpm1
   ));
 }
 
 
 ExtendMath();