[pypy-commit] lang-js default: 15.8.2.16

[stepahn]

Author: Stephan <step...@stzal.com>
Branch: 
Changeset: r210:50dbd6e6a2a4
Date: 2012-05-22 18:12 +0200
http://bitbucket.org/pypy/lang-js/changeset/50dbd6e6a2a4/

Log:    15.8.2.16

diff --git a/js/builtins_math.py b/js/builtins_math.py
--- a/js/builtins_math.py
+++ b/js/builtins_math.py
@@ -20,6 +20,7 @@
     put_native_function(w_Math, 'pow', js_pow, params = ['x', 'y'])
     put_native_function(w_Math, 'sqrt', sqrt)
     put_native_function(w_Math, 'log', js_log, params = ['x'])
+    put_native_function(w_Math, 'sin', js_sin, params = ['x'])
 
     # 15.8.1
 
@@ -183,6 +184,19 @@
 
     return max(values)
 
+# 15.8.2.17
+def js_sin(this, args):
+    arg0 = get_arg(args, 0)
+    x = arg0.ToNumber()
+
+    if isnan(x) or isinf(x):
+        return NAN
+
+    if x < 0:
+        return NAN
+
+    return math.sin(x)
+
 import time
 from pypy.rlib import rrandom
 _random = rrandom.Random(int(time.time()))
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