[pypy-svn] r75747 - pypy/branch/fast-forward/pypy/module/math

[benjamin at codespeak.net]

Author: benjamin
Date: Fri Jul  2 00:08:48 2010
New Revision: 75747

Modified:
   pypy/branch/fast-forward/pypy/module/math/__init__.py
   pypy/branch/fast-forward/pypy/module/math/interp_math.py
Log:
add copysign, isinf, and isnan

Modified: pypy/branch/fast-forward/pypy/module/math/__init__.py
==============================================================================
--- pypy/branch/fast-forward/pypy/module/math/__init__.py	(original)
+++ pypy/branch/fast-forward/pypy/module/math/__init__.py	Fri Jul  2 00:08:48 2010
@@ -11,6 +11,7 @@
        'pi'             : 'interp_math.get(space).w_pi', 
        'pow'            : 'interp_math.pow',
        'cosh'           : 'interp_math.cosh',
+       'copysign'       : 'interp_math.copysign',
        'ldexp'          : 'interp_math.ldexp',
        'hypot'          : 'interp_math.hypot',
        'tan'            : 'interp_math.tan',
@@ -34,5 +35,7 @@
        'modf'           : 'interp_math.modf',
        'exp'            : 'interp_math.exp',
        'acos'           : 'interp_math.acos',
+       'isinf'          : 'interp_math.isinf',
+       'isnan'          : 'interp_math.isnan',
 }
 

Modified: pypy/branch/fast-forward/pypy/module/math/interp_math.py
==============================================================================
--- pypy/branch/fast-forward/pypy/module/math/interp_math.py	(original)
+++ pypy/branch/fast-forward/pypy/module/math/interp_math.py	Fri Jul  2 00:08:48 2010
@@ -1,5 +1,6 @@
-
 import math
+
+from pypy.rlib import rarithmetic
 from pypy.interpreter.error import OperationError
 from pypy.interpreter.gateway import ObjSpace, W_Root, NoneNotWrapped
 
@@ -46,6 +47,22 @@
     return space.wrap(r)
 math2._annspecialcase_ = 'specialize:arg(1)'
 
+def copysign(space, x, y):
+    """Return x with the sign of y."""
+    # No exceptions possible.
+    return space.wrap(rarithmetic.copysign(x, y))
+copysign.unwrap_spec = [ObjSpace, float, float]
+
+def isinf(space, x):
+    """Return True if x is infinity."""
+    return space.wrap(rarithmetic.isinf(x))
+isinf.unwrap_spec = [ObjSpace, float, float]
+
+def isnan(space, x):
+    """Return True if x is not a number."""
+    return space.wrap(rarithmetic.isnan(x))
+isnan.unwrap_spec = [ObjSpace, float, float]
+
 def pow(space, x, y):
     """pow(x,y)