[Python-checkins] cpython (3.3): #12211: remove paragraph about NaNs

[andrew.kuchling]

http://hg.python.org/cpython/rev/b01f4ed077fa
changeset:   89215:b01f4ed077fa
branch:      3.3
parent:      89213:3ad7725b5013
user:        Andrew Kuchling <amk at amk.ca>
date:        Sun Feb 16 12:09:35 2014 -0500
summary:
  #12211: remove paragraph about NaNs

files:
  Doc/library/math.rst |  3 ---
  Modules/mathmodule.c |  4 +---
  2 files changed, 1 insertions(+), 6 deletions(-)


diff --git a/Doc/library/math.rst b/Doc/library/math.rst
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -40,9 +40,6 @@
    *y*.  On platforms that support signed zeros, ``copysign(1.0, -0.0)``
    returns *-1.0*.
 
-   If *x* is NaN, *y* is ignored and NaN is returned.  If *y* is NaN,
-   it is treated as positive: ``copysign(-1.0, NaN)`` returns 1.0.
-
 .. function:: fabs(x)
 
    Return the absolute value of *x*.
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -908,9 +908,7 @@
 FUNC2(copysign, copysign,
       "copysign(x, y)\n\nReturn a float with the magnitude (absolute value) "
       "of x but the sign \nof y. On platforms that support signed zeros, "
-      "copysign(1.0, -0.0) \nreturns -1.0.\n\n"
-      "If x is NaN, y is ignored and NaN is returned. If y is NaN, it is\n"
-      "treated as positive.")
+      "copysign(1.0, -0.0) \nreturns -1.0.\n")
 FUNC1(cos, cos, 0,
       "cos(x)\n\nReturn the cosine of x (measured in radians).")
 FUNC1(cosh, cosh, 1,

-- 
Repository URL: http://hg.python.org/cpython