From 3137885c363260e34b47d60a03a5464289ae796c Mon Sep 17 00:00:00 2001 From: Andrew Kuchling Date: Sun, 16 Feb 2014 12:09:35 -0500 Subject: [PATCH] #12211: remove paragraph about NaNs --- Doc/library/math.rst | 3 --- Modules/mathmodule.c | 4 +--- 2 files changed, 1 insertion(+), 6 deletions(-) diff --git a/Doc/library/math.rst b/Doc/library/math.rst index 00834090423..3c416720954 100644 --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -40,9 +40,6 @@ Number-theoretic and representation functions *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 index 00e2612fd3b..7f094ffb537 100644 --- a/Modules/mathmodule.c +++ b/Modules/mathmodule.c @@ -908,9 +908,7 @@ PyDoc_STRVAR(math_ceil_doc, 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,