Fixed math.copysign() on Windows
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index 2c6262d..44a9d93 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -133,14 +133,16 @@
"cos(x)\n\nReturn the cosine of x (measured in radians).")
FUNC1(cosh, cosh,
"cosh(x)\n\nReturn the hyperbolic cosine of x.")
-#if defined(MS_WINDOWS) || defined(HAVE_COPYSIGN)
+
#ifdef MS_WINDOWS
-FUNC2(copysign, _copysign,
-#else
+# define copysign _copysign
+# define HAVE_COPYSIGN 1
+#endif
+#ifdef HAVE_COPYSIGN
FUNC2(copysign, copysign,
+ "copysign(x,y)\n\nReturn x with the sign of y.");
#endif
- "copysign(x,y)\n\nReturn x with the sign of y.");
-#endif
+
FUNC1(exp, exp,
"exp(x)\n\nReturn e raised to the power of x.")
FUNC1(fabs, fabs,
@@ -383,7 +385,7 @@
{"atan", math_atan, METH_O, math_atan_doc},
{"atan2", math_atan2, METH_VARARGS, math_atan2_doc},
{"ceil", math_ceil, METH_O, math_ceil_doc},
-#if defined(MS_WINDOWS) || defined(HAVE_COPYSIGN)
+#ifdef HAVE_COPYSIGN
{"copysign", math_copysign, METH_VARARGS, math_copysign_doc},
#endif
{"cos", math_cos, METH_O, math_cos_doc},