bpo-39396: Fix math.nextafter(-0.0, +0.0) on AIX 7.1 (GH-18094)
Move also math.nextafter() on math.ulp() tests from IsCloseTests to
MathTests.
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index 81d8717..f012b51 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -3287,8 +3287,14 @@
math_nextafter_impl(PyObject *module, double x, double y)
/*[clinic end generated code: output=750c8266c1c540ce input=02b2d50cd1d9f9b6]*/
{
- double f = nextafter(x, y);
- return PyFloat_FromDouble(f);
+#if defined(_AIX)
+ if (x == y) {
+ /* On AIX 7.1, libm nextafter(-0.0, +0.0) returns -0.0.
+ Bug fixed in bos.adt.libm 7.2.2.0 by APAR IV95512. */
+ return PyFloat_FromDouble(y);
+ }
+#endif
+ return PyFloat_FromDouble(nextafter(x, y));
}