Change parameter name from *x* for reals to *n* for integers. (pythonGH-32377)

Author: rhettinger

Doc/library/math.rst

@@ -66,9 +66,9 @@ Number-theoretic and representation functions
    Return the absolute value of *x*.
 
 
-.. function:: factorial(x)
+.. function:: factorial(n)
 
-   Return *x* factorial as an integer.  Raises :exc:`ValueError` if *x* is not integral or
+   Return *n* factorial as an integer.  Raises :exc:`ValueError` if *n* is not integral or
    is negative.
 
    .. deprecated:: 3.9

Modules/clinic/mathmodule.c.h

@@ -2093,17 +2093,17 @@ static const unsigned long SmallFactorials[] = {
 /*[clinic input]
 math.factorial
 
-    x as arg: object
+    n as arg: object
     /
 
-Find x!.
+Find n!.
 
 Raise a ValueError if x is negative or non-integral.
 [clinic start generated code]*/
 
 static PyObject *
 math_factorial(PyObject *module, PyObject *arg)
-/*[clinic end generated code: output=6686f26fae00e9ca input=6d1c8105c0d91fb4]*/
+/*[clinic end generated code: output=6686f26fae00e9ca input=713fb771677e8c31]*/
 {
     long x, two_valuation;
     int overflow;