gh-89381: Fix signature for math.log and cmath.log

Misc/NEWS.d/next/Library/2023-01-18-00-59-10.gh-issue-89381.AYHxIv.rst

@@ -0,0 +1 @@
+Fix signature for :func:`math.log` and :func:`cmath.log`.

Modules/cmathmodule.c

@@ -952,17 +952,17 @@ cmath_tanh_impl(PyObject *module, Py_complex z)
 cmath.log
 
     z as x: Py_complex
-    base as y_obj: object = NULL
+    base as y_obj: object(c_default="NULL") = cmath.e
     /
 
-log(z[, base]) -> the logarithm of z to the given base.
+Return the logarithm of z to the given base.
 
 If the base not specified, returns the natural logarithm (base e) of z.
 [clinic start generated code]*/
 
 static PyObject *
 cmath_log_impl(PyObject *module, Py_complex x, PyObject *y_obj)
-/*[clinic end generated code: output=4effdb7d258e0d94 input=230ed3a71ecd000a]*/
+/*[clinic end generated code: output=4effdb7d258e0d94 input=6783d68473d21cf3]*/
 {
     Py_complex y;
 

Modules/mathmodule.c

@@ -2366,9 +2366,7 @@ loghelper(PyObject* arg, double (*func)(double))
 math.log
 
     x:    object
-    [
     base: object(c_default="NULL") = math.e
-    ]
     /
 
 Return the logarithm of x to the given base.
@@ -2377,9 +2375,8 @@ If the base not specified, returns the natural logarithm (base e) of x.
 [clinic start generated code]*/
 
 static PyObject *
-math_log_impl(PyObject *module, PyObject *x, int group_right_1,
-              PyObject *base)
-/*[clinic end generated code: output=7b5a39e526b73fc9 input=0f62d5726cbfebbd]*/
+math_log_impl(PyObject *module, PyObject *x, PyObject *base)
+/*[clinic end generated code: output=1dead263cbb1e854 input=59b97db7030bb40b]*/
 {
     PyObject *num, *den;
     PyObject *ans;