[Bug]: incompatible (wrt CPython 3.12) signatures for some integer math functions and int's methods

Describe the bug

Python 3.12.13 (tags/v3.12.13:3bb231a6a5d, May 14 2026, 11:06:30) [GCC 14.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import math, inspect
>>> for fn in ["comb", "factorial", "gcd", "isqrt", "lcm", "perm"]:
...     f = getattr(math, fn)
...     print(f, inspect.signature(f))
...
<built-in function comb> (n, k, /)
<built-in function factorial> (n, /)
<built-in function gcd> (*integers)
<built-in function isqrt> (n, /)
<built-in function lcm> (*integers)
<built-in function perm> (n, k=None, /)
>>> for meth in dir(int):
...     m = getattr(int, meth)
...     if meth.startswith("_") or not callable(m):
...         continue
...     try:
...         print(meth, inspect.signature(m))
...     except ValueError:
...         pass
...
as_integer_ratio (self, /)
bit_count (self, /)
bit_length (self, /)
from_bytes (bytes, byteorder='big', *, signed=False)
is_integer (self, /)
to_bytes (self, /, length=1, byteorder='big', *, signed=False)

In the GraalPy instead:

Python 3.12.8 (Tue Jun 23 15:17:16 UTC 2026)
[Graal, GraalVM CE, Java 25.0.3 (amd64)] on 'linux'
Type "help", "copyright", "credits" or "license" for more information.
>>> import math, inspect
>>> for fn in ["comb", "factorial", "gcd", "isqrt", "lcm", "perm"]:
...     f = getattr(math, fn)
...     print(f, inspect.signature(f))
...
<built-in function comb> (a, b, /)
<built-in function factorial> (a, /)
<built-in function gcd> (*args, **kwargs)
<built-in function isqrt> (a, /)
<built-in function lcm> (*args, **kwargs)
<built-in function perm> (n, k, /)
>>> for meth in dir(int):
...      m = getattr(int, meth)
...      if meth.startswith("_") or not callable(m):
...          continue
...      try:
...          print(meth, inspect.signature(m))
...      except ValueError:
...          pass
... 
as_integer_ratio (self, /)
bit_count (self, /)
bit_length (self, /)
conjugate (self, /)
from_bytes (bytes, byteorder, /, *, signed)
is_integer (self, /)
to_bytes (self, length, byteorder, /, *, signed)

As you can see, all present function signatures from the math module are different. Of course, most functions have positional-only arguments and naming differences aren't significant. But differences for gcd, lcm and perm - are. Same true for to_bytes/from_bytes methods: they lack default values and incorrectly specify positional-only arguments.

Though, I would appreciate if signatures will be fully compatible, including naming of positional-only parameters. The reason is that such naming is used in the Python prose docs, e.g. https://docs.python.org/3.12/library/math.html#math.comb. The GraalPy has no documentation like this for the stdlib.

Operating system

Linux

CPU architecture

x86_64

GraalPy version

25.1.3

JDK version

No response

Context configuration

No response

Steps to reproduce

See bug description.

Expected behavior

Match CPython.

Stack trace

Additional context

No response

Beginne damit, die GraalPy-Implementierungen oder Einstiegspunkte für math.comb, factorial, gcd, isqrt, lcm, perm und int.from_bytes/to_bytes zu finden. Führe die bereitgestellten inspect.signature-Vergleiche mit CPython aus; als erledigt gilt die Aufgabe, wenn Signaturen, Parameternamen, Standardwerte und Positions-only-Markierungen dem gemeldeten Verhalten von CPython 3.12 entsprechen.