Misc fixes

.github/workflows/build_wheels.yml

@@ -23,7 +23,7 @@ jobs:
           path-type: inherit
         if: ${{ matrix.os == 'windows-2022' }}
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.18.0
+        uses: pypa/cibuildwheel@v2.21.3
         env:
           CIBW_PRERELEASE_PYTHONS: True
           CIBW_SKIP: pp* *-win32

src/gmpy2_convert.h

@@ -150,7 +150,7 @@ extern "C" {
 #  define _PyLong_DigitCount(obj) (((PyLongObject*)obj)->long_value.lv_tag >> 3)
 #else
 #  define GET_OB_DIGIT(obj) obj->ob_digit
-#  define _PyLong_DigitCount(obj) (_PyLong_Sign(obj)<0 ? -Py_SIZE(obj):Py_SIZE(obj))
+#  define _PyLong_DigitCount(obj) (PyLong_IsNegative(obj) ? -Py_SIZE(obj):Py_SIZE(obj))
 #endif
 
 /* Since the macros are used in gmpy2's codebase, these functions are skipped

src/gmpy2_convert_gmp.c

@@ -34,6 +34,8 @@
  * some basic types such as C longs or doubles.
  */
 
+#include "pythoncapi_compat.h"
+
 /* ======================================================================== *
  * Conversion between native Python objects and MPZ.                        *
  * ======================================================================== */
@@ -42,13 +44,9 @@
 static void
 mpz_set_PyLong(mpz_t z, PyObject *obj)
 {
-    int negative;
-    Py_ssize_t len;
+    Py_ssize_t len = _PyLong_DigitCount(obj);
     PyLongObject *templong = (PyLongObject*)obj;
 
-    len = _PyLong_DigitCount(obj);
-    negative = _PyLong_Sign(obj) < 0;
-
     switch (len) {
     case 1:
         mpz_set_si(z, (sdigit)GET_OB_DIGIT(templong)[0]);
@@ -62,7 +60,7 @@ mpz_set_PyLong(mpz_t z, PyObject *obj)
                    GET_OB_DIGIT(templong));
     }
 
-    if (negative) {
+    if (PyLong_IsNegative(obj)) {
         mpz_neg(z, z);
     }
     return;