fix: use long long on Windows

.github/workflows/buildwheel.yml

@@ -6,6 +6,7 @@ jobs:
   build_wheels:
     name: Build wheels for ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
+    continue-on-error: true
     strategy:
       fail-fast: false
       matrix:
@@ -23,8 +24,10 @@ jobs:
         uses: pypa/[email protected]
         env:
           CIBW_BUILD: cp39-* cp310-* cp311-*
-          CIBW_SKIP: "*-win32 *-manylinux_i686 *-musllinux_*"
+          #CIBW_SKIP: "*-win32 *-manylinux_i686 *-musllinux_*"
+          CIBW_SKIP: "*-win32 *-musllinux_*"
           CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
+          CIBW_MANYLINUX_I686_IMAGE: manylinux2014
           CIBW_BEFORE_ALL_LINUX: bin/cibw_before_build_linux.sh
           CIBW_BEFORE_ALL_MACOS: bin/cibw_before_build_macosx.sh
           CIBW_BEFORE_BUILD: pip install numpy cython

.gitignore

@@ -1,9 +1,13 @@
 build/*
 dist/*
-src/*.c
+src/flint/*.c
 doc/build/*
 fmake*
 *.whl
+*.pyc
+*.pyd
+*.so
+__pycache__
 MANIFEST
 .eggs
 .local

bin/build_inplace.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+#
+# Build the flint._flint module in place.
+
+C_INCLUDE_PATH=.local/include/ LIBRARY_PATH=.local/lib/ python setup.py build_ext --inplace

bin/build_wheel.sh

@@ -5,37 +5,11 @@
 
 set -o errexit
 
-PYTHONFLINTVER=0.3.0
-
 source bin/build_variables.sh
 
 python3 -m venv $PREFIX/venv
 source $PREFIX/venv/bin/activate
-pip install -U pip wheel delocate
-pip install numpy cython
-# Working as of cython==0.29.28
+pip install -U pip
+pip install numpy cython wheel
 
 C_INCLUDE_PATH=.local/include/ LIBRARY_PATH=.local/lib/ pip wheel .
-
-wheelfinal=*.whl
-
-# On OSX bundle the dynamic libraries for the dependencies
-mkdir -p wheelhouse
-delocate-wheel -w wheelhouse $wheelfinal
-
-echo ------------------------------------------
-echo
-echo Built wheel: wheelhouse/$wheelfinal
-echo
-echo Link dependencies:
-delocate-listdeps wheelhouse/$wheelfinal
-echo
-pip install wheelhouse/$wheelfinal
-echo
-echo Demonstration:
-echo
-python -c 'import flint; print("(3/2)**2 =", flint.fmpq(3, 2)**2)'
-echo
-echo Done!
-echo
-echo ------------------------------------------

src/flint/_flint.pxd

@@ -1,23 +1,34 @@
-# fixme!
-DEF FLINT_BITS = 64
+# _flint.pxd
+#
+# Define the contents of the Python, GMP, Flint and Arb headers.
 
 cdef extern from "Python.h":
     ctypedef void PyObject
     ctypedef void PyTypeObject
     ctypedef long Py_ssize_t
     int PyObject_TypeCheck(object, PyTypeObject*)
     int PyInt_Check(PyObject *o)
-    PyObject* PyInt_FromLong(long ival)
     int PyLong_Check(PyObject *o)
     long PyInt_AS_LONG(PyObject *io)
     double PyFloat_AS_DOUBLE(PyObject *io)
     Py_ssize_t PyList_GET_SIZE(PyObject *list)
     long PyLong_AsLongAndOverflow(PyObject *pylong, int *overflow)
+    long long PyLong_AsLongLongAndOverflow(PyObject *pylong, int *overflow)
 
 DEF FMPZ_UNKNOWN = 0
 DEF FMPZ_REF = 1
 DEF FMPZ_TMP = 2
 
+#
+# Note: ulong and slong are used throughout Flint/Arb. They are expected to be
+# 32 bit unsigned and signed integer types on a 32 bit system and 64 bit on a
+# 64 bit system. We denote them as unsigned long and long here which would be
+# incorrect on 64 bit Windows but the definition here does not matter because
+# their actual sizes will be determined by the values from gmp.h and
+# flint/flint.h. Their size in bits (32 or 64) is recorded in the FLINT_BITS
+# macro which is defined in flint/flint.h.
+#
+
 cdef extern from "gmp.h":
     ctypedef unsigned long ulong
     ctypedef unsigned long mp_limb_t
@@ -27,18 +38,36 @@ cdef extern from "gmp.h":
     ctypedef mp_limb_t* mp_srcptr
     ctypedef unsigned long mp_bitcnt_t
 
-ctypedef long fmpz_struct
-ctypedef long slong
-ctypedef ulong flint_bitcnt_t
+cdef extern from "flint/fmpz.h":
+    ctypedef long slong
+    ctypedef ulong flint_bitcnt_t
+
+ctypedef slong fmpz_struct
 
 cdef extern from "flint/flint.h":
+    const int FLINT_BITS
     ctypedef void * flint_rand_t
     void flint_randinit(flint_rand_t state)
     void flint_randclear(flint_rand_t state)
     void flint_set_num_threads(long)
     long flint_get_num_threads()
     void flint_cleanup()
 
+cdef extern from *:
+    """
+    /* FLINT_BITS is not known until C compile time. We need to check if long
+     * or long long matches FLINT_BITS to know which CPython function to call.
+     */
+    #if FLINT_BITS == 32 && LONG_MAX == 2147483647
+    #define pylong_as_slong PyLong_AsLongAndOverflow
+    #elif FLINT_BITS == 64 && LLONG_MAX == 9223372036854775807
+    #define pylong_as_slong PyLong_AsLongLongAndOverflow
+    #else
+    #error FLINT_BITS does not match width of long or long long.
+    #endif
+    """
+    slong pylong_as_slong(PyObject *pylong, int *overflow)
+
 cdef extern from "flint/nmod_vec.h":
     ctypedef struct nmod_t:
        mp_limb_t n

src/flint/fmpz.pyx

@@ -1,7 +1,7 @@
 cdef inline int fmpz_set_pylong(fmpz_t x, obj):
     cdef int overflow
-    cdef long longval
-    longval = PyLong_AsLongAndOverflow(<PyObject*>obj, &overflow)
+    cdef slong longval
+    longval = pylong_as_slong(<PyObject*>obj, &overflow)
     if overflow:
         s = "%x" % obj
         fmpz_set_str(x, chars_from_str(s), 16)
@@ -28,7 +28,7 @@ cdef fmpz_get_intlong(fmpz_t x):
         libc.stdlib.free(s)
         return v
     else:
-        return <long>x[0]
+        return <slong>x[0]
 
 cdef int fmpz_set_any_ref(fmpz_t x, obj):
     if typecheck(obj, fmpz):