python3-cypari2: rebuild for Python 3.12
This commit is contained in:
Gonzalo Tornaría
Andrew J. Hesford
parent
55936387f4
commit
66a183b400
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@ -0,0 +1,214 @@
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From 0c7e9a1749d67ef1b880283112e968f644e24341 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Gonzalo=20Tornar=C3=ADa?= <tornaria@cmat.edu.uy>
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Date: Mon, 2 Oct 2023 07:47:14 -0300
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Subject: [PATCH] Support python 3.12
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---
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cypari2/Py_SET_SIZE.h | 8 ----
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cypari2/convert.pyx | 27 ++++--------
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cypari2/pycore_long.h | 98 +++++++++++++++++++++++++++++++++++++++++
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cypari2/pycore_long.pxd | 9 ++++
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4 files changed, 116 insertions(+), 26 deletions(-)
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delete mode 100644 cypari2/Py_SET_SIZE.h
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create mode 100644 cypari2/pycore_long.h
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create mode 100644 cypari2/pycore_long.pxd
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diff --git a/cypari2/Py_SET_SIZE.h b/cypari2/Py_SET_SIZE.h
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deleted file mode 100644
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index 5f18ab0..0000000
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--- a/cypari2/Py_SET_SIZE.h
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+++ /dev/null
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@@ -1,8 +0,0 @@
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-#include "Python.h"
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-
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-#if (PY_MAJOR_VERSION == 3) && (PY_MINOR_VERSION < 9)
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-// The function Py_SET_SIZE is defined starting with python 3.9.
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-void Py_SET_SIZE(PyVarObject *o, Py_ssize_t size){
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- Py_SIZE(o) = size;
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-}
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-#endif
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diff --git a/cypari2/convert.pyx b/cypari2/convert.pyx
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index 7c2ed24..8d39c3c 100644
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--- a/cypari2/convert.pyx
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+++ b/cypari2/convert.pyx
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@@ -54,14 +54,8 @@ from libc.math cimport INFINITY
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from .paridecl cimport *
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from .stack cimport new_gen, reset_avma
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from .string_utils cimport to_string, to_bytes
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-
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-cdef extern from *:
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- ctypedef struct PyLongObject:
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- digit* ob_digit
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-
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-cdef extern from "Py_SET_SIZE.h":
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- void Py_SET_SIZE(py_long o, Py_ssize_t size)
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-
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+from .pycore_long cimport (ob_digit, _PyLong_IsZero, _PyLong_IsNegative,
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+ _PyLong_IsPositive, _PyLong_DigitCount, _PyLong_SetSignAndDigitCount)
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########################################################################
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# Conversion PARI -> Python
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@@ -424,7 +418,7 @@ cdef PyLong_FromINT(GEN g):
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cdef Py_ssize_t sizedigits_final = 0
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cdef py_long x = _PyLong_New(sizedigits)
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- cdef digit* D = x.ob_digit
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+ cdef digit* D = ob_digit(x)
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cdef digit d
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cdef ulong w
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@@ -452,10 +446,7 @@ cdef PyLong_FromINT(GEN g):
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sizedigits_final = i+1
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# Set correct size
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- if signe(g) > 0:
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- Py_SET_SIZE(x, sizedigits_final)
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- else:
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- Py_SET_SIZE(x, -sizedigits_final)
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+ _PyLong_SetSignAndDigitCount(x, signe(g), sizedigits_final)
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return x
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@@ -465,18 +456,18 @@ cdef PyLong_FromINT(GEN g):
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########################################################################
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cdef GEN PyLong_AS_GEN(py_long x):
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- cdef const digit* D = x.ob_digit
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+ cdef const digit* D = ob_digit(x)
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# Size of the input
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cdef size_t sizedigits
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cdef long sgn
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- if Py_SIZE(x) == 0:
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+ if _PyLong_IsZero(x):
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return gen_0
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- elif Py_SIZE(x) > 0:
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- sizedigits = Py_SIZE(x)
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+ elif _PyLong_IsPositive(x):
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+ sizedigits = _PyLong_DigitCount(x)
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sgn = evalsigne(1)
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else:
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- sizedigits = -Py_SIZE(x)
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+ sizedigits = _PyLong_DigitCount(x)
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sgn = evalsigne(-1)
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# Size of the output, in bits and in words
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diff --git a/cypari2/pycore_long.h b/cypari2/pycore_long.h
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new file mode 100644
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index 0000000..ff1a73d
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--- /dev/null
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+++ b/cypari2/pycore_long.h
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@@ -0,0 +1,98 @@
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+#include "Python.h"
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+#include <stdbool.h>
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+
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+#if PY_VERSION_HEX >= 0x030C00A5
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+#define ob_digit(o) (((PyLongObject*)o)->long_value.ob_digit)
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+#else
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+#define ob_digit(o) (((PyLongObject*)o)->ob_digit)
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+#endif
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+
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+#if PY_VERSION_HEX >= 0x030C00A7
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+// taken from cpython:Include/internal/pycore_long.h @ 3.12
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+
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+/* Long value tag bits:
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+ * 0-1: Sign bits value = (1-sign), ie. negative=2, positive=0, zero=1.
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+ * 2: Reserved for immortality bit
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+ * 3+ Unsigned digit count
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+ */
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+#define SIGN_MASK 3
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+#define SIGN_ZERO 1
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+#define SIGN_NEGATIVE 2
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+#define NON_SIZE_BITS 3
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+
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+static inline bool
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+_PyLong_IsZero(const PyLongObject *op)
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+{
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+ return (op->long_value.lv_tag & SIGN_MASK) == SIGN_ZERO;
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+}
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+
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+static inline bool
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+_PyLong_IsNegative(const PyLongObject *op)
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+{
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+ return (op->long_value.lv_tag & SIGN_MASK) == SIGN_NEGATIVE;
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+}
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+
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+static inline bool
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+_PyLong_IsPositive(const PyLongObject *op)
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+{
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+ return (op->long_value.lv_tag & SIGN_MASK) == 0;
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+}
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+
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+static inline Py_ssize_t
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+_PyLong_DigitCount(const PyLongObject *op)
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+{
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+ assert(PyLong_Check(op));
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+ return op->long_value.lv_tag >> NON_SIZE_BITS;
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+}
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+
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+#define TAG_FROM_SIGN_AND_SIZE(sign, size) ((1 - (sign)) | ((size) << NON_SIZE_BITS))
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+
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+static inline void
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+_PyLong_SetSignAndDigitCount(PyLongObject *op, int sign, Py_ssize_t size)
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+{
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+ assert(size >= 0);
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+ assert(-1 <= sign && sign <= 1);
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+ assert(sign != 0 || size == 0);
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+ op->long_value.lv_tag = TAG_FROM_SIGN_AND_SIZE(sign, (size_t)size);
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+}
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+
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+#else
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+// fallback for < 3.12
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+
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+static inline bool
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+_PyLong_IsZero(const PyLongObject *op)
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+{
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+ return Py_SIZE(op) == 0;
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+}
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+
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+static inline bool
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+_PyLong_IsNegative(const PyLongObject *op)
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+{
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+ return Py_SIZE(op) < 0;
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+}
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+
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+static inline bool
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+_PyLong_IsPositive(const PyLongObject *op)
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+{
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+ return Py_SIZE(op) > 0;
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+}
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+
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+static inline Py_ssize_t
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+_PyLong_DigitCount(const PyLongObject *op)
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+{
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+ Py_ssize_t size = Py_SIZE(op);
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+ return size < 0 ? -size : size;
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+}
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+
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+static inline void
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+_PyLong_SetSignAndDigitCount(PyLongObject *op, int sign, Py_ssize_t size)
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+{
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+#if (PY_MAJOR_VERSION == 3) && (PY_MINOR_VERSION < 9)
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+// The function Py_SET_SIZE is defined starting with python 3.9.
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+ Py_SIZE(o) = size;
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+#else
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+ Py_SET_SIZE(op, sign < 0 ? -size : size);
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+#endif
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+}
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+
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+#endif
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diff --git a/cypari2/pycore_long.pxd b/cypari2/pycore_long.pxd
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new file mode 100644
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index 0000000..41de637
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--- /dev/null
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+++ b/cypari2/pycore_long.pxd
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@@ -0,0 +1,9 @@
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+from cpython.longintrepr cimport py_long, digit
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+
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+cdef extern from "pycore_long.h":
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+ digit* ob_digit(py_long o)
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+ bint _PyLong_IsZero(py_long o)
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+ bint _PyLong_IsNegative(py_long o)
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+ bint _PyLong_IsPositive(py_long o)
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+ Py_ssize_t _PyLong_DigitCount(py_long o)
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+ void _PyLong_SetSignAndDigitCount(py_long o, int sign, Py_ssize_t size)
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@ -1,7 +1,7 @@
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# Template file for 'python3-cypari2'
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pkgname=python3-cypari2
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version=2.1.3
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revision=4
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revision=5
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build_style=python3-module
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hostmakedepends="python3-setuptools python3-Cython pari perl"
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makedepends="python3-devel python3-cysignals pari-devel gmp-devel"
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