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/*
* Copyright (c) 2020 Stefan Krah. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef CPYTHON_DECIMAL_H_
#define CPYTHON_DECIMAL_H_
#include <Python.h>
#ifdef __cplusplus
extern "C" {
#endif
/****************************************************************************/
/* Libmpdec API */
/****************************************************************************/
#ifndef LIBMPDEC_MPDECIMAL_H_
struct mpd_t; /* ABI-stable in the libmpdec-2.x series */
/* status cases for getting a triple */
enum mpd_triple_class {
MPD_TRIPLE_NORMAL,
MPD_TRIPLE_INF,
MPD_TRIPLE_QNAN,
MPD_TRIPLE_SNAN,
MPD_TRIPLE_ERROR,
};
typedef struct {
enum mpd_triple_class tag;
uint8_t sign;
uint64_t hi;
uint64_t lo;
int64_t exp;
} mpd_uint128_triple_t;
#endif
/****************************************************************************/
/* Capsule API */
/****************************************************************************/
#define PyDec_CAPSULE_NAME "_decimal._API"
/* Simple API */
#define PyDec_TypeCheck_INDEX 0
#define PyDec_TypeCheck_RETURN int
#define PyDec_TypeCheck_ARGS (const PyObject *)
#define PyDec_IsSpecial_INDEX 1
#define PyDec_IsSpecial_RETURN int
#define PyDec_IsSpecial_ARGS (const PyObject *)
#define PyDec_IsNaN_INDEX 2
#define PyDec_IsNaN_RETURN int
#define PyDec_IsNaN_ARGS (const PyObject *)
#define PyDec_IsInfinite_INDEX 3
#define PyDec_IsInfinite_RETURN int
#define PyDec_IsInfinite_ARGS (const PyObject *)
#define PyDec_GetDigits_INDEX 4
#define PyDec_GetDigits_RETURN int64_t
#define PyDec_GetDigits_ARGS (const PyObject *)
#define PyDec_AsUint128Triple_INDEX 5
#define PyDec_AsUint128Triple_RETURN mpd_uint128_triple_t
#define PyDec_AsUint128Triple_ARGS (const PyObject *)
#define PyDec_FromUint128Triple_INDEX 6
#define PyDec_FromUint128Triple_RETURN PyObject *
#define PyDec_FromUint128Triple_ARGS (const mpd_uint128_triple_t *triple)
/* Advanced API */
#define PyDec_Alloc_INDEX 7
#define PyDec_Alloc_RETURN PyObject *
#define PyDec_Alloc_ARGS (void)
#define PyDec_Get_INDEX 8
#define PyDec_Get_RETURN mpd_t *
#define PyDec_Get_ARGS (PyObject *)
#define PyDec_GetConst_INDEX 9
#define PyDec_GetConst_RETURN const mpd_t *
#define PyDec_GetConst_ARGS (const PyObject *)
#define CPYTHON_DECIMAL_MAX_API 10
#ifdef CPYTHON_DECIMAL_MODULE
/* Simple API */
static PyDec_TypeCheck_RETURN PyDec_TypeCheck PyDec_TypeCheck_ARGS;
static PyDec_IsSpecial_RETURN PyDec_IsSpecial PyDec_IsSpecial_ARGS;
static PyDec_IsNaN_RETURN PyDec_IsNaN PyDec_IsNaN_ARGS;
static PyDec_IsInfinite_RETURN PyDec_IsInfinite PyDec_IsInfinite_ARGS;
static PyDec_GetDigits_RETURN PyDec_GetDigits PyDec_GetDigits_ARGS;
static PyDec_AsUint128Triple_RETURN PyDec_AsUint128Triple PyDec_AsUint128Triple_ARGS;
static PyDec_FromUint128Triple_RETURN PyDec_FromUint128Triple PyDec_FromUint128Triple_ARGS;
/* Advanced API */
static PyDec_Alloc_RETURN PyDec_Alloc PyDec_Alloc_ARGS;
static PyDec_Get_RETURN PyDec_Get PyDec_Get_ARGS;
static PyDec_GetConst_RETURN PyDec_GetConst PyDec_GetConst_ARGS;
#else
static void **_decimal_api;
/* Simple API */
#define PyDec_TypeCheck \
(*(PyDec_TypeCheck_RETURN (*)PyDec_TypeCheck_ARGS) _decimal_api[PyDec_TypeCheck_INDEX])
#define PyDec_IsSpecial \
(*(PyDec_IsSpecial_RETURN (*)PyDec_IsSpecial_ARGS) _decimal_api[PyDec_IsSpecial_INDEX])
#define PyDec_IsNaN \
(*(PyDec_IsNaN_RETURN (*)PyDec_IsNaN_ARGS) _decimal_api[PyDec_IsNaN_INDEX])
#define PyDec_IsInfinite \
(*(PyDec_IsInfinite_RETURN (*)PyDec_IsInfinite_ARGS) _decimal_api[PyDec_IsInfinite_INDEX])
#define PyDec_GetDigits \
(*(PyDec_GetDigits_RETURN (*)PyDec_GetDigits_ARGS) _decimal_api[PyDec_GetDigits_INDEX])
#define PyDec_AsUint128Triple \
(*(PyDec_AsUint128Triple_RETURN (*)PyDec_AsUint128Triple_ARGS) _decimal_api[PyDec_AsUint128Triple_INDEX])
#define PyDec_FromUint128Triple \
(*(PyDec_FromUint128Triple_RETURN (*)PyDec_FromUint128Triple_ARGS) _decimal_api[PyDec_FromUint128Triple_INDEX])
/* Advanced API */
#define PyDec_Alloc \
(*(PyDec_Alloc_RETURN (*)PyDec_Alloc_ARGS) _decimal_api[PyDec_Alloc_INDEX])
#define PyDec_Get \
(*(PyDec_Get_RETURN (*)PyDec_Get_ARGS) _decimal_api[PyDec_Get_INDEX])
#define PyDec_GetConst \
(*(PyDec_GetConst_RETURN (*)PyDec_GetConst_ARGS) _decimal_api[PyDec_GetConst_INDEX])
static int
import_decimal(void)
{
_decimal_api = (void **)PyCapsule_Import(PyDec_CAPSULE_NAME, 0);
if (_decimal_api == NULL) {
return -1;
}
return 0;
}
#endif
#ifdef __cplusplus
}
#endif
#endif /* CPYTHON_DECIMAL_H_ */
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