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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* gmpy2_mpfr.h *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Python interface to the GMP or MPIR, MPFR, and MPC multiple precision *
* libraries. *
* *
* Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, *
* 2008, 2009 Alex Martelli *
* *
* Copyright 2008, 2009, 2010, 2011, 2012, 2013, 2014, *
* 2015, 2016, 2017, 2018 Case Van Horsen *
* *
* This file is part of GMPY2. *
* *
* GMPY2 is free software: you can redistribute it and/or modify it under *
* the terms of the GNU Lesser General Public License as published by the *
* Free Software Foundation, either version 3 of the License, or (at your *
* option) any later version. *
* *
* GMPY2 is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public *
* License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with GMPY2; if not, see <http://www.gnu.org/licenses/> *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* gmpy_mpfr C API extension header file.
*
* Provide interface to the MPFR (Multiple Precision Floating-point with
* Rounding) library.
*
* Version 2.00, April 2011 (created) casevh
*/
#ifndef GMPY_MPFR_H
#define GMPY_MPFR_H
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(FLT_RADIX) || (FLT_RADIX!=2)
# error "FLT_RADIX undefined or != 2, GMPY2 is confused. :("
#endif
#if defined(MS_WIN32) && defined(_MSC_VER)
# pragma comment(lib,"mpfr.lib")
#endif
#ifdef FAST
/* Very bad code ahead. I've copied portions of mpfr-impl.h and
* hacked them so they work. This code will only be enabled if you
* specify the --fast option.
*/
#define MPFR_THREAD_ATTR __thread
__MPFR_DECLSPEC extern MPFR_THREAD_ATTR unsigned int __gmpfr_flags;
__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emin;
__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emax;
/* Flags of __gmpfr_flags */
#define MPFR_FLAGS_UNDERFLOW 1
#define MPFR_FLAGS_OVERFLOW 2
#define MPFR_FLAGS_NAN 4
#define MPFR_FLAGS_INEXACT 8
#define MPFR_FLAGS_ERANGE 16
#define MPFR_FLAGS_DIVBY0 32
#define MPFR_FLAGS_ALL 63
/* Replace some common functions for direct access to the global vars */
#define mpfr_get_emin() (__gmpfr_emin + 0)
#define mpfr_get_emax() (__gmpfr_emax + 0)
#define mpfr_clear_flags() ((void) (__gmpfr_flags = 0))
#define mpfr_clear_underflow() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_UNDERFLOW))
#define mpfr_clear_overflow() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_OVERFLOW))
#define mpfr_clear_nanflag() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_NAN))
#define mpfr_clear_inexflag() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_INEXACT))
#define mpfr_clear_erangeflag() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_ERANGE))
#define mpfr_clear_divby0() ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_DIVBY0))
#define mpfr_underflow_p() ((int) (__gmpfr_flags & MPFR_FLAGS_UNDERFLOW))
#define mpfr_overflow_p() ((int) (__gmpfr_flags & MPFR_FLAGS_OVERFLOW))
#define mpfr_nanflag_p() ((int) (__gmpfr_flags & MPFR_FLAGS_NAN))
#define mpfr_inexflag_p() ((int) (__gmpfr_flags & MPFR_FLAGS_INEXACT))
#define mpfr_erangeflag_p() ((int) (__gmpfr_flags & MPFR_FLAGS_ERANGE))
#define mpfr_divby0_p() ((int) (__gmpfr_flags & MPFR_FLAGS_DIVBY0))
#define mpfr_check_range(x,t,r) \
((((x)->_mpfr_exp) >= __gmpfr_emin && ((x)->_mpfr_exp) <= __gmpfr_emax) \
? ((t) ? (__gmpfr_flags |= MPFR_FLAGS_INEXACT, (t)) : 0) \
: mpfr_check_range(x,t,r))
/* End of the really bad code. Hopefully.
*/
#endif
static PyTypeObject MPFR_Type;
#define MPFR_Check(v) (((PyObject*)v)->ob_type == &MPFR_Type)
#define GMPY_DIVZERO(msg) PyErr_SetString(GMPyExc_DivZero, msg)
#define GMPY_INEXACT(msg) PyErr_SetString(GMPyExc_Inexact, msg)
#define GMPY_INVALID(msg) PyErr_SetString(GMPyExc_Invalid, msg)
#define GMPY_OVERFLOW(msg) PyErr_SetString(GMPyExc_Overflow, msg)
#define GMPY_UNDERFLOW(msg) PyErr_SetString(GMPyExc_Underflow, msg)
#define GMPY_ERANGE(msg) PyErr_SetString(GMPyExc_Erange, msg)
#define GMPY_MPFR_CHECK_RANGE(V, CTX) \
if (mpfr_regular_p(V->f) && \
(!((V->f->_mpfr_exp >= CTX->ctx.emin) && \
(V->f->_mpfr_exp <= CTX->ctx.emax)))) { \
mpfr_exp_t _oldemin, _oldemax; \
_oldemin = mpfr_get_emin(); \
_oldemax = mpfr_get_emax(); \
mpfr_set_emin(CTX->ctx.emin); \
mpfr_set_emax(CTX->ctx.emax); \
V->rc = mpfr_check_range(V->f, V->rc, GET_MPFR_ROUND(CTX)); \
mpfr_set_emin(_oldemin); \
mpfr_set_emax(_oldemax); \
}
#define GMPY_MPFR_SUBNORMALIZE(V, CTX) \
if (CTX->ctx.subnormalize && \
V->f->_mpfr_exp >= CTX->ctx.emin && \
V->f->_mpfr_exp <= CTX->ctx.emin + mpfr_get_prec(V->f) - 2) { \
mpfr_exp_t _oldemin, _oldemax; \
_oldemin = mpfr_get_emin(); \
_oldemax = mpfr_get_emax(); \
mpfr_set_emin(CTX->ctx.emin); \
mpfr_set_emax(CTX->ctx.emax); \
V->rc = mpfr_subnormalize(V->f, V->rc, GET_MPFR_ROUND(CTX)); \
mpfr_set_emin(_oldemin); \
mpfr_set_emax(_oldemax); \
}
/* Exceptions should be checked in order of least important to most important.
*/
#define GMPY_MPFR_EXCEPTIONS(V, CTX) \
CTX->ctx.underflow |= mpfr_underflow_p(); \
CTX->ctx.overflow |= mpfr_overflow_p(); \
CTX->ctx.invalid |= mpfr_nanflag_p(); \
CTX->ctx.inexact |= mpfr_inexflag_p(); \
CTX->ctx.divzero |= mpfr_divby0_p(); \
if (CTX->ctx.traps) { \
if ((CTX->ctx.traps & TRAP_UNDERFLOW) && mpfr_underflow_p()) { \
GMPY_UNDERFLOW("underflow"); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
if ((CTX->ctx.traps & TRAP_OVERFLOW) && mpfr_overflow_p()) { \
GMPY_OVERFLOW("overflow"); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
if ((CTX->ctx.traps & TRAP_INEXACT) && mpfr_inexflag_p()) { \
GMPY_INEXACT("inexact result"); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
if ((CTX->ctx.traps & TRAP_INVALID) && mpfr_nanflag_p()) { \
GMPY_INVALID("invalid operation"); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
if ((CTX->ctx.traps & TRAP_DIVZERO) && mpfr_divby0_p()) { \
GMPY_DIVZERO("division by zero"); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
}
#define GMPY_MPFR_CLEANUP(V, CTX) \
GMPY_MPFR_CHECK_RANGE(V, CTX); \
GMPY_MPFR_SUBNORMALIZE(V, CTX); \
GMPY_MPFR_EXCEPTIONS(V, CTX);
#define GMPY_CHECK_ERANGE(V, CTX, MSG) \
CTX->ctx.erange |= mpfr_erangeflag_p(); \
if (CTX->ctx.traps) { \
if ((CTX->ctx.traps & TRAP_ERANGE) && mpfr_erangeflag_p()) { \
GMPY_ERANGE(MSG); \
Py_XDECREF((PyObject*)V); \
V = NULL; \
} \
} \
static void _GMPy_MPFR_Cleanup(MPFR_Object **v, CTXT_Object *ctext);
#ifdef __cplusplus
}
#endif
#endif
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