1 /* Utilities for MPFR developers, not exported.
3 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramel projects, INRIA.
6 This file is part of the GNU MPFR Library.
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
23 #ifndef __MPFR_IMPL_H__
24 #define __MPFR_IMPL_H__
26 /* Let's include some standard headers unconditionally as they are
27 already needed by several source files or when some options are
28 enabled/disabled, and it is easy to forget them (some configure
29 options may hide the error).
30 Note: If some source file must not have such a header included
31 (which is very unlikely and probably means something broken in
32 this source file), we should do that with some macro (that would
33 also force to disable incompatible features). */
34 #if defined (__cplusplus)
43 #if _MPFR_EXP_FORMAT == 4
44 /* mpfr_exp_t will be defined as intmax_t */
45 # include "mpfr-intmax.h"
48 /* Check if we are inside a build of MPFR or inside the test suite.
49 This is needed in mpfr.h to export or import the functions.
50 It matters only for Windows DLL */
51 #ifndef __MPFR_TEST_H__
52 # define __MPFR_WITHIN_MPFR 1
55 /******************************************************
56 ****************** Include files *********************
57 ******************************************************/
59 /* Include 'config.h' before using ANY configure macros if needed
60 NOTE: It isn't MPFR 'config.h', but GMP's one! */
65 #ifdef MPFR_HAVE_GMP_IMPL /* Build with gmp internals*/
70 # ifndef __GMP_IMPL_H__
71 # include "gmp-impl.h"
73 # ifdef MPFR_NEED_LONGLONG_H
74 # include "longlong.h"
80 #else /* Build without gmp internals */
88 # ifndef __GMPFR_GMP_H__
89 # include "mpfr-gmp.h"
91 # ifdef MPFR_NEED_LONGLONG_H
92 # define LONGLONG_STANDALONE
93 # include "mpfr-longlong.h"
97 #undef MPFR_NEED_LONGLONG_H
99 /* If a mpn_sqr_n macro is not defined, use mpn_mul. GMP 4.x defines a
100 mpn_sqr_n macro in gmp-impl.h (and this macro disappeared in GMP 5),
101 so that GMP's macro can only be used when MPFR has been configured
102 with --with-gmp-build (and only with GMP 4.x). */
104 # define mpn_sqr_n(dst,src,n) mpn_mul((dst),(src),(n),(src),(n))
107 /* For the definition of MPFR_THREAD_ATTR. GCC/ICC detection macros are
108 no longer used, as they sometimes gave incorrect information about
109 the support of thread-local variables. A configure check is now done.
110 If the use of detection macros is needed in the future, this could be
111 moved below (after the detection macros are defined). */
112 #include "mpfr-thread.h"
115 /******************************************************
116 ***************** Detection macros *******************
117 ******************************************************/
119 /* Macros to detect STDC, GCC, GLIBC, GMP and ICC version */
120 #if defined(__STDC_VERSION__)
121 # define __MPFR_STDC(version) (__STDC_VERSION__>=(version))
122 #elif defined(__STDC__)
123 # define __MPFR_STDC(version) (0 == (version))
125 # define __MPFR_STDC(version) 0
129 /* Under MS Windows (e.g. with VS2008 or VS2010), Intel's compiler doesn't
130 support/enable extensions like the ones seen under GNU/Linux.
131 https://sympa.inria.fr/sympa/arc/mpfr/2011-02/msg00032.html */
132 # define __MPFR_ICC(a,b,c) 0
134 # define __MPFR_ICC(a,b,c) (__ICC >= (a)*100+(b)*10+(c))
135 #elif defined(__INTEL_COMPILER)
136 # define __MPFR_ICC(a,b,c) (__INTEL_COMPILER >= (a)*100+(b)*10+(c))
138 # define __MPFR_ICC(a,b,c) 0
141 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && ! __MPFR_ICC(0,0,0)
142 # define __MPFR_GNUC(a,i) \
143 (MPFR_VERSION_NUM(__GNUC__,__GNUC_MINOR__,0) >= MPFR_VERSION_NUM(a,i,0))
145 # define __MPFR_GNUC(a,i) 0
148 #if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
149 # define __MPFR_GLIBC(a,i) \
150 (MPFR_VERSION_NUM(__GLIBC__,__GLIBC_MINOR__,0) >= MPFR_VERSION_NUM(a,i,0))
152 # define __MPFR_GLIBC(a,i) 0
155 #if defined(__GNU_MP_VERSION) && \
156 defined(__GNU_MP_VERSION_MINOR) && \
157 defined(__GNU_MP_VERSION_PATCHLEVEL)
158 # define __MPFR_GMP(a,b,c) \
159 (MPFR_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL) >= MPFR_VERSION_NUM(a,b,c))
161 # define __MPFR_GMP(a,b,c) 0
166 /******************************************************
167 ************* GMP Basic Pointer Types ****************
168 ******************************************************/
170 typedef mp_limb_t *mpfr_limb_ptr;
171 typedef __gmp_const mp_limb_t *mpfr_limb_srcptr;
175 /******************************************************
176 ****************** (U)INTMAX_MAX *********************
177 ******************************************************/
179 /* Let's try to fix UINTMAX_MAX and INTMAX_MAX if these macros don't work
180 (e.g. with gcc -ansi -pedantic-errors in 32-bit mode under GNU/Linux),
181 see <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=582698>. */
182 #ifdef _MPFR_H_HAVE_INTMAX_T
183 # ifdef MPFR_HAVE_INTMAX_MAX
184 # define MPFR_UINTMAX_MAX UINTMAX_MAX
185 # define MPFR_INTMAX_MAX INTMAX_MAX
186 # define MPFR_INTMAX_MIN INTMAX_MIN
188 # define MPFR_UINTMAX_MAX ((uintmax_t) -1)
189 # define MPFR_INTMAX_MAX ((intmax_t) (MPFR_UINTMAX_MAX >> 1))
190 # define MPFR_INTMAX_MIN (INT_MIN + INT_MAX - MPFR_INTMAX_MAX)
196 /******************************************************
197 ******************** Check GMP ***********************
198 ******************************************************/
200 #if !__MPFR_GMP(4,1,0)
201 # error "GMP 4.1.0 or newer needed"
204 #if GMP_NAIL_BITS != 0
205 # error "MPFR doesn't support nonzero values of GMP_NAIL_BITS"
208 #if (GMP_NUMB_BITS<32) || (GMP_NUMB_BITS & (GMP_NUMB_BITS - 1))
209 # error "GMP_NUMB_BITS must be a power of 2, and >= 32"
212 #if GMP_NUMB_BITS == 16
213 # define MPFR_LOG2_GMP_NUMB_BITS 4
214 #elif GMP_NUMB_BITS == 32
215 # define MPFR_LOG2_GMP_NUMB_BITS 5
216 #elif GMP_NUMB_BITS == 64
217 # define MPFR_LOG2_GMP_NUMB_BITS 6
218 #elif GMP_NUMB_BITS == 128
219 # define MPFR_LOG2_GMP_NUMB_BITS 7
220 #elif GMP_NUMB_BITS == 256
221 # define MPFR_LOG2_GMP_NUMB_BITS 8
223 # error "Can't compute log2(GMP_NUMB_BITS)"
226 #if __MPFR_GNUC(3,0) || __MPFR_ICC(8,1,0)
227 /* For the future: N1478: Supporting the 'noreturn' property in C1x
228 http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1478.htm */
229 # define MPFR_NORETURN_ATTR __attribute__ ((noreturn))
230 # define MPFR_CONST_ATTR __attribute__ ((const))
232 # define MPFR_NORETURN_ATTR
233 # define MPFR_CONST_ATTR
236 /******************************************************
237 ************* Global Internal Variables **************
238 ******************************************************/
241 struct __gmpfr_cache_s {
244 int (*func)(mpfr_ptr, mpfr_rnd_t);
246 typedef struct __gmpfr_cache_s mpfr_cache_t[1];
247 typedef struct __gmpfr_cache_s *mpfr_cache_ptr;
249 #if defined (__cplusplus)
253 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR unsigned int __gmpfr_flags;
254 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emin;
255 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emax;
256 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_prec_t __gmpfr_default_fp_bit_precision;
257 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_rnd_t __gmpfr_default_rounding_mode;
258 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_euler;
259 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_catalan;
261 #ifndef MPFR_USE_LOGGING
262 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_pi;
263 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_log2;
265 /* Two constants are used by the logging functions (via mpfr_fprintf,
266 then mpfr_log, for the base conversion): pi and log(2). Since the
267 mpfr_cache function isn't re-entrant when working on the same cache,
268 we need to define two caches for each constant. */
269 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_normal_pi;
270 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_normal_log2;
271 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_logging_pi;
272 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_logging_log2;
273 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_ptr __gmpfr_cache_const_pi;
274 __MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_ptr __gmpfr_cache_const_log2;
278 __MPFR_DECLSPEC extern const __mpfr_struct __gmpfr_l2b[BASE_MAX-1][2];
280 /* Note: do not use the following values when they can be outside the
281 current exponent range, e.g. when the exponent range has not been
282 extended yet; under such a condition, they can be used only in
284 __MPFR_DECLSPEC extern const mpfr_t __gmpfr_one;
285 __MPFR_DECLSPEC extern const mpfr_t __gmpfr_two;
286 __MPFR_DECLSPEC extern const mpfr_t __gmpfr_four;
289 #if defined (__cplusplus)
293 /* Flags of __gmpfr_flags */
294 #define MPFR_FLAGS_UNDERFLOW 1
295 #define MPFR_FLAGS_OVERFLOW 2
296 #define MPFR_FLAGS_NAN 4
297 #define MPFR_FLAGS_INEXACT 8
298 #define MPFR_FLAGS_ERANGE 16
299 #define MPFR_FLAGS_DIVBY0 32
300 #define MPFR_FLAGS_ALL 63
302 /* Replace some common functions for direct access to the global vars */
303 #define mpfr_get_emin() (__gmpfr_emin + 0)
304 #define mpfr_get_emax() (__gmpfr_emax + 0)
305 #define mpfr_get_default_rounding_mode() (__gmpfr_default_rounding_mode + 0)
306 #define mpfr_get_default_prec() (__gmpfr_default_fp_bit_precision + 0)
308 #define mpfr_clear_flags() \
309 ((void) (__gmpfr_flags = 0))
310 #define mpfr_clear_underflow() \
311 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_UNDERFLOW))
312 #define mpfr_clear_overflow() \
313 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_OVERFLOW))
314 #define mpfr_clear_nanflag() \
315 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_NAN))
316 #define mpfr_clear_inexflag() \
317 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_INEXACT))
318 #define mpfr_clear_erangeflag() \
319 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_ERANGE))
320 #define mpfr_clear_divby0() \
321 ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_DIVBY0))
322 #define mpfr_underflow_p() \
323 ((int) (__gmpfr_flags & MPFR_FLAGS_UNDERFLOW))
324 #define mpfr_overflow_p() \
325 ((int) (__gmpfr_flags & MPFR_FLAGS_OVERFLOW))
326 #define mpfr_nanflag_p() \
327 ((int) (__gmpfr_flags & MPFR_FLAGS_NAN))
328 #define mpfr_inexflag_p() \
329 ((int) (__gmpfr_flags & MPFR_FLAGS_INEXACT))
330 #define mpfr_erangeflag_p() \
331 ((int) (__gmpfr_flags & MPFR_FLAGS_ERANGE))
332 #define mpfr_divby0_p() \
333 ((int) (__gmpfr_flags & MPFR_FLAGS_DIVBY0))
335 /* Testing an exception flag correctly is tricky. There are mainly two
336 pitfalls: First, one needs to remember to clear the corresponding
337 flag, in case it was set before the function call or during some
338 intermediate computations (in practice, one can clear all the flags).
339 Secondly, one needs to test the flag early enough, i.e. before it
340 can be modified by another function. Moreover, it is quite difficult
341 (if not impossible) to reliably check problems with "make check". To
342 avoid these pitfalls, it is recommended to use the following macros.
343 Other use of the exception-flag predicate functions/macros will be
344 detected by mpfrlint.
345 Note: _op can be either a statement or an expression.
346 MPFR_BLOCK_EXCEP should be used only inside a block; it is useful to
347 detect some exception in order to exit the block as soon as possible. */
348 #define MPFR_BLOCK_DECL(_flags) unsigned int _flags
349 /* The (void) (_flags) makes sure that _flags is read at least once (it
350 makes sense to use MPFR_BLOCK while _flags will never be read in the
351 source, so that we wish to avoid the corresponding warning). */
352 #define MPFR_BLOCK(_flags,_op) \
355 mpfr_clear_flags (); \
357 (_flags) = __gmpfr_flags; \
361 #define MPFR_BLOCK_TEST(_flags,_f) MPFR_UNLIKELY ((_flags) & (_f))
362 #define MPFR_BLOCK_EXCEP (__gmpfr_flags & (MPFR_FLAGS_UNDERFLOW | \
363 MPFR_FLAGS_OVERFLOW | \
364 MPFR_FLAGS_DIVBY0 | \
366 /* Let's use a MPFR_ prefix, because e.g. OVERFLOW is defined by glibc's
367 math.h, though this is not a reserved identifier! */
368 #define MPFR_UNDERFLOW(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_UNDERFLOW)
369 #define MPFR_OVERFLOW(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_OVERFLOW)
370 #define MPFR_NANFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_NAN)
371 #define MPFR_INEXFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_INEXACT)
372 #define MPFR_ERANGEFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_ERANGE)
373 #define MPFR_DIVBY0(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_DIVBY0)
376 /******************************************************
377 ******************** Assertions **********************
378 ******************************************************/
380 /* Compile with -DWANT_ASSERT to check all assert statements */
382 /* Note: do not use GMP macros ASSERT_ALWAYS and ASSERT as they are not
383 expressions, and as a consequence, they cannot be used in a for(),
384 with a comma operator and so on. */
386 /* MPFR_ASSERTN(expr): assertions that should always be checked */
387 #define MPFR_ASSERTN(expr) \
388 ((void) ((MPFR_UNLIKELY(expr)) || MPFR_UNLIKELY( (ASSERT_FAIL(expr),0) )))
390 /* MPFR_ASSERTD(expr): assertions that should be checked when testing */
392 # define MPFR_EXP_CHECK 1
393 # define MPFR_ASSERTD(expr) MPFR_ASSERTN (expr)
395 # define MPFR_ASSERTD(expr) ((void) 0)
398 /* Code to deal with impossible
399 WARNING: It doesn't use do { } while (0) for Insure++*/
400 #define MPFR_RET_NEVER_GO_HERE() {MPFR_ASSERTN(0); return 0;}
403 /******************************************************
404 ******************** Warnings ************************
405 ******************************************************/
407 /* MPFR_WARNING is no longer useful, but let's keep the macro in case
408 it needs to be used again in the future. */
410 #ifdef MPFR_USE_WARNINGS
412 # define MPFR_WARNING(W) \
415 char *q = getenv ("MPFR_QUIET"); \
416 if (q == NULL || *q == 0) \
417 fprintf (stderr, "MPFR: %s\n", W); \
421 # define MPFR_WARNING(W) ((void) 0)
425 /******************************************************
426 ****************** double macros *********************
427 ******************************************************/
429 /* Precision used for lower precision computations */
430 #define MPFR_SMALL_PRECISION 32
432 /* Definition of constants */
433 #define LOG2 0.69314718055994528622 /* log(2) rounded to zero on 53 bits */
434 #define ALPHA 4.3191365662914471407 /* a+2 = a*log(a), rounded to +infinity */
435 #define EXPM1 0.36787944117144227851 /* exp(-1), rounded to zero */
437 /* MPFR_DOUBLE_SPEC = 1 if the C type 'double' corresponds to IEEE-754
438 double precision, 0 if it doesn't, and undefined if one doesn't know.
439 On all the tested machines, MPFR_DOUBLE_SPEC = 1. To have this macro
440 defined here, #include <float.h> is needed. If need be, other values
441 could be defined for other specs (once they are known). */
442 #if !defined(MPFR_DOUBLE_SPEC) && defined(FLT_RADIX) && \
443 defined(DBL_MANT_DIG) && defined(DBL_MIN_EXP) && defined(DBL_MAX_EXP)
444 # if FLT_RADIX == 2 && DBL_MANT_DIG == 53 && \
445 DBL_MIN_EXP == -1021 && DBL_MAX_EXP == 1024
446 # define MPFR_DOUBLE_SPEC 1
448 # define MPFR_DOUBLE_SPEC 0
452 /* Debug non IEEE floats */
454 # undef _GMP_IEEE_FLOATS
456 #ifndef _GMP_IEEE_FLOATS
457 # define _GMP_IEEE_FLOATS 0
460 #ifndef IEEE_DBL_MANT_DIG
461 #define IEEE_DBL_MANT_DIG 53
463 #define MPFR_LIMBS_PER_DOUBLE ((IEEE_DBL_MANT_DIG-1)/GMP_NUMB_BITS+1)
465 #ifndef IEEE_FLT_MANT_DIG
466 #define IEEE_FLT_MANT_DIG 24
468 #define MPFR_LIMBS_PER_FLT ((IEEE_FLT_MANT_DIG-1)/GMP_NUMB_BITS+1)
470 /* Visual C++ doesn't support +1.0/0.0, -1.0/0.0 and 0.0/0.0
472 #if defined(_MSC_VER) && defined(_WIN32) && (_MSC_VER >= 1200)
473 static double double_zero = 0.0;
474 # define DBL_NAN (double_zero/double_zero)
475 # define DBL_POS_INF ((double) 1.0/double_zero)
476 # define DBL_NEG_INF ((double)-1.0/double_zero)
477 # define DBL_NEG_ZERO (-double_zero)
479 # define DBL_POS_INF ((double) 1.0/0.0)
480 # define DBL_NEG_INF ((double)-1.0/0.0)
481 # define DBL_NAN ((double) 0.0/0.0)
482 # define DBL_NEG_ZERO (-0.0)
485 /* Note: In the past, there was specific code for _GMP_IEEE_FLOATS, which
486 was based on NaN and Inf memory representations. This code was breaking
487 the aliasing rules (see ISO C99, 6.5#6 and 6.5#7 on the effective type)
488 and for this reason it did not behave correctly with GCC 4.5.0 20091119.
489 The code needed a memory transfer and was probably not better than the
490 macros below with a good compiler (a fix based on the NaN / Inf memory
491 representation would be even worse due to C limitations), and this code
492 could be selected only when MPFR was built with --with-gmp-build, thus
493 introducing a difference (bad for maintaining/testing MPFR); therefore
494 it has been removed. The old code required that the argument x be an
495 lvalue of type double. We still require that, in case one would need
496 to change the macros below, e.g. for some broken compiler. But the
497 LVALUE(x) condition could be removed if really necessary. */
498 /* Below, the &(x) == &(x) || &(x) != &(x) allows to make sure that x
499 is a lvalue without (probably) any warning from the compiler. The
500 &(x) != &(x) is needed to avoid a failure under Mac OS X 10.4.11
501 (with Xcode 2.4.1, i.e. the latest one). */
502 #define LVALUE(x) (&(x) == &(x) || &(x) != &(x))
503 #define DOUBLE_ISINF(x) (LVALUE(x) && ((x) > DBL_MAX || (x) < -DBL_MAX))
505 /* Avoid MIPSpro / IRIX64 / gcc -ffast-math (incorrect) optimizations.
506 The + must not be replaced by a ||. With gcc -ffast-math, NaN is
507 regarded as a positive number or something like that; the second
508 test catches this case. */
509 # define DOUBLE_ISNAN(x) \
510 (LVALUE(x) && !((((x) >= 0.0) + ((x) <= 0.0)) && -(x)*(x) <= 0.0))
512 # define DOUBLE_ISNAN(x) (LVALUE(x) && (x) != (x))
515 /******************************************************
516 *************** Long double macros *******************
517 ******************************************************/
519 /* We try to get the exact value of the precision of long double
520 (provided by the implementation) in order to provide correct
521 rounding in this case (not guaranteed if the C implementation
522 does not have an adequate long double arithmetic). Note that
523 it may be lower than the precision of some numbers that can
524 be represented in a long double; e.g. on FreeBSD/x86, it is
525 53 because the processor is configured to round in double
526 precision (even when using the long double type -- this is a
527 limitation of the x87 arithmetic), and on Mac OS X, it is 106
528 because the implementation is a double-double arithmetic.
529 Otherwise (e.g. in base 10), we get an upper bound of the
530 precision, and correct rounding isn't currently provided.
532 #if defined(LDBL_MANT_DIG) && FLT_RADIX == 2
533 # define MPFR_LDBL_MANT_DIG LDBL_MANT_DIG
535 # define MPFR_LDBL_MANT_DIG \
536 (sizeof(long double)*GMP_NUMB_BITS/sizeof(mp_limb_t))
538 #define MPFR_LIMBS_PER_LONG_DOUBLE \
539 ((sizeof(long double)-1)/sizeof(mp_limb_t)+1)
541 /* LONGDOUBLE_NAN_ACTION executes the code "action" if x is a NaN. */
543 /* On hppa2.0n-hp-hpux10 with the unbundled HP cc, the test x!=x on a NaN
544 has been seen false, meaning NaNs are not detected. This seemed to
545 happen only after other comparisons, not sure what's really going on. In
546 any case we can pick apart the bytes to identify a NaN. */
547 #ifdef HAVE_LDOUBLE_IEEE_QUAD_BIG
548 # define LONGDOUBLE_NAN_ACTION(x, action) \
553 unsigned int sign : 1; \
554 unsigned int exp : 15; \
555 unsigned int man3 : 16; \
556 unsigned int man2 : 32; \
557 unsigned int man1 : 32; \
558 unsigned int man0 : 32; \
562 if (u.s.exp == 0x7FFFL \
563 && (u.s.man0 | u.s.man1 | u.s.man2 | u.s.man3) != 0) \
568 #ifdef HAVE_LDOUBLE_IEEE_QUAD_LITTLE
569 # define LONGDOUBLE_NAN_ACTION(x, action) \
574 unsigned int man0 : 32; \
575 unsigned int man1 : 32; \
576 unsigned int man2 : 32; \
577 unsigned int man3 : 16; \
578 unsigned int exp : 15; \
579 unsigned int sign : 1; \
583 if (u.s.exp == 0x7FFFL \
584 && (u.s.man0 | u.s.man1 | u.s.man2 | u.s.man3) != 0) \
589 /* Under IEEE rules, NaN is not equal to anything, including itself.
590 "volatile" here stops "cc" on mips64-sgi-irix6.5 from optimizing away
592 #ifndef LONGDOUBLE_NAN_ACTION
593 # define LONGDOUBLE_NAN_ACTION(x, action) \
595 volatile long double __x = LONGDOUBLE_VOLATILE (x); \
599 # define WANT_LONGDOUBLE_VOLATILE 1
602 /* If we don't have a proper "volatile" then volatile is #defined to empty,
603 in this case call through an external function to stop the compiler
604 optimizing anything. */
605 #ifdef WANT_LONGDOUBLE_VOLATILE
607 __MPFR_DECLSPEC long double __gmpfr_longdouble_volatile _MPFR_PROTO ((long double)) MPFR_CONST_ATTR;
608 # define LONGDOUBLE_VOLATILE(x) (__gmpfr_longdouble_volatile (x))
609 # define WANT_GMPFR_LONGDOUBLE_VOLATILE 1
611 # define LONGDOUBLE_VOLATILE(x) (x)
615 /* Some special case for IEEE_EXT Litle Endian */
616 #if HAVE_LDOUBLE_IEEE_EXT_LITTLE
621 unsigned int manl : 32;
622 unsigned int manh : 32;
623 unsigned int expl : 8 ;
624 unsigned int exph : 7;
625 unsigned int sign : 1;
627 } mpfr_long_double_t;
629 /* #undef MPFR_LDBL_MANT_DIG */
630 #undef MPFR_LIMBS_PER_LONG_DOUBLE
631 /* #define MPFR_LDBL_MANT_DIG 64 */
632 #define MPFR_LIMBS_PER_LONG_DOUBLE ((64-1)/GMP_NUMB_BITS+1)
636 /******************************************************
637 *************** _Decimal64 support *******************
638 ******************************************************/
640 #ifdef MPFR_WANT_DECIMAL_FLOATS
641 /* to cast between binary64 and decimal64 */
642 union ieee_double_decimal64 { double d; _Decimal64 d64; };
645 /******************************************************
646 **************** mpfr_t properties *******************
647 ******************************************************/
649 /* In the following macro, p is usually a mpfr_prec_t, but this macro
650 works with other integer types (without integer overflow). Checking
651 that p >= 1 in debug mode is useful here because this macro can be
652 used on a computed precision (in particular, this formula does not
653 work for a degenerate case p = 0, and could give different results
654 on different platforms). But let us not use an assertion checking
655 in the MPFR_LAST_LIMB() and MPFR_LIMB_SIZE() macros below to avoid
656 too much expansion for assertions (in practice, this should be a
657 problem just when testing MPFR with the --enable-assert configure
658 option and the -ansi -pedantic-errors gcc compiler flags). */
659 #define MPFR_PREC2LIMBS(p) \
660 (MPFR_ASSERTD ((p) >= 1), ((p) - 1) / GMP_NUMB_BITS + 1)
662 #define MPFR_PREC(x) ((x)->_mpfr_prec)
663 #define MPFR_EXP(x) ((x)->_mpfr_exp)
664 #define MPFR_MANT(x) ((x)->_mpfr_d)
665 #define MPFR_LAST_LIMB(x) ((MPFR_PREC (x) - 1) / GMP_NUMB_BITS)
666 #define MPFR_LIMB_SIZE(x) (MPFR_LAST_LIMB (x) + 1)
669 /******************************************************
670 **************** exponent properties *****************
671 ******************************************************/
673 /* Limits of the mpfr_exp_t type (NOT those of valid exponent values).
674 These macros can be used in preprocessor directives. */
675 #if _MPFR_EXP_FORMAT == 1
676 # define MPFR_EXP_MAX (SHRT_MAX)
677 # define MPFR_EXP_MIN (SHRT_MIN)
678 #elif _MPFR_EXP_FORMAT == 2
679 # define MPFR_EXP_MAX (INT_MAX)
680 # define MPFR_EXP_MIN (INT_MIN)
681 #elif _MPFR_EXP_FORMAT == 3
682 # define MPFR_EXP_MAX (LONG_MAX)
683 # define MPFR_EXP_MIN (LONG_MIN)
684 #elif _MPFR_EXP_FORMAT == 4
685 # define MPFR_EXP_MAX (MPFR_INTMAX_MAX)
686 # define MPFR_EXP_MIN (MPFR_INTMAX_MIN)
688 # error "Invalid MPFR Exp format"
691 /* Before doing a cast to mpfr_uexp_t, make sure that the value is
693 #define MPFR_UEXP(X) (MPFR_ASSERTD ((X) >= 0), (mpfr_uexp_t) (X))
695 #if MPFR_EXP_MIN >= LONG_MIN && MPFR_EXP_MAX <= LONG_MAX
696 typedef long int mpfr_eexp_t;
697 # define mpfr_get_exp_t(x,r) mpfr_get_si((x),(r))
698 # define mpfr_set_exp_t(x,e,r) mpfr_set_si((x),(e),(r))
699 # define MPFR_EXP_FSPEC "l"
700 #elif defined (_MPFR_H_HAVE_INTMAX_T)
701 typedef intmax_t mpfr_eexp_t;
702 # define mpfr_get_exp_t(x,r) mpfr_get_sj((x),(r))
703 # define mpfr_set_exp_t(x,e,r) mpfr_set_sj((x),(e),(r))
704 # define MPFR_EXP_FSPEC "j"
706 # error "Cannot define mpfr_get_exp_t and mpfr_set_exp_t"
709 /* Invalid exponent value (to track bugs...) */
710 #define MPFR_EXP_INVALID \
711 ((mpfr_exp_t) 1 << (GMP_NUMB_BITS*sizeof(mpfr_exp_t)/sizeof(mp_limb_t)-2))
713 /* Definition of the exponent limits for MPFR numbers.
714 * These limits are chosen so that if e is such an exponent, then 2e-1 and
715 * 2e+1 are representable. This is useful for intermediate computations,
716 * in particular the multiplication.
722 #define MPFR_EMIN_MIN (1-MPFR_EXP_INVALID)
723 #define MPFR_EMIN_MAX (MPFR_EXP_INVALID-1)
724 #define MPFR_EMAX_MIN (1-MPFR_EXP_INVALID)
725 #define MPFR_EMAX_MAX (MPFR_EXP_INVALID-1)
727 /* Use MPFR_GET_EXP and MPFR_SET_EXP instead of MPFR_EXP directly,
728 unless when the exponent may be out-of-range, for instance when
729 setting the exponent before calling mpfr_check_range.
730 MPFR_EXP_CHECK is defined when WANT_ASSERT is defined, but if you
731 don't use WANT_ASSERT (for speed reasons), you can still define
732 MPFR_EXP_CHECK by setting -DMPFR_EXP_CHECK in $CFLAGS. */
734 #ifdef MPFR_EXP_CHECK
735 # define MPFR_GET_EXP(x) (mpfr_get_exp) (x)
736 # define MPFR_SET_EXP(x, exp) MPFR_ASSERTN (!mpfr_set_exp ((x), (exp)))
737 # define MPFR_SET_INVALID_EXP(x) ((void) (MPFR_EXP (x) = MPFR_EXP_INVALID))
739 # define MPFR_GET_EXP(x) MPFR_EXP (x)
740 # define MPFR_SET_EXP(x, exp) ((void) (MPFR_EXP (x) = (exp)))
741 # define MPFR_SET_INVALID_EXP(x) ((void) 0)
746 /******************************************************
747 ********** Singular Values (NAN, INF, ZERO) **********
748 ******************************************************/
750 /* Enum special value of exponent. */
751 # define MPFR_EXP_ZERO (MPFR_EXP_MIN+1)
752 # define MPFR_EXP_NAN (MPFR_EXP_MIN+2)
753 # define MPFR_EXP_INF (MPFR_EXP_MIN+3)
755 #define MPFR_IS_NAN(x) (MPFR_EXP(x) == MPFR_EXP_NAN)
756 #define MPFR_SET_NAN(x) (MPFR_EXP(x) = MPFR_EXP_NAN)
757 #define MPFR_IS_INF(x) (MPFR_EXP(x) == MPFR_EXP_INF)
758 #define MPFR_SET_INF(x) (MPFR_EXP(x) = MPFR_EXP_INF)
759 #define MPFR_IS_ZERO(x) (MPFR_EXP(x) == MPFR_EXP_ZERO)
760 #define MPFR_SET_ZERO(x) (MPFR_EXP(x) = MPFR_EXP_ZERO)
761 #define MPFR_NOTZERO(x) (MPFR_EXP(x) != MPFR_EXP_ZERO)
763 #define MPFR_IS_FP(x) (!MPFR_IS_NAN(x) && !MPFR_IS_INF(x))
764 #define MPFR_IS_SINGULAR(x) (MPFR_EXP(x) <= MPFR_EXP_INF)
765 #define MPFR_IS_PURE_FP(x) (!MPFR_IS_SINGULAR(x) && \
766 (MPFR_ASSERTD ((MPFR_MANT(x)[MPFR_LAST_LIMB(x)] \
767 & MPFR_LIMB_HIGHBIT) != 0), 1))
769 #define MPFR_ARE_SINGULAR(x,y) \
770 (MPFR_UNLIKELY(MPFR_IS_SINGULAR(x)) || MPFR_UNLIKELY(MPFR_IS_SINGULAR(y)))
772 #define MPFR_IS_POWER_OF_2(x) \
773 (mpfr_cmp_ui_2exp ((x), 1, MPFR_GET_EXP (x) - 1) == 0)
776 /******************************************************
777 ********************* Sign Macros ********************
778 ******************************************************/
780 #define MPFR_SIGN_POS (1)
781 #define MPFR_SIGN_NEG (-1)
783 #define MPFR_IS_STRICTPOS(x) (MPFR_NOTZERO((x)) && MPFR_SIGN(x) > 0)
784 #define MPFR_IS_STRICTNEG(x) (MPFR_NOTZERO((x)) && MPFR_SIGN(x) < 0)
786 #define MPFR_IS_NEG(x) (MPFR_SIGN(x) < 0)
787 #define MPFR_IS_POS(x) (MPFR_SIGN(x) > 0)
789 #define MPFR_SET_POS(x) (MPFR_SIGN(x) = MPFR_SIGN_POS)
790 #define MPFR_SET_NEG(x) (MPFR_SIGN(x) = MPFR_SIGN_NEG)
792 #define MPFR_CHANGE_SIGN(x) (MPFR_SIGN(x) = -MPFR_SIGN(x))
793 #define MPFR_SET_SAME_SIGN(x, y) (MPFR_SIGN(x) = MPFR_SIGN(y))
794 #define MPFR_SET_OPPOSITE_SIGN(x, y) (MPFR_SIGN(x) = -MPFR_SIGN(y))
795 #define MPFR_ASSERT_SIGN(s) \
796 (MPFR_ASSERTD((s) == MPFR_SIGN_POS || (s) == MPFR_SIGN_NEG))
797 #define MPFR_SET_SIGN(x, s) \
798 (MPFR_ASSERT_SIGN(s), MPFR_SIGN(x) = s)
799 #define MPFR_IS_POS_SIGN(s1) (s1 > 0)
800 #define MPFR_IS_NEG_SIGN(s1) (s1 < 0)
801 #define MPFR_MULT_SIGN(s1, s2) ((s1) * (s2))
802 /* Transform a sign to 1 or -1 */
803 #define MPFR_FROM_SIGN_TO_INT(s) (s)
804 #define MPFR_INT_SIGN(x) MPFR_FROM_SIGN_TO_INT(MPFR_SIGN(x))
808 /******************************************************
809 ***************** Ternary Value Macros ***************
810 ******************************************************/
812 /* Special inexact value */
813 #define MPFR_EVEN_INEX 2
815 /* Macros for functions returning two inexact values in an 'int' */
816 #define INEXPOS(y) ((y) == 0 ? 0 : (((y) > 0) ? 1 : 2))
817 #define INEX(y,z) (INEXPOS(y) | (INEXPOS(z) << 2))
819 /* When returning the ternary inexact value, ALWAYS use one of the
820 following two macros, unless the flag comes from another function
821 returning the ternary inexact value */
822 #define MPFR_RET(I) return \
823 (I) ? ((__gmpfr_flags |= MPFR_FLAGS_INEXACT), (I)) : 0
824 #define MPFR_RET_NAN return (__gmpfr_flags |= MPFR_FLAGS_NAN), 0
826 #define MPFR_SET_ERANGE() (__gmpfr_flags |= MPFR_FLAGS_ERANGE)
828 #define SIGN(I) ((I) < 0 ? -1 : (I) > 0)
829 #define SAME_SIGN(I1,I2) (SIGN (I1) == SIGN (I2))
833 /******************************************************
834 ************** Rounding mode macros *****************
835 ******************************************************/
837 /* MPFR_RND_MAX gives the number of supported rounding modes by all functions.
838 * Once faithful rounding is implemented, MPFR_RNDA should be changed
839 * to MPFR_RNDF. But this will also require more changes in the tests.
841 #define MPFR_RND_MAX ((mpfr_rnd_t)((MPFR_RNDA)+1))
843 /* We want to test this :
844 * (rnd == MPFR_RNDU && test) || (rnd == RNDD && !test)
845 * ie it transforms RNDU or RNDD to Away or Zero according to the sign */
846 #define MPFR_IS_RNDUTEST_OR_RNDDNOTTEST(rnd, test) \
847 (((rnd) + (test)) == MPFR_RNDD)
849 /* We want to test if rnd = Zero, or Away.
850 'test' is 1 if negative, and 0 if positive. */
851 #define MPFR_IS_LIKE_RNDZ(rnd, test) \
852 ((rnd==MPFR_RNDZ) || MPFR_IS_RNDUTEST_OR_RNDDNOTTEST (rnd, test))
854 #define MPFR_IS_LIKE_RNDU(rnd, sign) \
855 ((rnd==MPFR_RNDU) || (rnd==MPFR_RNDZ && sign<0) || (rnd==MPFR_RNDA && sign>0))
857 #define MPFR_IS_LIKE_RNDD(rnd, sign) \
858 ((rnd==MPFR_RNDD) || (rnd==MPFR_RNDZ && sign>0) || (rnd==MPFR_RNDA && sign<0))
860 /* Invert a rounding mode, RNDZ and RNDA are unchanged */
861 #define MPFR_INVERT_RND(rnd) ((rnd == MPFR_RNDU) ? MPFR_RNDD : \
862 ((rnd == MPFR_RNDD) ? MPFR_RNDU : rnd))
864 /* Transform RNDU and RNDD to RNDZ according to test */
865 #define MPFR_UPDATE_RND_MODE(rnd, test) \
867 if (MPFR_UNLIKELY(MPFR_IS_RNDUTEST_OR_RNDDNOTTEST(rnd, test))) \
871 /* Transform RNDU and RNDD to RNDZ or RNDA according to sign,
872 leave the other modes unchanged */
873 #define MPFR_UPDATE2_RND_MODE(rnd, sign) \
875 if (rnd == MPFR_RNDU) \
876 rnd = (sign > 0) ? MPFR_RNDA : MPFR_RNDZ; \
877 else if (rnd == MPFR_RNDD) \
878 rnd = (sign < 0) ? MPFR_RNDA : MPFR_RNDZ; \
882 /******************************************************
883 ******************* Limb Macros **********************
884 ******************************************************/
886 /* Definition of MPFR_LIMB_HIGHBIT */
887 #if defined(GMP_LIMB_HIGHBIT)
888 # define MPFR_LIMB_HIGHBIT GMP_LIMB_HIGHBIT
889 #elif defined(MP_LIMB_T_HIGHBIT)
890 # define MPFR_LIMB_HIGHBIT MP_LIMB_T_HIGHBIT
892 # error "Neither GMP_LIMB_HIGHBIT nor MP_LIMB_T_HIGHBIT defined in GMP"
895 /* Mask to get the Most Significant Bit of a limb */
896 #define MPFR_LIMB_MSB(l) ((l)&MPFR_LIMB_HIGHBIT)
898 /* Definition of MPFR_LIMB_ONE & MPFR_LIMB_ZERO */
900 # define MPFR_LIMB_ONE CNST_LIMB(1)
901 # define MPFR_LIMB_ZERO CNST_LIMB(0)
903 # define MPFR_LIMB_ONE ((mp_limb_t) 1L)
904 # define MPFR_LIMB_ZERO ((mp_limb_t) 0L)
907 /* Mask for the low 's' bits of a limb */
908 #define MPFR_LIMB_MASK(s) ((MPFR_LIMB_ONE<<(s))-MPFR_LIMB_ONE)
912 /******************************************************
913 ********************** Memory ************************
914 ******************************************************/
916 /* Heap Memory gestion */
917 typedef union { mp_size_t s; mp_limb_t l; } mpfr_size_limb_t;
918 #define MPFR_GET_ALLOC_SIZE(x) \
919 ( ((mp_size_t*) MPFR_MANT(x))[-1] + 0)
920 #define MPFR_SET_ALLOC_SIZE(x, n) \
921 ( ((mp_size_t*) MPFR_MANT(x))[-1] = n)
922 #define MPFR_MALLOC_SIZE(s) \
923 ( sizeof(mpfr_size_limb_t) + BYTES_PER_MP_LIMB * ((size_t) s) )
924 #define MPFR_SET_MANT_PTR(x,p) \
925 (MPFR_MANT(x) = (mp_limb_t*) ((mpfr_size_limb_t*) p + 1))
926 #define MPFR_GET_REAL_PTR(x) \
927 ((mp_limb_t*) ((mpfr_size_limb_t*) MPFR_MANT(x) - 1))
929 /* Temporary memory gestion */
931 /* GMP 4.1.x or below or internals */
932 #define MPFR_TMP_DECL TMP_DECL
933 #define MPFR_TMP_MARK TMP_MARK
934 #define MPFR_TMP_ALLOC TMP_ALLOC
935 #define MPFR_TMP_FREE TMP_FREE
937 #define MPFR_TMP_DECL(x) TMP_DECL
938 #define MPFR_TMP_MARK(x) TMP_MARK
939 #define MPFR_TMP_ALLOC(s) TMP_ALLOC(s)
940 #define MPFR_TMP_FREE(x) TMP_FREE
943 /* This code is experimental: don't use it */
944 #ifdef MPFR_USE_OWN_MPFR_TMP_ALLOC
945 extern unsigned char *mpfr_stack;
948 #undef MPFR_TMP_ALLOC
950 #define MPFR_TMP_DECL(_x) unsigned char *(_x)
951 #define MPFR_TMP_MARK(_x) ((_x) = mpfr_stack)
952 #define MPFR_TMP_ALLOC(_s) (mpfr_stack += (_s), mpfr_stack - (_s))
953 #define MPFR_TMP_FREE(_x) (mpfr_stack = (_x))
956 #define MPFR_TMP_LIMBS_ALLOC(N) \
957 ((mp_limb_t *) MPFR_TMP_ALLOC ((size_t) (N) * BYTES_PER_MP_LIMB))
959 /* temporary allocate 1 limb at xp, and initialize mpfr variable x */
960 /* The temporary var doesn't have any size field, but it doesn't matter
961 * since only functions dealing with the Heap care about it */
962 #define MPFR_TMP_INIT1(xp, x, p) \
963 ( MPFR_PREC(x) = (p), \
964 MPFR_MANT(x) = (xp), \
966 MPFR_SET_INVALID_EXP(x))
968 #define MPFR_TMP_INIT(xp, x, p, s) \
969 (xp = MPFR_TMP_LIMBS_ALLOC(s), \
970 MPFR_TMP_INIT1(xp, x, p))
972 #define MPFR_TMP_INIT_ABS(d, s) \
973 ( MPFR_PREC(d) = MPFR_PREC(s), \
974 MPFR_MANT(d) = MPFR_MANT(s), \
976 MPFR_EXP(d) = MPFR_EXP(s))
980 /******************************************************
981 ***************** Cache macros **********************
982 ******************************************************/
984 #define mpfr_const_pi(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_pi,_r)
985 #define mpfr_const_log2(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_log2, _r)
986 #define mpfr_const_euler(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_euler, _r)
987 #define mpfr_const_catalan(_d,_r) mpfr_cache(_d,__gmpfr_cache_const_catalan,_r)
989 #define MPFR_DECL_INIT_CACHE(_cache,_func) \
990 mpfr_cache_t MPFR_THREAD_ATTR _cache = \
991 {{{{0,MPFR_SIGN_POS,0,(mp_limb_t*)0}},0,_func}}
995 /******************************************************
996 ******************* Threshold ***********************
997 ******************************************************/
1001 /******************************************************
1002 ***************** Useful macros *********************
1003 ******************************************************/
1005 /* Theses macros help the compiler to determine if a test is
1006 likely or unlikely. The !! is necessary in case x is larger
1008 #if __MPFR_GNUC(3,0) || __MPFR_ICC(8,1,0)
1009 # define MPFR_LIKELY(x) (__builtin_expect(!!(x),1))
1010 # define MPFR_UNLIKELY(x) (__builtin_expect(!!(x),0))
1012 # define MPFR_LIKELY(x) (x)
1013 # define MPFR_UNLIKELY(x) (x)
1016 /* Declare that some variable is initialized before being used (without a
1017 dummy initialization) in order to avoid some compiler warnings. Use the
1018 VAR = VAR trick (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36296)
1019 only with gcc as this is undefined behavior, and we don't know what
1020 other compilers do (they may also be smarter). This trick could be
1021 disabled with future gcc versions. */
1022 #if defined(__GNUC__)
1023 # define INITIALIZED(VAR) VAR = VAR
1025 # define INITIALIZED(VAR) VAR
1028 /* Ceil log 2: If GCC, uses a GCC extension, otherwise calls a function */
1030 * Needs to define MPFR_NEED_LONGLONG.
1031 * Computes ceil(log2(x)) only for x integer (unsigned long)
1032 * Undefined if x is 0 */
1033 #if __MPFR_GNUC(2,95) || __MPFR_ICC(8,1,0)
1034 # define MPFR_INT_CEIL_LOG2(x) \
1035 (MPFR_UNLIKELY ((x) == 1) ? 0 : \
1036 __extension__ ({ int _b; mp_limb_t _limb; \
1037 MPFR_ASSERTN ((x) > 1); \
1039 MPFR_ASSERTN (_limb == (x) - 1); \
1040 count_leading_zeros (_b, _limb); \
1041 (GMP_NUMB_BITS - _b); }))
1043 # define MPFR_INT_CEIL_LOG2(x) (__gmpfr_int_ceil_log2(x))
1046 /* Add two integers with overflow handling */
1047 /* Example: MPFR_SADD_OVERFLOW (c, a, b, long, unsigned long,
1048 * LONG_MIN, LONG_MAX,
1049 * goto overflow, goto underflow); */
1050 #define MPFR_UADD_OVERFLOW(c,a,b,ACTION_IF_OVERFLOW) \
1053 if ((c) < (a)) ACTION_IF_OVERFLOW; \
1056 #define MPFR_SADD_OVERFLOW(c,a,b,STYPE,UTYPE,MIN,MAX,ACTION_IF_POS_OVERFLOW,ACTION_IF_NEG_OVERFLOW) \
1058 if ((a) >= 0 && (b) >= 0) { \
1060 ua = (UTYPE) (a); ub = (UTYPE) (b); \
1061 MPFR_UADD_OVERFLOW (uc, ua, ub, ACTION_IF_POS_OVERFLOW); \
1062 if (uc > (UTYPE)(MAX)) ACTION_IF_POS_OVERFLOW; \
1063 else (c) = (STYPE) uc; \
1064 } else if ((a) < 0 && (b) < 0) { \
1066 ua = -(UTYPE) (a); ub = -(UTYPE) (b); \
1067 MPFR_UADD_OVERFLOW (uc, ua, ub, ACTION_IF_NEG_OVERFLOW); \
1068 if (uc >= -(UTYPE)(MIN) || uc > (UTYPE)(MAX)) { \
1069 if (uc == -(UTYPE)(MIN)) (c) = (MIN); \
1070 else ACTION_IF_NEG_OVERFLOW; } \
1071 else (c) = -(STYPE) uc; \
1072 } else (c) = (a) + (b); \
1076 /* Set a number to 1 (Fast) - It doesn't check if 1 is in the exponent range */
1077 #define MPFR_SET_ONE(x) \
1079 mp_size_t _size = MPFR_LAST_LIMB(x); \
1082 MPN_ZERO ( MPFR_MANT(x), _size); \
1083 MPFR_MANT(x)[_size] = MPFR_LIMB_HIGHBIT; \
1086 /* Compute s = (-a) % GMP_NUMB_BITS as unsigned */
1087 #define MPFR_UNSIGNED_MINUS_MODULO(s, a) \
1090 if (IS_POW2 (GMP_NUMB_BITS)) \
1091 (s) = (- (unsigned int) (a)) % GMP_NUMB_BITS; \
1094 (s) = (a) % GMP_NUMB_BITS; \
1096 (s) = GMP_NUMB_BITS - (s); \
1098 MPFR_ASSERTD ((s) >= 0 && (s) < GMP_NUMB_BITS); \
1102 /* Use it only for debug reasons */
1103 /* MPFR_TRACE (operation) : execute operation iff DEBUG flag is set */
1104 /* MPFR_DUMP (x) : print x (a mpfr_t) on stdout */
1106 # define MPFR_TRACE(x) x
1108 # define MPFR_TRACE(x) (void) 0
1110 #define MPFR_DUMP(x) ( printf(#x"="), mpfr_dump(x) )
1112 /* Test if X (positive) is a power of 2 */
1113 #define IS_POW2(X) (((X) & ((X) - 1)) == 0)
1114 #define NOT_POW2(X) (((X) & ((X) - 1)) != 0)
1116 /* Safe absolute value (to avoid possible integer overflow) */
1117 /* type is the target (unsigned) type */
1118 #define SAFE_ABS(type,x) ((x) >= 0 ? (type)(x) : -(type)(x))
1120 #define mpfr_get_d1(x) mpfr_get_d(x,__gmpfr_default_rounding_mode)
1122 /* Store in r the size in bits of the mpz_t z */
1123 #define MPFR_MPZ_SIZEINBASE2(r, z) \
1127 MPFR_ASSERTD (mpz_sgn (z) != 0); \
1129 count_leading_zeros (_cnt, PTR(z)[_size-1]); \
1130 (r) = _size * GMP_NUMB_BITS - _cnt; \
1133 /* Needs <locale.h> */
1134 #ifdef HAVE_LOCALE_H
1136 /* Warning! In case of signed char, the value of MPFR_DECIMAL_POINT may
1137 be negative (the ISO C99 does not seem to forbid negative values). */
1138 #define MPFR_DECIMAL_POINT (localeconv()->decimal_point[0])
1139 #define MPFR_THOUSANDS_SEPARATOR (localeconv()->thousands_sep[0])
1141 #define MPFR_DECIMAL_POINT ((char) '.')
1142 #define MPFR_THOUSANDS_SEPARATOR ('\0')
1146 /* Set y to s*significand(x)*2^e, for example MPFR_ALIAS(y,x,1,MPFR_EXP(x))
1147 sets y to |x|, and MPFR_ALIAS(y,x,MPFR_SIGN(x),0) sets y to x*2^f such
1148 that 1/2 <= |y| < 1. Does not check y is in the valid exponent range.
1149 WARNING! x and y share the same mantissa. So, some operations are
1150 not valid if x has been provided via an argument, e.g., trying to
1151 modify the mantissa of y, even temporarily, or calling mpfr_clear on y.
1153 #define MPFR_ALIAS(y,x,s,e) \
1156 MPFR_PREC(y) = MPFR_PREC(x); \
1157 MPFR_SIGN(y) = (s); \
1158 MPFR_EXP(y) = (e); \
1159 MPFR_MANT(y) = MPFR_MANT(x); \
1163 /******************************************************
1164 ************** Save exponent macros ****************
1165 ******************************************************/
1167 /* See README.dev for details on how to use the macros.
1168 They are used to set the exponent range to the maximum
1172 unsigned int saved_flags;
1173 mpfr_exp_t saved_emin;
1174 mpfr_exp_t saved_emax;
1177 /* Minimum and maximum exponents of the extended exponent range. */
1178 #define MPFR_EXT_EMIN MPFR_EMIN_MIN
1179 #define MPFR_EXT_EMAX MPFR_EMAX_MAX
1181 #define MPFR_SAVE_EXPO_DECL(x) mpfr_save_expo_t x
1182 #define MPFR_SAVE_EXPO_MARK(x) \
1183 ((x).saved_flags = __gmpfr_flags, \
1184 (x).saved_emin = __gmpfr_emin, \
1185 (x).saved_emax = __gmpfr_emax, \
1186 __gmpfr_emin = MPFR_EXT_EMIN, \
1187 __gmpfr_emax = MPFR_EXT_EMAX)
1188 #define MPFR_SAVE_EXPO_FREE(x) \
1189 (__gmpfr_flags = (x).saved_flags, \
1190 __gmpfr_emin = (x).saved_emin, \
1191 __gmpfr_emax = (x).saved_emax)
1192 #define MPFR_SAVE_EXPO_UPDATE_FLAGS(x, flags) \
1193 (x).saved_flags |= (flags)
1195 /* Speed up final checking */
1196 #define mpfr_check_range(x,t,r) \
1197 (MPFR_LIKELY (MPFR_EXP (x) >= __gmpfr_emin && MPFR_EXP (x) <= __gmpfr_emax) \
1198 ? ((t) ? (__gmpfr_flags |= MPFR_FLAGS_INEXACT, (t)) : 0) \
1199 : mpfr_check_range(x,t,r))
1202 /******************************************************
1203 ***************** Inline Rounding *******************
1204 ******************************************************/
1207 * Note: due to the labels, one cannot use a macro MPFR_RNDRAW* more than
1208 * once in a function (otherwise these labels would not be unique).
1212 * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd
1213 * assuming dest's sign is sign.
1214 * In rounding to nearest mode, execute MIDDLE_HANDLER when the value
1215 * is the middle of two consecutive numbers in dest precision.
1216 * Execute OVERFLOW_HANDLER in case of overflow when rounding.
1218 #define MPFR_RNDRAW_GEN(inexact, dest, srcp, sprec, rnd, sign, \
1219 MIDDLE_HANDLER, OVERFLOW_HANDLER) \
1221 mp_size_t _dests, _srcs; \
1222 mp_limb_t *_destp; \
1223 mpfr_prec_t _destprec, _srcprec; \
1225 /* Check Trivial Case when Dest Mantissa has more bits than source */ \
1226 _srcprec = (sprec); \
1227 _destprec = MPFR_PREC (dest); \
1228 _destp = MPFR_MANT (dest); \
1229 if (MPFR_UNLIKELY (_destprec >= _srcprec)) \
1231 _srcs = MPFR_PREC2LIMBS (_srcprec); \
1232 _dests = MPFR_PREC2LIMBS (_destprec) - _srcs; \
1233 MPN_COPY (_destp + _dests, srcp, _srcs); \
1234 MPN_ZERO (_destp, _dests); \
1239 /* Non trivial case: rounding needed */ \
1242 mp_limb_t _rb, _sb, _ulp; \
1244 /* Compute Position and shift */ \
1245 _srcs = MPFR_PREC2LIMBS (_srcprec); \
1246 _dests = MPFR_PREC2LIMBS (_destprec); \
1247 MPFR_UNSIGNED_MINUS_MODULO (_sh, _destprec); \
1248 _sp = (srcp) + _srcs - _dests; \
1250 /* General case when prec % GMP_NUMB_BITS != 0 */ \
1251 if (MPFR_LIKELY (_sh != 0)) \
1254 /* Compute Rounding Bit and Sticky Bit */ \
1255 /* Note: in directed rounding modes, if the rounding bit */ \
1256 /* is 1, the behavior does not depend on the sticky bit; */ \
1257 /* thus we will not try to compute it in this case (this */ \
1258 /* can be much faster and avoids to read uninitialized */ \
1259 /* data in the current mpfr_mul implementation). We just */ \
1260 /* make sure that _sb is initialized. */ \
1261 _mask = MPFR_LIMB_ONE << (_sh - 1); \
1262 _rb = _sp[0] & _mask; \
1263 _sb = _sp[0] & (_mask - 1); \
1264 if (MPFR_UNLIKELY (_sb == 0) && \
1265 ((rnd) == MPFR_RNDN || _rb == 0)) \
1266 { /* TODO: Improve it */ \
1269 for (_tmp = _sp, _n = _srcs - _dests ; \
1270 _n != 0 && _sb == 0 ; _n--) \
1275 else /* _sh == 0 */ \
1277 MPFR_ASSERTD (_dests < _srcs); \
1278 /* Compute Rounding Bit and Sticky Bit - see note above */ \
1279 _rb = _sp[-1] & MPFR_LIMB_HIGHBIT; \
1280 _sb = _sp[-1] & (MPFR_LIMB_HIGHBIT-1); \
1281 if (MPFR_UNLIKELY (_sb == 0) && \
1282 ((rnd) == MPFR_RNDN || _rb == 0)) \
1286 for (_tmp = _sp - 1, _n = _srcs - _dests - 1 ; \
1287 _n != 0 && _sb == 0 ; _n--) \
1290 _ulp = MPFR_LIMB_ONE; \
1293 if (MPFR_LIKELY (rnd == MPFR_RNDN)) \
1298 inexact = MPFR_LIKELY ((_sb | _rb) != 0) ? -sign : 0; \
1300 MPN_COPY (_destp, _sp, _dests); \
1301 _destp[0] &= ~(_ulp - 1); \
1303 else if (MPFR_UNLIKELY (_sb == 0)) \
1304 { /* Middle of two consecutive representable numbers */ \
1310 goto addoneulp_doit; /* dummy code to avoid warning */ \
1314 if (MPFR_UNLIKELY (mpn_add_1 (_destp, _sp, _dests, _ulp))) \
1316 _destp[_dests - 1] = MPFR_LIMB_HIGHBIT; \
1319 _destp[0] &= ~(_ulp - 1); \
1323 { /* Directed rounding mode */ \
1324 if (MPFR_LIKELY (MPFR_IS_LIKE_RNDZ (rnd, \
1325 MPFR_IS_NEG_SIGN (sign)))) \
1327 else if (MPFR_UNLIKELY ((_sb | _rb) == 0)) \
1339 * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd
1340 * assuming dest's sign is sign.
1341 * Execute OVERFLOW_HANDLER in case of overflow when rounding.
1343 #define MPFR_RNDRAW(inexact, dest, srcp, sprec, rnd, sign, OVERFLOW_HANDLER) \
1344 MPFR_RNDRAW_GEN (inexact, dest, srcp, sprec, rnd, sign, \
1345 if ((_sp[0] & _ulp) == 0) \
1355 * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd
1356 * assuming dest's sign is sign.
1357 * Execute OVERFLOW_HANDLER in case of overflow when rounding.
1358 * Set inexact to +/- MPFR_EVEN_INEX in case of even rounding.
1360 #define MPFR_RNDRAW_EVEN(inexact, dest, srcp, sprec, rnd, sign, \
1362 MPFR_RNDRAW_GEN (inexact, dest, srcp, sprec, rnd, sign, \
1363 if ((_sp[0] & _ulp) == 0) \
1365 inexact = -MPFR_EVEN_INEX * sign; \
1370 inexact = MPFR_EVEN_INEX * sign; \
1371 goto addoneulp_doit; \
1375 /* Return TRUE if b is non singular and we can round it to precision 'prec'
1376 and determine the ternary value, with rounding mode 'rnd', and with
1377 error at most 'error' */
1378 #define MPFR_CAN_ROUND(b,err,prec,rnd) \
1379 (!MPFR_IS_SINGULAR (b) && mpfr_round_p (MPFR_MANT (b), MPFR_LIMB_SIZE (b), \
1380 (err), (prec) + ((rnd)==MPFR_RNDN)))
1382 /* Copy the sign and the significand, and handle the exponent in exp. */
1383 #define MPFR_SETRAW(inexact,dest,src,exp,rnd) \
1384 if (MPFR_UNLIKELY (dest != src)) \
1386 MPFR_SET_SIGN (dest, MPFR_SIGN (src)); \
1387 if (MPFR_LIKELY (MPFR_PREC (dest) == MPFR_PREC (src))) \
1389 MPN_COPY (MPFR_MANT (dest), MPFR_MANT (src), \
1390 MPFR_LIMB_SIZE (src)); \
1395 MPFR_RNDRAW (inexact, dest, MPFR_MANT (src), MPFR_PREC (src), \
1396 rnd, MPFR_SIGN (src), exp++); \
1402 /* TODO: fix this description (see round_near_x.c). */
1403 /* Assuming that the function has a Taylor expansion which looks like:
1404 y=o(f(x)) = o(v + g(x)) with |g(x)| <= 2^(EXP(v)-err)
1405 we can quickly set y to v if x is small (ie err > prec(y)+1) in most
1406 cases. It assumes that f(x) is not representable exactly as a FP number.
1407 v must not be a singular value (NAN, INF or ZERO); usual values are
1410 y is the destination (a mpfr_t), v the value to set (a mpfr_t),
1411 err1+err2 with err2 <= 3 the error term (mpfr_exp_t's), dir (an int) is
1412 the direction of the committed error (if dir = 0, it rounds toward 0,
1413 if dir=1, it rounds away from 0), rnd the rounding mode.
1415 It returns from the function a ternary value in case of success.
1416 If you want to free something, you must fill the "extra" field
1417 in consequences, otherwise put nothing in it.
1419 The test is less restrictive than necessary, but the function
1420 will finish the check itself.
1422 Note: err1 + err2 is allowed to overflow as mpfr_exp_t, but it must give
1423 its real value as mpfr_uexp_t.
1425 #define MPFR_FAST_COMPUTE_IF_SMALL_INPUT(y,v,err1,err2,dir,rnd,extra) \
1427 mpfr_ptr _y = (y); \
1428 mpfr_exp_t _err1 = (err1); \
1429 mpfr_exp_t _err2 = (err2); \
1432 mpfr_uexp_t _err = (mpfr_uexp_t) _err1 + _err2; \
1433 if (MPFR_UNLIKELY (_err > MPFR_PREC (_y) + 1)) \
1435 int _inexact = mpfr_round_near_x (_y,(v),_err,(dir),(rnd)); \
1436 if (_inexact != 0) \
1445 /* Variant, to be called somewhere after MPFR_SAVE_EXPO_MARK. This variant
1446 is needed when there are some computations before or when some non-zero
1447 real constant is used, such as __gmpfr_one for mpfr_cos. */
1448 #define MPFR_SMALL_INPUT_AFTER_SAVE_EXPO(y,v,err1,err2,dir,rnd,expo,extra) \
1450 mpfr_ptr _y = (y); \
1451 mpfr_exp_t _err1 = (err1); \
1452 mpfr_exp_t _err2 = (err2); \
1455 mpfr_uexp_t _err = (mpfr_uexp_t) _err1 + _err2; \
1456 if (MPFR_UNLIKELY (_err > MPFR_PREC (_y) + 1)) \
1459 mpfr_clear_flags (); \
1460 _inexact = mpfr_round_near_x (_y,(v),_err,(dir),(rnd)); \
1461 if (_inexact != 0) \
1464 MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags); \
1465 MPFR_SAVE_EXPO_FREE (expo); \
1466 return mpfr_check_range (_y, _inexact, (rnd)); \
1472 /******************************************************
1473 *************** Ziv Loop Macro *********************
1474 ******************************************************/
1476 #ifndef MPFR_USE_LOGGING
1478 #define MPFR_ZIV_DECL(_x) mpfr_prec_t _x
1479 #define MPFR_ZIV_INIT(_x, _p) (_x) = GMP_NUMB_BITS
1480 #define MPFR_ZIV_NEXT(_x, _p) ((_p) += (_x), (_x) = (_p)/2)
1481 #define MPFR_ZIV_FREE(x)
1485 /* The following test on glibc is there mainly for Darwin (Mac OS X), to
1486 obtain a better error message. The real test should have been a test
1487 concerning nested functions in gcc, which are disabled by default on
1488 Darwin; but it is not possible to do that without a configure test. */
1489 # if defined (__cplusplus) || !(__MPFR_GNUC(3,0) && __MPFR_GLIBC(2,0))
1490 # error "Logging not supported (needs gcc >= 3.0 and GNU C Library >= 2.0)."
1495 /* Note: the mpfr_log_level >= 0 below avoids to take into account
1496 Ziv loops used by the MPFR functions called by the mpfr_fprintf
1499 #define MPFR_ZIV_DECL(_x) \
1501 int _x ## _cpt = 1; \
1502 static unsigned long _x ## _loop = 0, _x ## _bad = 0; \
1503 static const char *_x ## _fname = __func__; \
1504 auto void __attribute__ ((destructor)) x ## _f (void); \
1505 void __attribute__ ((destructor)) x ## _f (void) { \
1506 if (_x ## _loop != 0 && (MPFR_LOG_STAT_F & mpfr_log_type)) \
1507 fprintf (mpfr_log_file, \
1508 "%s: Ziv failed %2.2f%% (%lu bad cases / %lu calls)\n", \
1509 _x ## _fname, (double) 100.0 * _x ## _bad / _x ## _loop, \
1510 _x ## _bad, _x ## _loop ); }
1512 #define MPFR_ZIV_INIT(_x, _p) \
1515 (_x) = GMP_NUMB_BITS; \
1516 if (mpfr_log_level >= 0) \
1518 if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && \
1519 (mpfr_log_current <= mpfr_log_level)) \
1520 LOG_PRINT ("%s:ZIV 1st prec=%Pd\n", \
1521 __func__, (mpfr_prec_t) (_p)); \
1525 #define MPFR_ZIV_NEXT(_x, _p) \
1530 if (mpfr_log_level >= 0) \
1531 _x ## _bad += (_x ## _cpt == 1); \
1533 if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && \
1534 (mpfr_log_current <= mpfr_log_level)) \
1535 LOG_PRINT ("%s:ZIV new prec=%Pd\n", \
1536 __func__, (mpfr_prec_t) (_p)); \
1540 #define MPFR_ZIV_FREE(_x) \
1543 if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && _x ## _cpt > 1 && \
1544 (mpfr_log_current <= mpfr_log_level)) \
1545 fprintf (mpfr_log_file, "%s:ZIV %d loops\n", \
1546 __func__, _x ## _cpt); \
1553 /******************************************************
1554 *************** Logging Macros *********************
1555 ******************************************************/
1557 /* The different kind of LOG */
1558 #define MPFR_LOG_INPUT_F 1
1559 #define MPFR_LOG_OUTPUT_F 2
1560 #define MPFR_LOG_INTERNAL_F 4
1561 #define MPFR_LOG_TIME_F 8
1562 #define MPFR_LOG_BADCASE_F 16
1563 #define MPFR_LOG_MSG_F 32
1564 #define MPFR_LOG_STAT_F 64
1566 #ifdef MPFR_USE_LOGGING
1568 /* Check if we can support this feature */
1569 # ifdef MPFR_USE_THREAD_SAFE
1570 # error "Enable either `Logging' or `thread-safe', not both"
1572 # if !__MPFR_GNUC(3,0)
1573 # error "Logging not supported (GCC >= 3.0)"
1576 #if defined (__cplusplus)
1580 __MPFR_DECLSPEC extern FILE *mpfr_log_file;
1581 __MPFR_DECLSPEC extern int mpfr_log_type;
1582 __MPFR_DECLSPEC extern int mpfr_log_level;
1583 __MPFR_DECLSPEC extern int mpfr_log_current;
1584 __MPFR_DECLSPEC extern mpfr_prec_t mpfr_log_prec;
1586 #if defined (__cplusplus)
1590 /* LOG_PRINT calls mpfr_fprintf on mpfr_log_file with logging disabled
1591 (recursive logging is not wanted and freezes MPFR). */
1592 #define LOG_PRINT(format, ...) \
1595 int old_level = mpfr_log_level; \
1596 mpfr_log_level = -1; /* disable logging in mpfr_fprintf */ \
1597 __gmpfr_cache_const_pi = __gmpfr_logging_pi; \
1598 __gmpfr_cache_const_log2 = __gmpfr_logging_log2; \
1599 mpfr_fprintf (mpfr_log_file, format, __VA_ARGS__); \
1600 mpfr_log_level = old_level; \
1601 __gmpfr_cache_const_pi = __gmpfr_normal_pi; \
1602 __gmpfr_cache_const_log2 = __gmpfr_normal_log2; \
1606 #define MPFR_LOG_VAR(x) \
1608 if ((MPFR_LOG_INTERNAL_F & mpfr_log_type) && \
1609 (mpfr_log_current <= mpfr_log_level)) \
1610 LOG_PRINT ("%s.%d:%s[%#Pu]=%.*Rg\n", __func__, __LINE__, \
1611 #x, mpfr_get_prec (x), mpfr_log_prec, x); \
1614 #define MPFR_LOG_MSG2(format, ...) \
1616 if ((MPFR_LOG_MSG_F & mpfr_log_type) && \
1617 (mpfr_log_current <= mpfr_log_level)) \
1618 LOG_PRINT ("%s.%d: "format, __func__, __LINE__, __VA_ARGS__); \
1620 #define MPFR_LOG_MSG(x) MPFR_LOG_MSG2 x
1622 #define MPFR_LOG_BEGIN2(format, ...) \
1623 mpfr_log_current ++; \
1624 if ((MPFR_LOG_INPUT_F & mpfr_log_type) && \
1625 (mpfr_log_current <= mpfr_log_level)) \
1626 LOG_PRINT ("%s:IN "format"\n", __func__, __VA_ARGS__); \
1627 if ((MPFR_LOG_TIME_F & mpfr_log_type) && \
1628 (mpfr_log_current <= mpfr_log_level)) \
1629 __gmpfr_log_time = mpfr_get_cputime ();
1630 #define MPFR_LOG_BEGIN(x) \
1631 int __gmpfr_log_time = 0; \
1634 #define MPFR_LOG_END2(format, ...) \
1635 if ((MPFR_LOG_TIME_F & mpfr_log_type) && \
1636 (mpfr_log_current <= mpfr_log_level)) \
1637 fprintf (mpfr_log_file, "%s:TIM %dms\n", __mpfr_log_fname, \
1638 mpfr_get_cputime () - __gmpfr_log_time); \
1639 if ((MPFR_LOG_OUTPUT_F & mpfr_log_type) && \
1640 (mpfr_log_current <= mpfr_log_level)) \
1641 LOG_PRINT ("%s:OUT "format"\n", __mpfr_log_fname, __VA_ARGS__); \
1642 mpfr_log_current --;
1643 #define MPFR_LOG_END(x) \
1644 static const char *__mpfr_log_fname = __func__; \
1647 #define MPFR_LOG_FUNC(begin,end) \
1648 static const char *__mpfr_log_fname = __func__; \
1649 auto void __mpfr_log_cleanup (int *time); \
1650 void __mpfr_log_cleanup (int *time) { \
1651 int __gmpfr_log_time = *time; \
1652 MPFR_LOG_END2 end; } \
1653 int __gmpfr_log_time __attribute__ ((cleanup (__mpfr_log_cleanup))); \
1654 __gmpfr_log_time = 0; \
1655 MPFR_LOG_BEGIN2 begin
1657 #else /* MPFR_USE_LOGGING */
1659 /* Define void macro for logging */
1661 #define MPFR_LOG_VAR(x)
1662 #define MPFR_LOG_BEGIN(x)
1663 #define MPFR_LOG_END(x)
1664 #define MPFR_LOG_MSG(x)
1665 #define MPFR_LOG_FUNC(x,y)
1667 #endif /* MPFR_USE_LOGGING */
1670 /**************************************************************
1671 ************ Group Initialize Functions Macros *************
1672 **************************************************************/
1674 #ifndef MPFR_GROUP_STATIC_SIZE
1675 # define MPFR_GROUP_STATIC_SIZE 16
1678 struct mpfr_group_t {
1681 mp_limb_t tab[MPFR_GROUP_STATIC_SIZE];
1684 #define MPFR_GROUP_DECL(g) struct mpfr_group_t g
1685 #define MPFR_GROUP_CLEAR(g) do { \
1686 MPFR_LOG_MSG (("GROUP_CLEAR: ptr = 0x%lX, size = %lu\n", \
1687 (unsigned long) (g).mant, \
1688 (unsigned long) (g).alloc)); \
1689 if (MPFR_UNLIKELY ((g).alloc != 0)) { \
1690 MPFR_ASSERTD ((g).mant != (g).tab); \
1691 (*__gmp_free_func) ((g).mant, (g).alloc); \
1694 #define MPFR_GROUP_INIT_TEMPLATE(g, prec, num, handler) do { \
1695 mpfr_prec_t _prec = (prec); \
1697 MPFR_ASSERTD (_prec >= MPFR_PREC_MIN); \
1698 if (MPFR_UNLIKELY (_prec > MPFR_PREC_MAX)) \
1699 mpfr_abort_prec_max (); \
1700 _size = MPFR_PREC2LIMBS (_prec); \
1701 if (MPFR_UNLIKELY (_size * (num) > MPFR_GROUP_STATIC_SIZE)) \
1703 (g).alloc = (num) * _size * sizeof (mp_limb_t); \
1704 (g).mant = (mp_limb_t *) (*__gmp_allocate_func) ((g).alloc); \
1709 (g).mant = (g).tab; \
1711 MPFR_LOG_MSG (("GROUP_INIT: ptr = 0x%lX, size = %lu\n", \
1712 (unsigned long) (g).mant, (unsigned long) (g).alloc)); \
1715 #define MPFR_GROUP_TINIT(g, n, x) \
1716 MPFR_TMP_INIT1 ((g).mant + _size * (n), x, _prec)
1718 #define MPFR_GROUP_INIT_1(g, prec, x) \
1719 MPFR_GROUP_INIT_TEMPLATE(g, prec, 1, MPFR_GROUP_TINIT(g, 0, x))
1720 #define MPFR_GROUP_INIT_2(g, prec, x, y) \
1721 MPFR_GROUP_INIT_TEMPLATE(g, prec, 2, \
1722 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y))
1723 #define MPFR_GROUP_INIT_3(g, prec, x, y, z) \
1724 MPFR_GROUP_INIT_TEMPLATE(g, prec, 3, \
1725 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1726 MPFR_GROUP_TINIT(g, 2, z))
1727 #define MPFR_GROUP_INIT_4(g, prec, x, y, z, t) \
1728 MPFR_GROUP_INIT_TEMPLATE(g, prec, 4, \
1729 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1730 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t))
1731 #define MPFR_GROUP_INIT_5(g, prec, x, y, z, t, a) \
1732 MPFR_GROUP_INIT_TEMPLATE(g, prec, 5, \
1733 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1734 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \
1735 MPFR_GROUP_TINIT(g, 4, a))
1736 #define MPFR_GROUP_INIT_6(g, prec, x, y, z, t, a, b) \
1737 MPFR_GROUP_INIT_TEMPLATE(g, prec, 6, \
1738 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1739 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \
1740 MPFR_GROUP_TINIT(g, 4, a);MPFR_GROUP_TINIT(g, 5, b))
1742 #define MPFR_GROUP_REPREC_TEMPLATE(g, prec, num, handler) do { \
1743 mpfr_prec_t _prec = (prec); \
1744 size_t _oalloc = (g).alloc; \
1746 MPFR_LOG_MSG (("GROUP_REPREC: oldptr = 0x%lX, oldsize = %lu\n", \
1747 (unsigned long) (g).mant, (unsigned long) _oalloc)); \
1748 MPFR_ASSERTD (_prec >= MPFR_PREC_MIN); \
1749 if (MPFR_UNLIKELY (_prec > MPFR_PREC_MAX)) \
1750 mpfr_abort_prec_max (); \
1751 _size = MPFR_PREC2LIMBS (_prec); \
1752 (g).alloc = (num) * _size * sizeof (mp_limb_t); \
1753 if (MPFR_LIKELY (_oalloc == 0)) \
1754 (g).mant = (mp_limb_t *) (*__gmp_allocate_func) ((g).alloc); \
1756 (g).mant = (mp_limb_t *) \
1757 (*__gmp_reallocate_func) ((g).mant, _oalloc, (g).alloc); \
1758 MPFR_LOG_MSG (("GROUP_REPREC: newptr = 0x%lX, newsize = %lu\n", \
1759 (unsigned long) (g).mant, (unsigned long) (g).alloc)); \
1763 #define MPFR_GROUP_REPREC_1(g, prec, x) \
1764 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 1, MPFR_GROUP_TINIT(g, 0, x))
1765 #define MPFR_GROUP_REPREC_2(g, prec, x, y) \
1766 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 2, \
1767 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y))
1768 #define MPFR_GROUP_REPREC_3(g, prec, x, y, z) \
1769 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 3, \
1770 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1771 MPFR_GROUP_TINIT(g, 2, z))
1772 #define MPFR_GROUP_REPREC_4(g, prec, x, y, z, t) \
1773 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 4, \
1774 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1775 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t))
1776 #define MPFR_GROUP_REPREC_5(g, prec, x, y, z, t, a) \
1777 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 5, \
1778 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1779 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \
1780 MPFR_GROUP_TINIT(g, 4, a))
1781 #define MPFR_GROUP_REPREC_6(g, prec, x, y, z, t, a, b) \
1782 MPFR_GROUP_REPREC_TEMPLATE(g, prec, 6, \
1783 MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \
1784 MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \
1785 MPFR_GROUP_TINIT(g, 4, a);MPFR_GROUP_TINIT(g, 5, b))
1788 /******************************************************
1789 *************** Internal Functions *****************
1790 ******************************************************/
1792 #if defined (__cplusplus)
1796 __MPFR_DECLSPEC int mpfr_underflow _MPFR_PROTO ((mpfr_ptr, mpfr_rnd_t, int));
1797 __MPFR_DECLSPEC int mpfr_overflow _MPFR_PROTO ((mpfr_ptr, mpfr_rnd_t, int));
1799 __MPFR_DECLSPEC int mpfr_add1 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1800 mpfr_srcptr, mpfr_rnd_t));
1801 __MPFR_DECLSPEC int mpfr_sub1 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1802 mpfr_srcptr, mpfr_rnd_t));
1803 __MPFR_DECLSPEC int mpfr_add1sp _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1804 mpfr_srcptr, mpfr_rnd_t));
1805 __MPFR_DECLSPEC int mpfr_sub1sp _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1806 mpfr_srcptr, mpfr_rnd_t));
1807 __MPFR_DECLSPEC int mpfr_can_round_raw _MPFR_PROTO ((const mp_limb_t *,
1808 mp_size_t, int, mpfr_exp_t, mpfr_rnd_t, mpfr_rnd_t, mpfr_prec_t));
1810 __MPFR_DECLSPEC int mpfr_cmp2 _MPFR_PROTO ((mpfr_srcptr, mpfr_srcptr,
1813 __MPFR_DECLSPEC long __gmpfr_ceil_log2 _MPFR_PROTO ((double));
1814 __MPFR_DECLSPEC long __gmpfr_floor_log2 _MPFR_PROTO ((double));
1815 __MPFR_DECLSPEC double __gmpfr_ceil_exp2 _MPFR_PROTO ((double));
1816 __MPFR_DECLSPEC unsigned long __gmpfr_isqrt _MPFR_PROTO ((unsigned long));
1817 __MPFR_DECLSPEC unsigned long __gmpfr_cuberoot _MPFR_PROTO ((unsigned long));
1818 __MPFR_DECLSPEC int __gmpfr_int_ceil_log2 _MPFR_PROTO ((unsigned long));
1820 __MPFR_DECLSPEC mpfr_exp_t mpfr_ceil_mul _MPFR_PROTO ((mpfr_exp_t, int, int));
1822 __MPFR_DECLSPEC int mpfr_exp_2 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,mpfr_rnd_t));
1823 __MPFR_DECLSPEC int mpfr_exp_3 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,mpfr_rnd_t));
1824 __MPFR_DECLSPEC int mpfr_powerof2_raw _MPFR_PROTO ((mpfr_srcptr));
1826 __MPFR_DECLSPEC int mpfr_pow_general _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1827 mpfr_srcptr, mpfr_rnd_t, int, mpfr_save_expo_t *));
1829 __MPFR_DECLSPEC void mpfr_setmax _MPFR_PROTO ((mpfr_ptr, mpfr_exp_t));
1830 __MPFR_DECLSPEC void mpfr_setmin _MPFR_PROTO ((mpfr_ptr, mpfr_exp_t));
1832 __MPFR_DECLSPEC long mpfr_mpn_exp _MPFR_PROTO ((mp_limb_t *, mpfr_exp_t *, int,
1833 mpfr_exp_t, size_t));
1835 #ifdef _MPFR_H_HAVE_FILE
1836 __MPFR_DECLSPEC void mpfr_fprint_binary _MPFR_PROTO ((FILE *, mpfr_srcptr));
1838 __MPFR_DECLSPEC void mpfr_print_binary _MPFR_PROTO ((mpfr_srcptr));
1839 __MPFR_DECLSPEC void mpfr_print_mant_binary _MPFR_PROTO ((const char*,
1840 const mp_limb_t*, mpfr_prec_t));
1841 __MPFR_DECLSPEC void mpfr_set_str_binary _MPFR_PROTO((mpfr_ptr, const char*));
1843 __MPFR_DECLSPEC int mpfr_round_raw _MPFR_PROTO ((mp_limb_t *,
1844 const mp_limb_t *, mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t, int *));
1845 __MPFR_DECLSPEC int mpfr_round_raw_2 _MPFR_PROTO ((const mp_limb_t *,
1846 mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t));
1847 /* No longer defined (see round_prec.c).
1848 Uncomment if it needs to be defined again.
1849 __MPFR_DECLSPEC int mpfr_round_raw_3 _MPFR_PROTO ((const mp_limb_t *,
1850 mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t, int *));
1852 __MPFR_DECLSPEC int mpfr_round_raw_4 _MPFR_PROTO ((mp_limb_t *,
1853 const mp_limb_t *, mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t));
1855 #define mpfr_round_raw2(xp, xn, neg, r, prec) \
1856 mpfr_round_raw_2((xp),(xn)*GMP_NUMB_BITS,(neg),(prec),(r))
1858 __MPFR_DECLSPEC int mpfr_check _MPFR_PROTO ((mpfr_srcptr));
1860 __MPFR_DECLSPEC int mpfr_sum_sort _MPFR_PROTO ((mpfr_srcptr *const,
1861 unsigned long, mpfr_srcptr *));
1863 __MPFR_DECLSPEC int mpfr_get_cputime _MPFR_PROTO ((void));
1865 __MPFR_DECLSPEC void mpfr_nexttozero _MPFR_PROTO ((mpfr_ptr));
1866 __MPFR_DECLSPEC void mpfr_nexttoinf _MPFR_PROTO ((mpfr_ptr));
1868 __MPFR_DECLSPEC int mpfr_const_pi_internal _MPFR_PROTO ((mpfr_ptr,mpfr_rnd_t));
1869 __MPFR_DECLSPEC int mpfr_const_log2_internal _MPFR_PROTO((mpfr_ptr,mpfr_rnd_t));
1870 __MPFR_DECLSPEC int mpfr_const_euler_internal _MPFR_PROTO((mpfr_ptr, mpfr_rnd_t));
1871 __MPFR_DECLSPEC int mpfr_const_catalan_internal _MPFR_PROTO((mpfr_ptr, mpfr_rnd_t));
1874 __MPFR_DECLSPEC void mpfr_init_cache _MPFR_PROTO ((mpfr_cache_t,
1875 int(*)(mpfr_ptr,mpfr_rnd_t)));
1877 __MPFR_DECLSPEC void mpfr_clear_cache _MPFR_PROTO ((mpfr_cache_t));
1878 __MPFR_DECLSPEC int mpfr_cache _MPFR_PROTO ((mpfr_ptr, mpfr_cache_t,
1881 __MPFR_DECLSPEC void mpfr_mulhigh_n _MPFR_PROTO ((mpfr_limb_ptr,
1882 mpfr_limb_srcptr, mpfr_limb_srcptr, mp_size_t));
1883 __MPFR_DECLSPEC void mpfr_mullow_n _MPFR_PROTO ((mpfr_limb_ptr,
1884 mpfr_limb_srcptr, mpfr_limb_srcptr, mp_size_t));
1885 __MPFR_DECLSPEC void mpfr_sqrhigh_n _MPFR_PROTO ((mpfr_limb_ptr,
1886 mpfr_limb_srcptr, mp_size_t));
1887 __MPFR_DECLSPEC mp_limb_t mpfr_divhigh_n _MPFR_PROTO ((mpfr_limb_ptr,
1888 mpfr_limb_ptr, mpfr_limb_ptr, mp_size_t));
1890 __MPFR_DECLSPEC int mpfr_round_p _MPFR_PROTO ((mp_limb_t *, mp_size_t,
1891 mpfr_exp_t, mpfr_prec_t));
1893 __MPFR_DECLSPEC void mpfr_dump_mant _MPFR_PROTO ((const mp_limb_t *,
1894 mpfr_prec_t, mpfr_prec_t,
1897 __MPFR_DECLSPEC int mpfr_round_near_x _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,
1900 __MPFR_DECLSPEC void mpfr_abort_prec_max _MPFR_PROTO ((void))
1903 __MPFR_DECLSPEC void mpfr_rand_raw _MPFR_PROTO((mpfr_limb_ptr, gmp_randstate_t,
1906 __MPFR_DECLSPEC mpz_t* mpfr_bernoulli_internal _MPFR_PROTO((mpz_t*,
1909 __MPFR_DECLSPEC int mpfr_sincos_fast _MPFR_PROTO((mpfr_t, mpfr_t,
1910 mpfr_srcptr, mpfr_rnd_t));
1912 __MPFR_DECLSPEC double mpfr_scale2 _MPFR_PROTO((double, int));
1914 __MPFR_DECLSPEC void mpfr_div_ui2 _MPFR_PROTO((mpfr_ptr, mpfr_srcptr,
1915 unsigned long int, unsigned long int,
1918 __MPFR_DECLSPEC void mpfr_gamma_one_and_two_third _MPFR_PROTO((mpfr_ptr, mpfr_ptr, mpfr_prec_t));
1920 #if defined (__cplusplus)