1Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. 2Contributed by the AriC and Caramel projects, INRIA. 3 4This file is part of the GNU MPFR Library. 5 6The GNU MPFR Library is free software; you can redistribute it and/or modify 7it under the terms of the GNU Lesser General Public License as published by 8the Free Software Foundation; either version 3 of the License, or (at your 9option) any later version. 10 11The GNU MPFR Library is distributed in the hope that it will be useful, but 12WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 14License for more details. 15 16You should have received a copy of the GNU Lesser General Public License 17along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 18http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 1951 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. 20 21############################################################################## 22 23Changes from version 3.1.0 to version 3.1.1: 24- Improved MPFR manual. 25- Test coverage: 96.5% lines of code. 26- Bug fixes (see <http://www.mpfr.org/mpfr-3.1.0/#fixed> or ChangeLog file). 27 28Changes from versions 3.0.* to version 3.1.0: 29- The "canard à l'orange" release. 30- The MPFR source has been reorganized. 31- Dropped ansi2knr support. 32- TLS support is now detected automatically. If TLS is supported, MPFR is 33 built as thread safe by default. To disable TLS explicitly, configure 34 MPFR with --disable-thread-safe. 35- New --enable-gmp-internals configure option to use GMP's undocumented 36 functions (not from the public API). Note that library versioning is 37 not guaranteed to work if this option is used. 38- The mpfr_urandom and mpfr_urandomb functions now return identical values 39 on processors with different word size (assuming the same random seed, and 40 since the GMP random generator does not depend itself on the word size, 41 cf http://gmplib.org/list-archives/gmp-devel/2010-September/001642.html). 42- The mpfr_add_one_ulp and mpfr_sub_one_ulp macros (which are obsolete and 43 no more documented) will be removed in a future release. 44- Speed improvement for the mpfr_sqr and mpfr_div functions using Mulders' 45 algorithm. As a consequence, other functions using those routines are 46 also faster. 47- Much faster formatted output (mpfr_printf, etc.) with %Rg and similar. 48- The --with-gmp-build configure option can now be used when the GMP 49 source directory and the GMP build directory are different (without 50 having to copy header files manually as before). 51- New functions mpfr_buildopt_gmpinternals_p, mpfr_buildopt_tune_case, 52 mpfr_frexp, mpfr_grandom and mpfr_z_sub. 53- New divide-by-zero exception (flag) and associated functions. 54- The mpfr.h header can be included several times, while still supporting 55 optional functions (see Section "Headers and Libraries" in the manual). 56- Updated tuning parameters. 57- Improved MPFR manual. 58- MPFR tests: libtool no longer generates wrapper scripts with "make check" 59 (so that running the tests under valgrind or gdb is easier). 60- Internal change: the logging mechanism has been improved. 61- Test coverage: 95.2% lines of code. 62- Bug fixes, in particular a huge inefficiency in mpfr_exp (when the 63 target precision is less than MPFR_EXP_THRESHOLD) on hard-to-round 64 cases, which can take several minutes. 65 Note: The mpfr_subnormalize implementation up to MPFR 3.0.0 did not change 66 the flags. In particular, it did not follow the generic rule concerning 67 the inexact flag (and no special behavior was specified). The case of the 68 underflow flag was more a lack of specification. 69 70Changes from versions 2.4.* to version 3.0.0: 71- The "boudin aux pommes" release. 72- MPFR 3.0.0 is binary incompatible with previous versions but (almost) 73 API compatible. More precisely the obsolete functions mpfr_random 74 and mpfr_random2 have been removed, the meaning of the return type 75 of the function mpfr_get_f has changed, and the return type of the 76 function mpfr_get_z is now int instead of void. In practice, this 77 should not break any existing code. 78- MPFR is now distributed under the GNU Lesser General Public License 79 version 3 or later (LGPL v3+). 80- Rounding modes GMP_RNDx are now MPFR_RNDx (GMP_RNDx kept for 81 compatibility). 82- A new rounding mode (MPFR_RNDA) is available to round away from zero. 83- The rounding mode type is now mpfr_rnd_t (as in previous versions, 84 both mpfr_rnd_t and mp_rnd_t are accepted, but mp_rnd_t may be 85 removed in the future). 86- The precision type is now mpfr_prec_t (as in previous versions, both 87 mpfr_prec_t and mp_prec_t are accepted, but mp_prec_t may be removed 88 in the future) and it is now signed (it was unsigned in MPFR 2.*, but 89 this was not documented). In practice, this change should not affect 90 existing code that assumed nothing on the precision type. 91- MPFR now has its own exponent type mpfr_exp_t, which is currently 92 the same as GMP's mp_exp_t. 93- Functions mpfr_random and mpfr_random2 have been removed. 94- mpfr_get_f and mpfr_get_z now return a ternary value. 95- mpfr_strtofr now accepts bases from 37 to 62. 96- mpfr_custom_get_mantissa was renamed to mpfr_custom_get_significand 97 (mpfr_custom_get_mantissa is still available via a #define). 98- Functions mpfr_get_si, mpfr_get_ui, mpfr_get_sj, mpfr_get_uj, 99 mpfr_get_z and mpfr_get_z_2exp no longer have cases with undefined 100 behavior; in these cases, the behavior is now specified, and in 101 particular, the erange flag is set. 102- New functions mpfr_buildopt_tls_p and mpfr_buildopt_decimal_p giving 103 information about options used at MPFR build time. 104- New function mpfr_regular_p. 105- New function mpfr_set_zero. 106- New function mpfr_digamma. 107- New function mpfr_ai (incomplete, experimental). 108- New functions mpfr_set_flt and mpfr_get_flt to convert from/to the 109 float type. 110- New function mpfr_urandom. 111- New function mpfr_set_z_2exp (companion to mpfr_get_z_2exp, which 112 was renamed from mpfr_get_z_exp in previous versions). 113- New function mpfr_min_prec. 114- Speed improvement for large precisions in the trigonometric functions 115 (mpfr_sin, mpfr_cos, mpfr_tan, mpfr_sin_cos): speedup of about 2.5 116 for 10^5 digits, of about 5 for 10^6 digits. 117- Speed improvement for large precisions of the inverse trigonometric 118 functions (arcsin, arccos, arctan): about 2 for 10^3 digits, up to 119 2.7 for 10^6 digits. 120- Some documentation files are installed in $docdir. 121- The detection of a GMP build directory (more precisely, the internal 122 header files of GMP) was previously done separately from the use of 123 the --with-gmp-build configure option. This was not consistent with 124 the documentation and with other parts of the configure script. So, 125 as of MPFR 3.0.0, the internal header files of GMP are now used if 126 and only if the --with-gmp-build configure option is given. 127- The configure script recognizes some extra "long double" formats 128 (double big endian, double little endian, double-double big endian). 129- MPFR manual: added "API Compatibility" section. 130- Test coverage: 97.1% lines of code. 131- Bug fixes. 132 133Changes from versions 2.3.* to version 2.4.0: 134- The "andouillette sauce moutarde" release. 135- MPFR is now a GNU package. 136- Changes in the behavior of mpfr_strtofr and in its documentation 137 concerning particular cases where the code and the documentation 138 did not match; this change is also present in MPFR 2.3.1. 139- Behavior of mpfr_check_range changed: if the value is an inexact 140 infinity, the overflow flag is set (in case it was lost); this 141 change is also present in MPFR 2.3.2. 142- Function mpfr_init_gmp_rand (only defined when building MPFR without 143 the --with-gmp-build configure option) is no longer defined at all. 144 This function was private and not documented, and was used only in 145 the MPFR test suite. User code that calls it is regarded as broken 146 and may fail as a consequence. Running the old test suite against 147 MPFR 2.4.0 may also fail. 148- New functions: 149 * between a MPFR number and a double: mpfr_add_d, mpfr_sub_d, 150 mpfr_d_sub, mpfr_mul_d, mpfr_div_d, mpfr_d_div, 151 * formatted input/output: 152 mpfr_printf, mpfr_fprintf, mpfr_vprintf, mpfr_vfprintf, 153 mpfr_sprintf, mpfr_snprintf, mpfr_vsprintf, mpfr_vsnprintf, 154 mpfr_asprintf, mpfr_vasprintf. 155 * mpfr_sinh_cosh, mpfr_li2, mpfr_modf, mpfr_fmod, mpfr_rec_sqrt. 156- Configure test for TLS support. 157- Get default $CC and $CFLAGS from gmp.h (__GMP_CC / __GMP_CFLAGS, 158 which are available as of GMP 4.2.3). 159- Documented the fact that mpfr_random and mpfr_random2 will be 160 suppressed in the next release, and that the specification of 161 mpfr_eq may change in the next release (for compatibility with 162 the mpf layer of GMP). 163- Test coverage: 96.7% lines of code. 164- Bug fixes. 165 166Changes from versions 2.2.* to version 2.3.0: 167- The mpfr.info file is now installed in the share subdirectory 168 (as required by the Filesystem Hierarchy Standard); see output 169 of "./configure --help". 170- The shared library is now enabled by default. If the MPFR build 171 fails on your platform, try the --disable-shared configure option 172 to disable the shared library. 173- Thread-safe support with Microsoft Visual compiler. 174- New functions mpfr_j0, mpfr_j1, mpfr_jn, mpfr_y0, mpfr_y1, mpfr_yn, 175 mpfr_lgamma, mpfr_remainder, mpfr_remquo, mpfr_fms, mpfr_signbit, 176 mpfr_setsign, mpfr_copysign, mpfr_get_patches. 177- Functions mpfr_sin, mpfr_cos and mpfr_sin_cos improved (argument 178 reduction). 179- More detailed MPFR manual. 180- Improved tests (make check). 181- Bug fixes. 182 183Changes from versions 2.1.* to version 2.2.0: 184- Bug fixes. 185- new functions mpfr_set_overflow, mpfr_set_underflow, mpfr_set_inexflag, 186 mpfr_set_erangeflag, mpfr_set_nanflag, mpfr_erfc, mpfr_atan2, mpfr_pow_z, 187 mpfr_subnormalize, mpfr_const_catalan, mpfr_sec, mpfr_csc, mpfr_cot, 188 mpfr_root, mpfr_eint, mpfr_get_f, mpfr_sech, mpfr_csch, mpfr_coth, 189 mpfr_lngamma. 190- new macro: MPFR_VERSION_STRING 191- Remove the exported MPFR variables from mpfr.h to mpfr-impl.h. 192 (They were undocumented, so programs which respect the API still work). 193- Grep CC and CFLAGS from GMP Makefile if possible. 194- Math functions are faster (both average and worst cases). 195- Better support for long double. 196- Shared library of MPFR. 197- Binary compatible with previous versions if you do not use undocumented 198 features. 199- Thread safe (if built with --enable-thread-safe). 200- Logging facility. 201- Change in the semantics of mpfr_out_str/mpfr_get_str when n_digits=0. 202- Better locale support. 203 204Changes from version 2.1.0 to version 2.1.1: 205- Better way to detect the GMP library. 206- Bug fixes. 207 208Changes from version 2.0.3 to version 2.1.0: 209- Bug fixes. 210- new functions mpfr_strtofr, mpfr_set_uj, mpfr_set_sj, mpfr_set_ui_2exp, 211 mpfr_set_si_2exp, mpfr_set_sj_2exp, mpfr_set_uj_2exp, mpfr_get_uj, 212 mpfr_get_sj, mpfr_get_z, mpfr_free_str, mpfr_si_sub, mpfr_sub_si, 213 mpfr_mul_si, mpfr_si_div, mpfr_div_si, mpfr_sqr, mpfr_cmp_z, mpfr_cmp_q, 214 mpfr_zero_p, mpfr_free_cache, mpfr_sum, mpfr_get_version, 215 mpfr_get_default_rounding_mode, mpfr_get_emin_min, mpfr_get_emin_max, 216 mpfr_get_emax_min, mpfr_get_emax_max, mpfr_inits, mpfr_inits2, mpfr_clears, 217 mpfr_fits_intmax_p, mpfr_fits_uintmax_p, mpfr_clear_erangeflag, 218 mpfr_erangeflag_p, mpfr_rint_round, mpfr_rint_trunc, mpfr_rint_ceil, 219 mpfr_rint_floor. 220- new macros MPFR_DECL_INIT, MPFR_VERSION, MPFR_VERSION_NUM, 221 MPFR_VERSION_MAJOR, MPFR_VERSION_MINOR, MPFR_VERSION_PATCHLEVEL. 222- improved documentation. 223- improved configure. 224- improved portability (library and test suite). 225- It handles correctly non IEEE-754 double. 226- GMP internal files are not needed to install MPFR. 227- It is faster with low-precision floating point. 228- New global flag: ERANGE_FLAG. 229- Binary incompatible with previous versions, but API compatible. 230- mpfr_set_str doesn't allow anymore "@NAN@garbagechar" and "@INF@garbagechar", 231 allows base 0 (detection of the base), prefix (0x, 0b), leading whitespace. 232 233Changes from version 2.0.2 to version 2.0.3: 234- Bug fixes. 235- Support GMP as a shared library (not fully tested). 236 237Changes from version 2.0.1 to version 2.0.2: 238- many bug fixes and other improvements. 239- new functions mpfr_prec_round (replaces mpfr_round_prec), mpfr_get_exp, 240 mpfr_set_exp, mpfr_get_ld, mpfr_set_ld, mpfr_get_d_2exp, mpfr_get_si, 241 mpfr_get_ui, mpfr_nextabove, mpfr_nextbelow, mpfr_nexttoward, mpfr_frac, 242 mpfr_fits_*, mpfr_cmp_d, mpfr_cmpabs, mpfr_erf, mpfr_gamma, mpfr_zeta, 243 mpfr_greater_p, mpfr_greaterequal_p, mpfr_less_p, mpfr_lessequal_p, 244 mpfr_lessgreater_p, mpfr_equal_p, mpfr_unordered_p. 245- removed functions: mpfr_print_binary, mpfr_round_prec (replaced by 246 mpfr_prec_round), mpfr_set_str_raw, mpfr_set_machine_rnd_mode. 247- function mpfr_isinteger renamed mpfr_integer_p. 248- return type of some functions changed from void to int, for consistency. 249- return type of mpfr_set_prec changed from int to void. 250- new values for exponent range. 251- rename internal variables. 252 253Changes from version 2001 to version 2.0.1: 254- new mathematical functions: acos, acosh, asin, asinh, atan, atanh, cosh, 255 base-2 exponential and logarithm, base-10 logarithm, expm1, factorial, 256 pow, pow_si, pow_ui, sinh, tan, tanh, ui_pow, ui_pow_ui 257- other new functions: mpfr_const_euler, mpfr_dim, mpfr_fma, mpfr_hypot, 258 mpfr_min, mpfr_max, mpfr_rint, mpfr_set_inf, mpfr_set_nan 259- new operations with MPZ or MPQ: mpfr_{add,sub,mul,div}_[zq] 260- new predicates: mpfr_inf_p, mpfr_nan_p, mpfr_number_p, mpfr_isinteger, 261- add mechanism to set/check exponent range (overflow, underflow), partially 262 implemented in the mpfr functions. 263- efficiency: mpfr_div is now faster when the divisor has a few limbs 264- rounding: now mpfr_pow implements exact rounding, and most functions return a 265 ternary value indicating the position of the returned value wrt the exact one 266 (thus the return value is now 'int' instead of 'void') 267- complete rewrite of the configuration files 268- mpfr_get_d, mpfr_{add,sub}_one_ulp now get a rounding mode as 2nd argument 269- some function names did change: mpz_set_fr is now mpfr_get_z_exp, 270 mpfr_print_raw is now mpfr_print_binary. 271 272Changes from version 1.0 to version 2001: 273- the default installation does not provide any more access to machine 274 rounding mode, and as a consequence does not compare MPFR results with 275 precision=53 to machine results. Add option -DTEST if you want to have 276 access to machine rounding mode, and to check MPFR results against. 277- the MPFR files do not need <math.h> any more 278- the header file <mpfr.h> was split into <mpfr.h> for exported functions 279 and <mpfr-impl.h> for internal functions. The user should not use functions 280 or macros from <mpfr-impl.h>, since those may change in further releases. 281- <mpfr.h> was modified in order to make easy a C++ interface 282- MPFR now deals with infinities (+infinity and -infinity) and NaN 283- the missing function mpfr_swap is now available 284- mpfr_zeta was removed (was incomplete) 285- mpfr_init and mpfr_init2 now initialize the corresponding variable to 0 286 (like in other initialization functions from GNU MP) 287- in case memory allocation fails, an error message is output 288- several bugs of version 1.0 were fixed 289 290Changes from version 0.4 to version 1.0: 291 292- Version 1.0 now uses a standard configure/make installation. 293- Version 1.0 implements all functions that are available in the MPF class 294 from GMP 3.1 (except mpf_swap) and a header file mpf2mpfr.h is included in 295 the distribution for easy change from MPF to MPFR. 296- Version 1.0 implements new elementary functions: mpfr_sincos 297- Some functions and macros have been renamed: mpfr_log2 is now 298 mpfr_const_log2, mpfr_pi is now mpfr_const_pi, SIGN is now MPFR_SIGN. 299- Version 1.0 uses faster algorithms for mpfr_exp, mpfr_const_pi, 300 mpfr_const_log2. Compare the timings from version 1.0 and version 0.4. 301- Version 1.0 corrects some bugs of version 0.4. 302- The precision of MPFR variables is now named mpfr_prec, which makes it 303 easier to change it, to say unsigned long long. Same for the rounding mode 304 which is called mp_rnd_t. 305 306You'll find other news concerning the GNU MPFR library on the web 307page <http://www.mpfr.org/>. 308