1Copyright 1996, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 22009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. 3 4Verbatim copying and distribution of this entire article is permitted in any 5medium, provided this notice is preserved. 6 7 8Changes between GMP version 5.1.2 and 5.1.3 9 10 BUGS FIXED 11 * The internal functions mpn_sbpi1_div_qr_sec mpn_sbpi1_div_r_sec could 12 compute garbage with a low probability. They are now rewritten, and the 13 test code has been improved. 14 15 * A bug in the ia64 implementation of mpn_divrem_2, clobbering some 16 callee-save registers, has been fixed. This is an internal 17 function, with the bug manifesting itself as miscomputation in, 18 e.g., mpn_sqrtrem. 19 20 * The documentation now correctly says 'const' for input arguments. 21 22 SPEEDUPS 23 * None. 24 25 FEATURES 26 * None. 27 28 MISC 29 * None. 30 31Changes between GMP version 5.1.1 and 5.1.2 32 33 BUGS FIXED 34 * A bug in mpz_powm_ui triggered by base arguments of at least 15000 decimal 35 digits or mod arguments of at least 7500 decimal digits has been fixed. 36 37 * A AMD Bulldozer specific bug affecting the 64-bit Windows ABI has been 38 fixed. This bug was in a key function (mpn_mul_1) and made both Bulldozer 39 specific builds and fat builds run on Bulldozer completely non-functional. 40 41 SPEEDUPS 42 * None. 43 44 FEATURES 45 * None. 46 47 MISC 48 * Fixes and generalisations to the test suite. 49 50 * Minor portability enhancements. 51 52 53Changes between GMP version 5.1.0 and 5.1.1 54 55 BUGS FIXED 56 * On Windows 64-bit, an error causing link errors about 57 __gmp_binvert_limb_table has been fixed. 58 59 * Aarch64 alias ARM64 support now works. 60 61 * A possible buffer overrun in mpz_ior has been fixed. 62 63 * A rare sign flip in mpz_remove has been fixed. 64 65 * A bug causing problems with mpf numbers with absolute value >= 2^31 has 66 been fixed. 67 68 * Several bugs in mini-gmp have been fixed. 69 70 * A bug caused by automake, related to the 'distcheck' target, has been fixed 71 by upgrading the automake used for GMP release engineering. 72 73 SPEEDUPS 74 * None. 75 76 FEATURES 77 * Preliminary support for the x32 ABI under x86-64. 78 79 MISC 80 * The mini-gmp testsuite now tests the entire set of functions. 81 82 * Various improvements of the GMP testsuite. 83 84 85Changes between GMP version 5.0.* and 5.1.0 86 87 BUGS FIXED 88 * When reading a C++ number (like mpz_class) in an istream reaches the end 89 of the stream, the eofbit is now set. 90 91 * The result sign of mpz_rootrem's remainder is now always correct. 92 93 * The mpz_remove function now handles negative divisors. 94 95 * Contains all fixes from release 5.0.5. 96 97 SPEEDUPS 98 * The n-factorial and n-over-k functions have been reimplemented for great 99 speedups for small and large operands. 100 101 * New subquadratic algorithm for the Kronecker/Jacobi/Legendre symbol. 102 103 * Major speedup for ARM, in particular ARM Cortex-A9 and A15, thanks to broad 104 assembly support. 105 106 * Significant speedup for POWER6 and POWER7 thanks to improved assembly. 107 108 * The performance under M$ Windows' 64-bit ABI has been greatly improved 109 thanks to complete assembly support. 110 111 * Minor speed improvements of many functions and for many platforms. 112 113 FEATURES 114 * Many new CPUs recognised. 115 116 * New functions for multi-factorials, and primorial: mpz_2fac_ui, 117 mpz_mfac_uiui and mpz_primorial_ui. 118 119 * The mpz_powm_sec function now uses side-channel silent division for 120 converting into Montgomery residues. 121 122 * The fat binary mechanism is now more robust in its CPU recognition. 123 124 MISC 125 * Inclusion of assembly code is now controlled by the configure options 126 --enable-assembly and --disable-assembly. The "none" CPU target is gone. 127 128 * In C++, the conversions mpq_class->mpz_class, mpf_class->mpz_class and 129 mpf_class->mpq_class are now explicit. 130 131 * Includes "mini-gmp", a small, portable, but less efficient, implementation 132 of a subset of GMP's mpn and mpz interfaces. Used in GMP bootstrap, but it 133 can also be bundled with applications as a fallback when the real GMP 134 library is unavailable. 135 136 * The ABIs under AIX are no longer called aix32 and aix64, but mode64 and 32. 137 This is more consistent with other powerpc systems. 138 139 * The coverage of the testsuite has been improved, using the lcov tool. See 140 also http://gmplib.org/devel/lcov/. 141 142 * It is now possible to compile GMP using a C++ compiler. 143 144 * K&R C compilers are no longer supported. 145 146 * The BSD MP compatibility functions have been removed. 147 148 149Changes between GMP version 5.0.4 and 5.0.5 150 151 BUGS FIXED 152 * A bug causing AMD 11h processors to be treated like AMD 10h has been fixed. 153 The 11h processors do not correctly handle all 10h (aka K10) instructions, 154 and GMP's use of these instructions results in major miscomputations (not 155 as one would have hoped CPU traps of some 'illegal instruction' sort). 156 157 * A bug affecting recent Intel Sandy Bridge CPUs resulting in configuration 158 failures has been fixed. 159 160 SPEEDUPS 161 * None. 162 163 FEATURES 164 * A couple of tests added to the self-check suite. 165 166 MISC 167 * None. 168 169 170Changes between GMP version 5.0.3 and 5.0.4 171 172 BUGS FIXED 173 * Thresholds in mpn_powm_sec for both fat and non-fat builds are now used 174 safely, plugging a one-word buffer overrun introduced in the 5.0.3 release 175 (for non-fat) and a multi-word buffer overrun that existed since 5.0 (for 176 fat). (We have not been able to provoke malign stack smashing in any of 177 the ~100 configurations explored by the GMP nightly builds, but the bug 178 should be assumed to be exploitable.) 179 180 * Two bugs in multiplication code causing incorrect computation with 181 extremely low probability have been fixed. 182 183 * A bug in the test suite causing buffer overruns during "make check", 184 sometimes leading to subsequent malloc crashes, has been fixed. 185 186 * Two bugs in the gcd code have been fixed. They could lead to incorrect 187 results, but for uniformly distributed random operands, the likelihood for 188 that is infinitesimally small. (There was also a third bug, but that was 189 an incorrect ASSERT, which furthermore was not enabled by default.) 190 191 * A bug affecting 32-bit PowerPC division has been fixed. The bug caused 192 miscomputation for certain divisors in the range 2^32 ... 2^64-1 (about 1 193 in 2^30 of these). 194 195 SPEEDUPS 196 * None, except indirectly through recognition of new CPUs, and through better 197 tuning parameters. 198 199 FEATURES 200 * Some more tests added to the self-check suite. 201 202 * The AMD "Bulldozer" CPU is now recognised. 203 204 MISC 205 * None. 206 207 208Changes between GMP version 5.0.2 and 5.0.3 209 210 BUGS FIXED 211 * A few minor bugs related to portability fixed. 212 213 * A slight timing leak of the powm_sec functions have been sealed. (This 214 leak could possibly be used to extract the most significant few bits of the 215 exponent. "Few" here means at most 10.) 216 217 * The mpz_nextprime function now runs a safer number of pseudo-random prime 218 tests. 219 220 * A bug in division code possibly causing incorrect computation was fixed. 221 222 SPEEDUPS 223 * None, except indirectly through recognition of new CPUs, and through better 224 tuning parameters. 225 226 FEATURES 227 * New CPUs recognised. 228 229 * IBM S/390 are now supported in both 31/32-bit and 64-bit mode. (We have 230 not been able to fully test this on any multilib machine, since IBM expired 231 our guest account a few days before our release.) 232 233 MISC 234 * None. 235 236 237Changes between GMP version 5.0.1 and 5.0.2 238 239 BUGS FIXED 240 * Many minor bugs related to portability fixed. 241 242 * The support for HPPA 2.0N now works, after an assembly bug fix. 243 244 * A test case type error has been fixed. The symptom of this bug was 245 spurious 'make check' failures. 246 247 SPEEDUPS 248 * None, except indirectly through recognition of new CPUs. 249 250 FEATURES 251 * Fat builds are now supported for 64-bit x86 processors also under Darwin. 252 253 MISC 254 * None. 255 256 257Changes between GMP version 5.0.0 and 5.0.1 258 259 BUGS FIXED 260 * Fat builds fixed. 261 262 * Fixed crash for huge multiplies when old FFT_TABLE2 type of parameter 263 selection tables' sentinel was smaller than multiplied operands. 264 265 * The solib numbers now reflect the removal of the documented but preliminary 266 mpn_bdivmod function; we correctly flag incompatibility with GMP 4.3. GMP 267 5.0.0 has this wrong, and should perhaps be uninstalled to avoid confusion. 268 269 SPEEDUPS 270 * Multiplication of large numbers has indirectly been sped up through better 271 FFT tuning and processor recognition. Since many operations depend on 272 multiplication, there will be a general speedup. 273 274 FEATURES 275 * More Core i3, i5 an Core i7 processor models are recognised. 276 277 * Fixes and workarounds for Mac OS quirks should make this GMP version build 278 using many of the different versions of "Xcode". 279 280 MISC 281 * The amount of scratch memory needed for multiplication of huge numbers has 282 been reduced substantially (but is still larger than in GMP 4.3.) 283 284 * Likewise, the amount of scratch memory needed for division of large numbers 285 has been reduced substantially. 286 287 * The FFT tuning code of tune/tuneup.c has been completely rewritten, and 288 new, large FFT parameter selection tables are provided for many machines. 289 290 * Upgraded to the latest autoconf, automake, libtool. 291 292 293Changes between GMP version 4.3.X and 5.0.0 294 295 BUGS FIXED 296 * None (contains the same fixes as release 4.3.2). 297 298 SPEEDUPS 299 * Multiplication has been overhauled: 300 (1) Multiplication of larger same size operands has been improved with 301 the addition of two new Toom functions and a new internal function 302 mpn_mulmod_bnm1 (computing U * V mod (B^n-1), B being the word base. 303 This latter function is used for the largest products, waiting for a 304 better Schoenhage-Strassen U * V mod (B^n+1) implementation. 305 (2) Likewise for squaring. 306 (3) Multiplication of different size operands has been improved with the 307 addition of many new Toom function, and by selecting underlying 308 functions better from the main multiply functions. 309 310 * Division and mod have been overhauled: 311 (1) Plain "schoolbook" division is reimplemented using faster quotient 312 approximation. 313 (2) Division Q = N/D, R = N mod D where both the quotient and remainder 314 are needed now runs in time O(M(log(N))). This is an improvement of 315 a factor log(log(N)) 316 (3) Division where just the quotient is needed is now O(M(log(Q))) on 317 average. 318 (4) Modulo operations using Montgomery REDC form now take time O(M(n)). 319 (5) Exact division Q = N/D by means of mpz_divexact has been improved 320 for all sizes, and now runs in time O(M(log(N))). 321 322 * The function mpz_powm is now faster for all sizes. Its complexity has 323 gone from O(M(n)log(n)m) to O(M(n)m) where n is the size of the modulo 324 argument and m is the size of the exponent. It is also radically 325 faster for even modulus, since it now partially factors such modulus 326 and performs two smaller modexp operations, then uses CRT. 327 328 * The internal support for multiplication yielding just the lower n limbs 329 has been improved by using Mulders' algorithm. 330 331 * Computation of inverses, both plain 1/N and 1/N mod B^n have been 332 improved by using well-tuned Newton iterations, and wrap-around 333 multiplication using mpn_mulmod_bnm1. 334 335 * A new algorithm makes mpz_perfect_power_p asymptotically faster. 336 337 * The function mpz_remove uses a much faster algorithm, is better tuned, 338 and also benefits from the division improvements. 339 340 * Intel Atom and VIA Nano specific optimisations. 341 342 * Plus hundreds of smaller improvements and tweaks! 343 344 FEATURES 345 * New mpz function: mpz_powm_sec for side-channel quiet modexp 346 computations. 347 348 * New mpn functions: mpn_sqr, mpn_and_n, mpn_ior_n, mpn_xor_n, mpn_nand_n, 349 mpn_nior_n, mpn_xnor_n, mpn_andn_n, mpn_iorn_n, mpn_com, mpn_neg, 350 mpn_copyi, mpn_copyd, mpn_zero. 351 352 * The function mpn_tdiv_qr now allows certain argument overlap. 353 354 * Support for fat binaries for 64-bit x86 processors has been added. 355 356 * A new type, mp_bitcnt_t for bignum bit counts, has been introduced. 357 358 * Support for Windows64 through mingw64 has been added. 359 360 * The cofactors of mpz_gcdext and mpn_gcdext are now more strictly 361 normalised, returning to how GMP 4.2 worked. (Note that also release 362 4.3.2 has this change.) 363 364 MISC 365 * The mpn_mul function should no longer be used for squaring, 366 instead use the new mpn_sqr. 367 368 * The algorithm selection has been improved, the number of thresholds have 369 more than doubled, and the tuning and use of existing thresholds have 370 been improved. 371 372 * The tune/speed program can measure many of new functions. 373 374 * The mpn_bdivmod function has been removed. We do not consider this an 375 incompatible change, since the function was marked as preliminary. 376 377 * The testsuite has been enhanced in various ways. 378 379 380Changes between GMP version 4.3.1 and 4.3.2 381 382 Bugs: 383 * Fixed bug in mpf_eq. 384 * Fixed overflow issues in mpz_set_str, mpz_inp_str, mpf_set_str, and 385 mpf_get_str. 386 * Avoid unbounded stack allocation for unbalanced multiplication. 387 * Fixed bug in FFT multiplication. 388 389 Speedups: 390 * None, except that proper processor recognition helps affected processors. 391 392 Features: 393 * Recognise more "Core 2" processor variants. 394 * The cofactors of mpz_gcdext and mpn_gcdext are now more strictly 395 normalised, returning to how GMP 4.2 worked. 396 397 398Changes between GMP version 4.3.0 and 4.3.1 399 400 Bugs: 401 * Fixed bug in mpn_gcdext, affecting also mpz_gcdext and mpz_invert. 402 The bug could cause a cofactor to have a leading zero limb, which 403 could lead to crashes or miscomputation later on. 404 * Fixed some minor documentation issues. 405 406 Speedups: 407 * None. 408 409 Features: 410 * Workarounds for various issues with Mac OS X's build tools. 411 * Recognise more IBM "POWER" processor variants. 412 413 414Changes between GMP version 4.2.X and 4.3.0 415 416 Bugs: 417 * Fixed bug in mpz_perfect_power_p with recognition of negative perfect 418 powers that can be written both as an even and odd power. 419 * We might accidentally have added bugs since there is a large amount of 420 new code in this release. 421 422 Speedups: 423 * Vastly improved assembly code for x86-64 processors from AMD and Intel. 424 * Major improvements also for many other processor families, such as 425 Alpha, PowerPC, and Itanium. 426 * New sub-quadratic mpn_gcd and mpn_gcdext, as well as improved basecase 427 gcd code. 428 * The multiply FFT code has been slightly improved. 429 * Balanced multiplication now uses 4-way Toom in addition to schoolbook, 430 Karatsuba, 3-way Toom, and FFT. 431 * Unbalanced multiplication has been vastly improved. 432 * Improved schoolbook division by means of faster quotient approximation. 433 * Several new algorithms for division and mod by single limbs, giving 434 many-fold speedups. 435 * Improved nth root computations. 436 * The mpz_nextprime function uses sieving and is much faster. 437 * Countless minor tweaks. 438 439 Features: 440 * Updated support for fat binaries for x86_32 include current processors 441 * Lots of new mpn internal interfaces. Some of them will become public 442 in a future GMP release. 443 * Support for the 32-bit ABI under x86-apple-darwin. 444 * x86 CPU recognition code should now default better for future 445 processors. 446 * The experimental nails feature does not work in this release, but 447 it might be re-enabled in the future. 448 449 Misc: 450 * The gmp_version variable now always contains three parts. For this 451 release, it is "4.3.0". 452 453 454Changes between GMP version 4.2.3 and 4.2.4 455 456 Bugs: 457 * Fix bug with parsing exponent '+' sign in mpf. 458 * Fix an allocation bug in mpf_set_str, also affecting mpf_init_set_str, and 459 mpf_inp_str. 460 461 Speedups: 462 * None, except that proper processor recognition helps affected processors. 463 464 Features: 465 * Recognize new AMD processors. 466 467 468Changes between GMP version 4.2.2 and 4.2.3 469 470 Bugs: 471 * Fix x86 CPU recognition code to properly identify recent AMD and Intel 472 64-bit processors. 473 * The >> operator of the C++ wrapper gmpxx.h now does floor rounding, not 474 truncation. 475 * Inline semantics now follow the C99 standard, and works with recent GCC 476 releases. 477 * C++ bitwise logical operations work for more types. 478 * For C++, gmp.h now includes cstdio, improving compiler compatibility. 479 * Bases > 36 now work properly in mpf_set_str. 480 481 Speedups: 482 * None, except that proper processor recognition helps affected processors. 483 484 Features: 485 * The allocation functions now detect overflow of the mpz_t type. This means 486 that overflow will now cause an abort, except when the allocation 487 computation itself overflows. (Such overflow can probably only happen in 488 powering functions; we will detect powering overflow in the future.) 489 490 491Changes between GMP version 4.2.1 and 4.2.2 492 493 * License is now LGPL version 3. 494 495 Bugs: 496 * Shared library numbers corrected for libcxx. 497 * Fixed serious bug in gmpxx.h where a=a+b*c would generate garbage. 498 Note that this only affects C++ programs. 499 * Fix crash in mpz_set_d for arguments with large negative exponent. 500 * Fix 32-bit ABI bug with Itanium assembly for popcount and hamdist. 501 * Fix assembly syntax problem for powerpc-ibm-aix with AIX native assembler. 502 * Fix problems with x86 --enable-fat, where the compiler where told to 503 generate code for the build machine, not plain i386 code as it should. 504 * Improved recognition of powerpc systems wrt Altivec/VMX capability. 505 * Misc minor fixes, mainly workarounds for compiler/assembler bugs. 506 507 Speedups: 508 * "Core 2" and Pentium 4 processors, running in 64-bit mode will get a 509 slight boost as they are now specifically recognized. 510 511 Features: 512 * New support for x86_64-solaris 513 * New, rudimentary support for x86-apple-darwin and x86_64-apple-darwin. 514 (Please see http://gmplib.org/macos.html for more information.) 515 516 517Changes between GMP version 4.2 and 4.2.1 518 519 Bugs: 520 * Shared library numbers corrected. 521 * Broken support for 32-bit AIX fixed. 522 * Misc minor fixes. 523 524 Speedups: 525 * Exact division (mpz_divexact) now falls back to plain division for large 526 operands. 527 528 Features: 529 * Support for some new systems. 530 531 532Changes between GMP version 4.1.4 and 4.2 533 534 Bugs: 535 * Minor bug fixes and code generalizations. 536 * Expanded and improved test suite. 537 538 Speedups: 539 * Many minor optimizations, too many to mention here. 540 * Division now always subquadratic. 541 * Computation of n-factorial much faster. 542 * Added basic x86-64 assembly code. 543 * Floating-point output is now subquadratic for all bases. 544 * FFT multiply code now about 25% faster. 545 * Toom3 multiply code faster. 546 547 Features: 548 * Much improved configure. 549 * Workarounds for many more compiler bugs. 550 * Temporary allocations are now made on the stack only if small. 551 * New systems supported: HPPA-2.0 gcc, IA-64 HP-UX, PowerPC-64 Darwin, 552 Sparc64 GNU/Linux. 553 * New i386 fat binaries, selecting optimised code at runtime (--enable-fat). 554 * New build option: --enable-profiling=instrument. 555 * New memory function: mp_get_memory_functions. 556 * New Mersenne Twister random numbers: gmp_randinit_mt, also now used for 557 gmp_randinit_default. 558 * New random functions: gmp_randinit_set, gmp_urandomb_ui, gmp_urandomm_ui. 559 * New integer functions: mpz_combit, mpz_rootrem. 560 * gmp_printf etc new type "M" for mp_limb_t. 561 * gmp_scanf and friends now accept C99 hex floats. 562 * Numeric input and output can now be in bases up to 62. 563 * Comparisons mpz_cmp_d, mpz_cmpabs_d, mpf_cmp_d recognise infinities. 564 * Conversions mpz_get_d, mpq_get_d, mpf_get_d truncate towards zero, 565 previously their behaviour was unspecified. 566 * Fixes for overflow issues with operands >= 2^31 bits. 567 568 Caveats: 569 * mpfr is gone, and will from now on be released only separately. Please see 570 www.mpfr.org. 571 572 573Changes between GMP version 4.1.3 and 4.1.4 574 575* Bug fix to FFT multiplication code (crash for huge operands). 576* Bug fix to mpf_sub (miscomputation). 577* Support for powerpc64-gnu-linux. 578* Better support for AMD64 in 32-bit mode. 579* Upwardly binary compatible with 4.1.3, 4.1.2, 4.1.1, 4.1, 4.0.1, 4.0, 580 and 3.x versions. 581 582 583Changes between GMP version 4.1.2 and 4.1.3 584 585* Bug fix for FFT multiplication code (miscomputation). 586* Bug fix to K6 assembly code for gcd. 587* Bug fix to IA-64 assembly code for population count. 588* Portability improvements, most notably functional AMD64 support. 589* mpz_export allows NULL for countp parameter. 590* Many minor bug fixes. 591* mpz_export allows NULL for countp parameter. 592* Upwardly binary compatible with 4.1.2, 4.1.1, 4.1, 4.0.1, 4.0, and 3.x 593 versions. 594 595 596Changes between GMP version 4.1.1 and 4.1.2 597 598* Bug fixes. 599 600 601Changes between GMP version 4.1 and 4.1.1 602 603* Bug fixes. 604* New systems supported: NetBSD and OpenBSD sparc64. 605 606 607Changes between GMP version 4.0.1 and 4.1 608 609* Bug fixes. 610* Speed improvements. 611* Upwardly binary compatible with 4.0, 4.0.1, and 3.x versions. 612* Asymptotically fast conversion to/from strings (mpz, mpq, mpn levels), but 613 also major speed improvements for tiny operands. 614* mpn_get_str parameter restrictions relaxed. 615* Major speed improvements for HPPA 2.0 systems. 616* Major speed improvements for UltraSPARC systems. 617* Major speed improvements for IA-64 systems (but still sub-optimal code). 618* Extended test suite. 619* mpfr is back, with many bug fixes and portability improvements. 620* New function: mpz_ui_sub. 621* New functions: mpz_export, mpz_import. 622* Optimization for nth root functions (mpz_root, mpz_perfect_power_p). 623* Optimization for extended gcd (mpz_gcdext, mpz_invert, mpn_gcdext). 624* Generalized low-level number format, reserving a `nails' part of each 625 limb. (Please note that this is really experimental; some functions 626 are likely to compute garbage when nails are enabled.) 627* Nails-enabled Alpha 21264 assembly code, allowing up to 75% better 628 performance. (Use --enable-nails=4 to enable it.) 629 630 631Changes between GMP version 4.0 and 4.0.1 632 633* Bug fixes. 634 635 636Changes between GMP version 3.1.1 and 4.0 637 638* Bug fixes. 639* Speed improvements. 640* Upwardly binary compatible with 3.x versions. 641* New CPU support: IA-64, Pentium 4. 642* Improved CPU support: 21264, Cray vector systems. 643* Support for all MIPS ABIs: o32, n32, 64. 644* New systems supported: Darwin, SCO, Windows DLLs. 645* New divide-and-conquer square root algorithm. 646* New algorithms chapter in the manual. 647* New malloc reentrant temporary memory method. 648* New C++ class interface by Gerardo Ballabio (beta). 649* Revamped configure, featuring ABI selection. 650* Speed improvements for mpz_powm and mpz_powm_ui (mainly affecting small 651 operands). 652* mpz_perfect_power_p now properly recognizes 0, 1, and negative perfect 653 powers. 654* mpz_hamdist now supports negative operands. 655* mpz_jacobi now accepts non-positive denominators. 656* mpz_powm now supports negative exponents. 657* mpn_mul_1 operand overlap requirements relaxed. 658* Float input and output uses locale specific decimal point where available. 659* New gmp_printf, gmp_scanf and related functions. 660* New division functions: mpz_cdiv_q_2exp, mpz_cdiv_r_2exp, mpz_divexact_ui. 661* New divisibility tests: mpz_divisible_p, mpz_divisible_ui_p, 662 mpz_divisible_2exp_p, mpz_congruent_p, mpz_congruent_ui_p, 663 mpz_congruent_2exp_p. 664* New Fibonacci function: mpz_fib2_ui. 665* New Lucas number functions: mpz_lucnum_ui, mpz_lucnum2_ui. 666* Other new integer functions: mpz_cmp_d, mpz_cmpabs_d, mpz_get_d_2exp, 667 mpz_init2, mpz_kronecker, mpz_lcm_ui, mpz_realloc2. 668* New rational I/O: mpq_get_str, mpq_inp_str, mpq_out_str, mpq_set_str. 669* Other new rational functions: mpq_abs, mpq_cmp_si, mpq_div_2exp, 670 mpq_mul_2exp, mpq_set_f. 671* New float tests: mpf_integer_p, mpf_fits_sint_p, mpf_fits_slong_p, 672 mpf_fits_sshort_p, mpf_fits_uint_p, mpf_fits_ulong_p, mpf_fits_ushort_p. 673* Other new float functions: mpf_cmp_d, mpf_get_default_prec, mpf_get_si, 674 mpf_get_ui, mpf_get_d_2exp. 675* New random functions: gmp_randinit_default, gmp_randinit_lc_2exp_size. 676* New demo expression string parser (see demos/expr). 677* New preliminary perl interface (see demos/perl). 678* Tuned algorithm thresholds for many more CPUs. 679 680 681Changes between GMP version 3.1 and 3.1.1 682 683* Bug fixes for division (rare), mpf_get_str, FFT, and miscellaneous minor 684 things. 685 686 687Changes between GMP version 3.0 and 3.1 688 689* Bug fixes. 690* Improved `make check' running more tests. 691* Tuned algorithm cutoff points for many machines. This will improve speed for 692 a lot of operations, in some cases by a large amount. 693* Major speed improvements: Alpha 21264. 694* Some speed improvements: Cray vector computers, AMD K6 and Athlon, Intel P5 695 and Pentium Pro/II/III. 696* The mpf_get_prec function now works as it did in GMP 2. 697* New utilities for auto-tuning and speed measuring. 698* Multiplication now optionally uses FFT for very large operands. (To enable 699 it, pass --enable-fft to configure.) 700* Support for new systems: Solaris running on x86, FreeBSD 5, HP-UX 11, Cray 701 vector computers, Rhapsody, Nextstep/Openstep, MacOS. 702* Support for shared libraries on 32-bit HPPA. 703* New integer functions: mpz_mul_si, mpz_odd_p, mpz_even_p. 704* New Kronecker symbol functions: mpz_kronecker_si, mpz_kronecker_ui, 705 mpz_si_kronecker, mpz_ui_kronecker. 706* New rational functions: mpq_out_str, mpq_swap. 707* New float functions: mpf_swap. 708* New mpn functions: mpn_divexact_by3c, mpn_tdiv_qr. 709* New EXPERIMENTAL function layer for accurate floating-point arithmetic, mpfr. 710 To try it, pass --enable-mpfr to configure. See the mpfr subdirectory for 711 more information; it is not documented in the main GMP manual. 712 713 714Changes between GMP version 3.0 and 3.0.1 715 716* Memory leaks in gmp_randinit and mpz_probab_prime_p fixed. 717* Documentation for gmp_randinit fixed. Misc documentation errors fixed. 718 719 720Changes between GMP version 2.0 and 3.0 721 722* Source level compatibility with past releases (except mpn_gcd). 723* Bug fixes. 724* Much improved speed thanks to both host independent and host dependent 725 optimizations. 726* Switch to autoconf/automake/libtool. 727* Support for building libgmp as a shared library. 728* Multiplication and squaring using 3-way Toom-Cook. 729* Division using the Burnikel-Ziegler method. 730* New functions computing binomial coefficients: mpz_bin_ui, mpz_bin_uiui. 731* New function computing Fibonacci numbers: mpz_fib_ui. 732* New random number generators: mpf_urandomb, mpz_rrandomb, mpz_urandomb, 733 mpz_urandomm, gmp_randclear, gmp_randinit, gmp_randinit_lc_2exp, 734 gmp_randseed, gmp_randseed_ui. 735* New function for quickly extracting limbs: mpz_getlimbn. 736* New functions performing integer size tests: mpz_fits_sint_p, 737 mpz_fits_slong_p, mpz_fits_sshort_p, mpz_fits_uint_p, mpz_fits_ulong_p, 738 mpz_fits_ushort_p. 739* New mpf functions: mpf_ceil, mpf_floor, mpf_pow_ui, mpf_trunc. 740* New mpq function: mpq_set_d. 741* New mpz functions: mpz_addmul_ui, mpz_cmpabs, mpz_cmpabs_ui, mpz_lcm, 742 mpz_nextprime, mpz_perfect_power_p, mpz_remove, mpz_root, mpz_swap, 743 mpz_tdiv_ui, mpz_tstbit, mpz_xor. 744* New mpn function: mpn_divexact_by3. 745* New CPU support: DEC Alpha 21264, AMD K6 and Athlon, HPPA 2.0 and 64, 746 Intel Pentium Pro and Pentium-II/III, Sparc 64, PowerPC 64. 747* Almost 10 times faster mpz_invert and mpn_gcdext. 748* The interface of mpn_gcd has changed. 749* Better support for MIPS R4x000 and R5000 under Irix 6. 750* Improved support for SPARCv8 and SPARCv9 processors. 751 752 753Changes between GMP version 2.0 and 2.0.2 754 755* Many bug fixes. 756 757 758Changes between GMP version 1.3.2 and 2.0 759 760* Division routines in the mpz class have changed. There are three classes of 761 functions, that rounds the quotient to -infinity, 0, and +infinity, 762 respectively. The first class of functions have names that begin with 763 mpz_fdiv (f is short for floor), the second class' names begin with mpz_tdiv 764 (t is short for trunc), and the third class' names begin with mpz_cdiv (c is 765 short for ceil). 766 767 The old division routines beginning with mpz_m are similar to the new 768 mpz_fdiv, with the exception that some of the new functions return useful 769 values. 770 771 The old function names can still be used. All the old functions names will 772 now do floor division, not trunc division as some of them used to. This was 773 changed to make the functions more compatible with common mathematical 774 practice. 775 776 The mpz_mod and mpz_mod_ui functions now compute the mathematical mod 777 function. I.e., the sign of the 2nd argument is ignored. 778 779* The mpq assignment functions do not canonicalize their results. A new 780 function, mpq_canonicalize must be called by the user if the result is not 781 known to be canonical. 782* The mpn functions are now documented. These functions are intended for 783 very time critical applications, or applications that need full control over 784 memory allocation. Note that the mpn interface is irregular and hard to 785 use. 786* New functions for arbitrary precision floating point arithmetic. Names 787 begin with `mpf_'. Associated type mpf_t. 788* New and improved mpz functions, including much faster GCD, fast exact 789 division (mpz_divexact), bit scan (mpz_scan0 and mpz_scan1), and number 790 theoretical functions like Jacobi (mpz_jacobi) and multiplicative inverse 791 (mpz_invert). 792* New variable types (mpz_t and mpq_t) are available that makes syntax of 793 mpz and mpq calls nicer (no need for & before variables). The MP_INT and 794 MP_RAT types are still available for compatibility. 795* Uses GNU configure. This makes it possible to choose target architecture 796 and CPU variant, and to compile into a separate object directory. 797* Carefully optimized assembly for important inner loops. Support for DEC 798 Alpha, Amd 29000, HPPA 1.0 and 1.1, Intel Pentium and generic x86, Intel 799 i960, Motorola MC68000, MC68020, MC88100, and MC88110, Motorola/IBM 800 PowerPC, National NS32000, IBM POWER, MIPS R3000, R4000, SPARCv7, 801 SuperSPARC, generic SPARCv8, and DEC VAX. Some support also for ARM, 802 Clipper, IBM ROMP (RT), and Pyramid AP/XP. 803* Faster. Thanks to the assembler code, new algorithms, and general tuning. 804 In particular, the speed on machines without GCC is improved. 805* Support for machines without alloca. 806* Now under the LGPL. 807 808INCOMPATIBILITIES BETWEEN GMP 1 AND GMP 2 809 810* mpq assignment functions do not canonicalize their results. 811* mpz division functions round differently. 812* mpz mod functions now really compute mod. 813* mpz_powm and mpz_powm_ui now really use mod for reduction. 814