Changes

Release 1.12 (2021-03-03)
- PR #79: fast path in OCaml (instead of assembly language) [Xavier Leroy]
- PR #94: remove source preprocessing and simplify configuration [Xavier Leroy]
- PR #93: fix parallel build [Guillaume Melquiond]
- PR #92: fix benchmark for subtraction [Guillaume Melquiond]
- Require OCaml 4.04 or later [Xavier Leroy]
- Add CI testing on macOS  [Xavier Leroy]

Release 1.11 (2020-11-09)
- Fixes #72, #75, #78: multiple fixes for of_string, support for underscores [hhugo]
- Fix #74: fix Q.to_float for denormal numbers [pascal-cuoq]
- Fix #84: always represent min_int by a tagged integer [xavierleroy]
- muliple fixes for min_int arguments [xavierleroy]
- Improvement #85: optimize the fast paths for comparison and equality tests [xavierleroy]
- Fix #80: ar tool is detected in configure [jsmolic]

Release 1.10 (2020-09-11)
- Improvement #66: added some mpz functions (divisible, congruent, jacobi, legendre, krobecker, remove, fac, primorial, bin, fib, lucnum)
- Improvement #65: Q.of_string now handles decimal point and scientific notation [Ghiles Ziat]
- Fix #60: Z.root now raises an exception for invalid arguments
- Fix #62: raise division by 0 for 0-modulo in powm
- Fix #59: improved abs for negative arguments
- Fix #58: gcd, lcm, gcdext now behave as gmp for negative arguments
- Fix #57: clean compile with safe strings [hhugo]

Release 1.9.1 (2019-08-28) (bugfix):
- Fix configure issue for non-bash sh introduced in #45
- Tweaks to opam file [kit-ty-kate]

Release 1.9 (2019-08-22):
- Issue #50: add opam file, make it easy to "opam publish" new versions
- Issue #38: configure detects 32bit OCaml switch on 64bit host
- Fix #36: change Q.equal, leq, geq comparisons for undef
- Request #47: move infix comparison operators of Z in submodule 
  avoid shadowing the polymorphic compare [Bernhard Schommer]
- Fix #49: INT_MAX undeclared
- Request #46: add prefixnonocaml option [Et7f3]
- Request #45: fix ocamllibdir/caml/mlvalues.h bug (Cygwin) [Et7f3]
- Fix: attempting to build numbers too large for GMP raises an OCaml exception
  instead of crashing with "gmp: overflow in mpz type"

Release 1.8 (2019-03-30):
- Request #20: infix comparison operators for Q and Z [Max Mouratov]
- Request #39: gdc(x,0) = gcd(0,x) = x [Vincent Laporte]
- Request #41: support for upcoming OCaml 4.08 [Daniel Hillerström]
- Issue #17: add package zarith.top with REPL printer [Christophe Troestler]
- Issue #22: wrong stack marking directive in caml_z_x86_64_mingw64.S
  [Bernhard Schommer]
- Issue #24: generate and install .cmti files for easy access to documentation
- Issue #25: false alarm in tests/zq.ml owing to unreliable printing  
  of FP values
- Request #28: better handling of absolute paths in "configure" 

Release 1.7 (2017-10-13):
- Issue#14, pull request#15: ARM assembly code was broken.
- Fix tests so that they work even if the legacy Num library is unavailable.

Release 1.6 (2017-09-23):
- On Linux and BSD, keep the stack non-executable.
- Issue#10: clarify documentation of Q.of_string
- Fixed spurious installation error if shared libraries not supported
  [Bernhard Schommer]

Release 1.5 (2017-05-26):
- Install all .cmx files, improving performance of clients and
  avoiding a warning from OCaml 4.03 and up.
- Z.of_float: fix a bug in the fast path [Richard Jones]
  (See https://bugzilla.redhat.com/show_bug.cgi?id=1392247)
- Improve compatibility with OCaml 4.03 and up
  [Bernhard Schommer]
- Overflow issue in Z.pow and Z.root with very large exponents (GPR#5)
  [Andre Maroneze]
- Added function Q.to_float.

Release 1.4.1 (2015-11-09):
- Fixed ml_z_of_substring_base and Z.of_substring [Thomas Braibant]
- Integrated Opam fix for Perl scripts [Thomas Braibant]

Release 1.4 (2015-11-02):
- Improvements to Q (using divexact) [Bertrand Jeannet]
- Fixed div_2exp bug [Bertrand Jeannet]
- Improvements for divexact [Bertrand Jeannet]
- Added of_substring, with fast path for native integers [Thomas Braibant]
- Added Z.powm_sec (constant-time modular exponentiation)
- Reimplemented Z.to_float, now produces correctly rounded FP numbers
- Added Z.trailing_zeros.
- Added Z.testbit, Z.is_even, Z.is_odd.
- Added Z.numbits, Z.log2 and Z.log2up.
- PR#1467: Z.hash is declared as "noalloc" [François Bobot]
- PR#1451: configure fix [Spiros Eliopoulos]
- PR#1436: disable "(void)" trick for unused variables on Windows [Bernhard Schommer]
- PR#1434: removed dependencies on printf & co when Z_PERFORM_CHECK is 0 [Hannes Mehnert]
- PR#1462: issues with Z.to_float and large numbers.

Release 1.3 (2014-09-03):
- Fixed inefficiencies in asm fast path for ARM.
- Revised detection of NaNs and infinities in Z.of_float
- Suppress the redundant fast paths written in C if a corresponding
  fast path exists in asm.
- Use <stdint.h> to ensure compatibility with OCaml 4.02.
- More prudent implementation of Z.of_int, avoids GC problem
  with OCaml < 4.02 (PR#6501 in the OCaml bug tracker).
- PR#1429: of_string accepts 'a' in base 10.
- Macro change to avoid compiler warnings on unused variables.

Release 1.2.1 (2013-06-12):
- Install fixes

Release 1.2 (2013-05-19):
- Added fast asm path for ARMv7 processors.
- PR#1192: incorrect behavior of div_2exp
- Issue with aggressive C compiler optimization in the fast path for multiply
- Better support for Windows/Mingw32

Release 1.1 (2012-03-24):
- Various improvements in the asm fast path for i686 and x86_64
- PR#1034: support for static linking of GMP/MPIR
- PR#1046: autodetection of ocamlopt and dynlink
- PR#1048: autodetection of more platforms that we support
- PR#1051: support architectures with strict alignment constraints for 
    64-bit integers (e.g. Sparc)
- Fixed 1-bit precision loss when converting doubles to rationals
- Improved support for the forthcoming release 4.00 of OCaml

Release 1.0 (2011-08-18):
- First public release