emacs/src/bignum.h, branch scratch/org-sync Emacs is the extensible, customizable, self-documenting real-time display editor. Update copyright year to 2021 2021-01-01T09:13:56+00:00 Paul Eggert 2021-01-01T09:13:56+00:00 ba05d005e5a81bc123ad8da928b1bccb6b160e7a Run "TZ=UTC0 admin/update-copyright". 
Run "TZ=UTC0 admin/update-copyright".
Use Gnulib libgmp module 2020-07-09T23:38:45+00:00 Paul Eggert 2020-07-09T23:35:48+00:00 c8b6006d82196f9063581e988ea12d6c99c95536 Instead of doing GMP by hand, use the Gnulib libgmp module. * .gitignore: Add lib/gmp.h. * admin/merge-gnulib (GNULIB_MODULES): Add libgmp. * configure.ac (GMP_LIB, GMP_OBJ): Remove. Gnulib uses the name LIB_GMP, so all uses changed. All uses of GMP_OBJ removed. (HAVE_GMP): Set this from Gnulib’s variables. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * lib/mini-gmp-gnulib.c, lib/mini-gmp.c, lib/mini-gmp.h, m4/libgmp.m4: New files, copied from Gnulib. * src/bignum.h, test/data/emacs-module/mod-test.c: Include gmp.h unconditionally. * src/mini-gmp-emacs.c, src/mini-gmp.c, src/mini-gmp.h: Remove. This moves these files from src to lib, and updates them to the current GMP version. * test/Makefile.in (GMP_H): New macro. ($(test_module)): Use it to decide whether to compile mini-gmp-gnulib.c too. 
Instead of doing GMP by hand, use the Gnulib libgmp module.
* .gitignore: Add lib/gmp.h.
* admin/merge-gnulib (GNULIB_MODULES): Add libgmp.
* configure.ac (GMP_LIB, GMP_OBJ): Remove.  Gnulib uses the name
LIB_GMP, so all uses changed.  All uses of GMP_OBJ removed.
(HAVE_GMP): Set this from Gnulib’s variables.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* lib/mini-gmp-gnulib.c, lib/mini-gmp.c, lib/mini-gmp.h, m4/libgmp.m4:
New files, copied from Gnulib.
* src/bignum.h, test/data/emacs-module/mod-test.c:
Include gmp.h unconditionally.
* src/mini-gmp-emacs.c, src/mini-gmp.c, src/mini-gmp.h:
Remove.  This moves these files from src to lib, and
updates them to the current GMP version.
* test/Makefile.in (GMP_H): New macro.
($(test_module)): Use it to decide whether to compile
mini-gmp-gnulib.c too.
Pacify buggy old GCC with a cast 2020-05-06T18:01:57+00:00 Paul Eggert 2020-05-06T17:57:18+00:00 02f5a419fdcfb3fb6c8a3e4debe7224010b40227 * src/bignum.h (bignum_integer): Pacify GCC 4.8.5. Problem reported by Andreas Schwab in: https://lists.gnu.org/r/emacs-devel/2020-05/msg00781.html 
* src/bignum.h (bignum_integer): Pacify GCC 4.8.5.
Problem reported by Andreas Schwab in:
https://lists.gnu.org/r/emacs-devel/2020-05/msg00781.html
Use ATTRIBUTE_CONST for some bignum functions 2020-03-27T21:18:13+00:00 Paul Eggert 2020-03-27T21:17:44+00:00 90b6ba0a1697c07a668be1776f22246470682724 * src/bignum.h (mpz_get_d_rounded): * src/lisp.h (bignum_to_double, bignum_to_intmax) (bignum_to_uintmax, bignum_bufsize): Declare as ATTRIBUTE_CONST. 
* src/bignum.h (mpz_get_d_rounded):
* src/lisp.h (bignum_to_double, bignum_to_intmax)
(bignum_to_uintmax, bignum_bufsize):
Declare as ATTRIBUTE_CONST.
Update copyright year to 2020 2020-01-01T00:59:52+00:00 Paul Eggert 2020-01-01T00:19:43+00:00 365e01cc9f64ce6ca947ccfd8612d60763280a37 Run "TZ=UTC0 admin/update-copyright $(git ls-files)". 
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
Refactor bignum multiplication, exponentiation 2019-11-13T21:10:09+00:00 Paul Eggert 2019-11-13T20:10:31+00:00 02e637ecca3b1419d2a6c433eca72c5728c65051 This doesn’t alter behavior, and simplifies the next commit. * src/bignum.c (GMP_NLIMBS_MAX, NLIMBS_LIMIT, emacs_mpz_size) (emacs_mpz_mul, emacs_mpz_mul_2exp, emacs_mpz_pow_ui): Move here ... * src/data.c: ... from here. 
This doesn’t alter behavior, and simplifies the next commit.
* src/bignum.c (GMP_NLIMBS_MAX, NLIMBS_LIMIT, emacs_mpz_size)
(emacs_mpz_mul, emacs_mpz_mul_2exp, emacs_mpz_pow_ui): Move here ...
* src/data.c: ... from here.
Be more careful about pointers to bignum vals 2019-08-21T07:11:45+00:00 Paul Eggert 2019-08-21T07:06:00+00:00 39fee209942ab7c35b4789f0010264cd6a52197b This uses ‘const’ to be better at catching bugs that mistakenly attempt to modify a bignum value. Lisp bignums are supposed to be immutable. * src/alloc.c (make_pure_bignum): * src/fns.c (sxhash_bignum): Accept Lisp_Object instead of struct Lisp_Bignum *, as that’s simpler now. Caller changed. * src/bignum.h (bignum_val, xbignum_val): New inline functions. Prefer them to &i->value and XBIGNUM (i)->value, since they apply ‘const’ to the result. * src/timefns.c (lisp_to_timespec): Use mpz_t const * to point to a bignum value. 
This uses ‘const’ to be better at catching bugs that
mistakenly attempt to modify a bignum value.
Lisp bignums are supposed to be immutable.
* src/alloc.c (make_pure_bignum):
* src/fns.c (sxhash_bignum):
Accept Lisp_Object instead of struct Lisp_Bignum *, as that’s
simpler now.  Caller changed.
* src/bignum.h (bignum_val, xbignum_val): New inline functions.
Prefer them to &i->value and XBIGNUM (i)->value, since they
apply ‘const’ to the result.
* src/timefns.c (lisp_to_timespec): Use mpz_t const *
to point to a bignum value.
Avoid some excess precision in time arithmetic 2019-08-21T00:36:46+00:00 Paul Eggert 2019-08-21T00:34:03+00:00 396ed88a50fba95cd3b989965defef0130a42c42 * doc/misc/emacs-mime.texi (time-date): Adjust example to match new behavior. * etc/NEWS: Mention this. * lisp/calendar/time-date.el (decoded-time-add) (decoded-time--alter-second): Don’t lose underestimate precision of seconds component. * src/bignum.c (mpz): Grow by 1. * src/timefns.c (trillion_factor): New function. (timeform_sub_ps_p): Remove. (time_arith): Avoid unnecessarily-large hz, by reducing the hz to a value no worse than the worse hz of the two arguments. The result is always exact unless an error is signaled. * test/src/timefns-tests.el (timefns-tests--decode-time): New function. (format-time-string-with-zone): Test (decode-time LOOK ZONE t) resolution as well as its numeric value. 
* doc/misc/emacs-mime.texi (time-date):
Adjust example to match new behavior.
* etc/NEWS: Mention this.
* lisp/calendar/time-date.el (decoded-time-add)
(decoded-time--alter-second):
Don’t lose underestimate precision of seconds component.
* src/bignum.c (mpz): Grow by 1.
* src/timefns.c (trillion_factor): New function.
(timeform_sub_ps_p): Remove.
(time_arith): Avoid unnecessarily-large hz, by reducing the hz
to a value no worse than the worse hz of the two arguments.
The result is always exact unless an error is signaled.
* test/src/timefns-tests.el (timefns-tests--decode-time):
New function.
(format-time-string-with-zone): Test (decode-time LOOK ZONE t)
resolution as well as its numeric value.
Improve bignum_integer static checking 2019-08-18T19:12:45+00:00 Paul Eggert 2019-08-18T19:11:06+00:00 780509f29f0aa006a578744f7e871eb6d5ce5931 * src/bignum.h (bignum_integer): Now returns pointer-to-const, to catch trivial mistakes where the caller might try to modify a Lisp bignum. Lisp bignums are supposed to be immutable. All callers changed. 
* src/bignum.h (bignum_integer): Now returns pointer-to-const,
to catch trivial mistakes where the caller might try to modify
a Lisp bignum.  Lisp bignums are supposed to be immutable.
All callers changed.
Refactoring: Factor out a function to set an mpz_t from a Lisp int. 2019-05-04T21:31:40+00:00 Philipp Stephani 2019-05-04T21:31:40+00:00 9684296a5d3405885e44d0b422deef19329567ef * src/bignum.h (mpz_set_integer): New function. * src/emacs-module.c (module_make_big_integer): Use it. 
* src/bignum.h (mpz_set_integer): New function.

* src/emacs-module.c (module_make_big_integer): Use it.