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Mark H Weaver e00563492a SRFI-19: Fix TAI->UTC conversions, leap second handling, etc.
Fixes <https://bugs.gnu.org/21911>.
Fixes <https://bugs.gnu.org/22034>.
Fixes <https://bugs.gnu.org/21902>.
Partially fixes <https://bugs.gnu.org/21904>.
Reported by Zefram <zefram@fysh.org>.

* doc/ref/srfi-modules.texi (SRFI-19 Introduction): Fix the definitions
of Julian Day and Modified Julian Day.  Give the correct full names of
UTC and TAI.
* module/srfi/srfi-19.scm: Import (srfi srfi-1).  Use modern Guile
keyword syntax in the 'define-module' form.
(leap-second-neg-delta): New procedure, derived from a similar procedure
in the latest upstream SRFI-19 reference implementation.
(priv:time-tai->time-utc!, time-tai->julian-day)
(time-monotonic->julian-day): Use 'leap-second-neg-delta'.
(local-tz-offset): Fix comment.
(leap-second?): Remove.
(tai-before-leap-second?): New procedure, derived from upstream SRFI-19.
(time-utc->date): Use 'define*' to handle the optional argument.  Remove
the leap second handling, following upstream SRFI-19.
(time-tai->date): Rewrite in terms of 'time-utc->date'.  Add special
leap second handling, following upstream SRFI-19.
(time-monotonic->date): Rewrite in terms of 'time-tai->date'.
(date->time-tai, date->time-monotonic): Add special leap second
handling, following upstream SRFI-19.
(directives): In the entry for the "~Y" escape in 'date->string', pad
the year field to 4 characters, following upstream SRFI-19.
* test-suite/tests/srfi-19.test: Add tests.
2019-05-23 17:13:03 +02:00
..
r5rs doc: Allow compilation of r5rs.texi with Texinfo 5.0. 2013-03-07 00:05:46 +01:00
ref SRFI-19: Fix TAI->UTC conversions, leap second handling, etc. 2019-05-23 17:13:03 +02:00
.gitignore More `.gitignore'. 2008-04-07 23:48:48 +02:00
BUGS Move doc files into guile-core distribution (6) 2001-03-09 09:20:46 +00:00
ChangeLog-2008 Rename ChangeLog' files to ChangeLog-2008'. 2008-09-12 21:49:58 +02:00
ChangeLog-guile-doc Move doc files into guile-core distribution (6) 2001-03-09 09:20:46 +00:00
gendocs_template Update Gnulib to v0.1-1157-gb03f418. 2017-02-15 21:41:24 +01:00
gendocs_template_min Update Gnulib to v0.1-1157-gb03f418. 2017-02-15 21:41:24 +01:00
goops.mail Initial revision 2000-08-22 15:54:19 +00:00
groupings.alist Change Guile license to LGPLv3+ 2009-06-17 00:22:09 +01:00
guile-api.alist Deprecate scm_array_fill_int() 2013-04-05 22:54:14 +02:00
guile.1 Update effective version to 3.0 2017-05-22 14:15:40 +02:00
hacks.el * hacks.el: Some handy helper functions for working on the manual. 1998-10-15 21:48:23 +00:00
Makefile.am Remove doc/example-smob/ 2014-04-28 17:46:59 +02:00
NEWS merge from 1.8 branch 2006-04-16 23:18:55 +00:00
README Remove doc/example-smob/ 2014-04-28 17:46:59 +02:00
recipe-guidelines.txt * Added recipe-guidelines.txt. 2001-04-20 11:20:06 +00:00
release.org Update release docs. 2018-08-07 12:33:19 +02:00
texinfo.tex autotooling, version bump to 0.7 2008-05-20 12:10:18 +02:00
THANKS * Grammar fix. 2001-06-27 18:12:46 +00:00
use-cases.fig Created a usecase diagram for Guile. 2001-05-24 08:46:50 +00:00
use-cases.txt Created a usecase diagram for Guile. 2001-05-24 08:46:50 +00:00

This directory contains documentation on the Guile core.         -*-text-*-

The documentation consists of the following manuals.

- The Guile Tutorial (guile-tut.texi) contains a tutorial introduction
  to using Guile.

- The Guile Reference Manual (guile.texi) contains (or is intended to
  contain) reference documentation on all aspects of Guile.

- The Revised^5 Report on the Algorithmic Language Scheme (r5rs.texi).

Please be aware that this is all very much work in progress (apart
from the Revised^5 Report).  Bug reports and contributions are
welcome!

The `sources' directory includes some stuff relevant to the Guile
reference manual, and which may eventually be folded in to it.  It's
not immediately relevant, however, which is why it's not in this
directory.

The Revised^4 Report (r4rs.texi) is no longer in this distribution, as
it is completely superseded by the Revised^5 Report.  If you need to
consult R4RS, it is still widely available, for example at
http://www-swiss.ai.mit.edu/projects/info/SchemeDocs/r4rs/.