Julien Fischer d62391b040 Allow for only a single positive leap second.
Mercury currently allows for two positive leap seconds per minute, presumably
following earlier versions of the C standard (e.g. C90). This is based on
an erroneous understanding of how UTC is defined and was corrected in C99.
(UTC allows a maximum of one leap second, positive or negative, per minute.)

library/calendar.m:
library/time.m:
    Allow only a single positive leap second per minute.

NEWS.md:
    Announce the above change.

tests/hard_coded/calendar_date_time.conv.{m,exp}:
    Update this test.
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Mercury

Mercury is a logic/functional programming language which combines the clarity and the expressiveness of declarative programming with advanced static analysis and error detection features.

More information is available on the website's about pages, in other README files in the source code repository, and in the documentation.

Small sample programs written in Mercury can be found in the samples and extras directories of the source code repository.

README files

The Mercury compiler has two different backends and works on different operating systems. Specific information is contained in individual README files in the Documentation directory:

Other information

See the current release notes for the latest stable release. The news file lists any recent changes. The files in the Documentation directory whose names start with NEWS are relevant if you want to find out more about the past development of Mercury. The limitations file lists some ways in which the Mercury implementation does not yet meet its goals.

Information for developers

If you are considering contributing to the Mercury project, the website contains some documents that may be helpful. These include a document about contributions in general and specific information about contributing such as coding styles.

Contact

See our contact page.

Description
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Readme MIT 145 MiB
Languages
Mercury 85.4%
C 8.7%
Shell 1.4%
Makefile 1%
JavaScript 1%
Other 2%