libraries/hinnant-date: Added (A date and time library).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/libraries/hinnant-date/README b/libraries/hinnant-date/README
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+This is actually several separate C++11/C++14 libraries:
+
+ - date.h is a header-only library which builds upon <chrono>. 
+   It adds some new duration types, and new time_point types. It 
+   also adds field types such as year_month_day which is a 
+   struct {year, month, day}. And it provides convenient means 
+   to convert between the field types and the time_point types. 
+    
+ - tz.h / tz.cpp are a timezone library built on top of the 
+   date.h library. This timezone library is a complete parser 
+   of the IANA timezone database. It provides for an easy way to 
+   access all of the data in this database, using the types from 
+   date.h and <chrono>. The IANA database also includes data 
+   on leap seconds, and this library provides utilities to compute 
+   with that information as well. 
+
+ - chrono_io.h is a header-only library for streaming out chrono 
+   durations.
+
+ - iso_week.h is a header-only library built on top of the 
+   date.h library which implements the ISO week date calendar. 
+
+ - julian.h is a header-only library built on top of the date.h 
+   library which implements a proleptic Julian calendar which is 
+   fully interoperable with everything above. 
+
+ - islamic.h is a header-only library built on top of the 
+   date.h library which implements a proleptic Islamic calendar 
+   which is fully interoperable with everything above.
+
+date.h and tz.h are now being proposed for standardization:
+http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0355r1.html