datetime::leapsecond(3) [mojave man page]

DateTime::LeapSecond(3) 				User Contributed Perl Documentation				   DateTime::LeapSecond(3)

NAME

       DateTime::LeapSecond - leap seconds table and utilities

VERSION

       version 1.06

SYNOPSIS

	 use DateTime;
	 use DateTime::LeapSecond;

	 print "Leap seconds between years 1990 and 2000 are ";
	 print DateTime::Leapsecond::leap_seconds( $utc_rd_2000 ) -
	       DateTime::Leapsecond::leap_seconds( $utc_rd_1990 );

DESCRIPTION

       This module is used to calculate leap seconds for a given Rata Die day. It is used when DateTime.pm cannot compile the XS version of this
       code.

       This library is known to be accurate for dates until December 2009.

       There are no leap seconds before 1972, because that's the year this system was implemented.

       o   leap_seconds( $rd )

	   Returns the number of accumulated leap seconds for a given day, in the range 0 .. 22.

       o   extra_seconds( $rd )

	   Returns the number of leap seconds for a given day, in the range -2 .. 2.

       o   day_length( $rd )

	   Returns the number of seconds for a given day, in the range 86398 .. 86402.

SEE ALSO

       <http://hpiers.obspm.fr/eop-pc/earthor/utc/leapsecond.html>

       http://datetime.perl.org

AUTHOR

       Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE

       This software is Copyright (c) 2013 by Dave Rolsky.

       This is free software, licensed under:

	 The Artistic License 2.0 (GPL Compatible)

perl v5.18.2							    2017-10-06						   DateTime::LeapSecond(3)

DateTime::Infinite(3)					User Contributed Perl Documentation				     DateTime::Infinite(3)

NAME

       DateTime::Infinite - Infinite past and future DateTime objects

VERSION

       version 1.06

SYNOPSIS

	 my $future = DateTime::Infinite::Future->new();
	 my $past   = DateTime::Infinite::Past->new();

DESCRIPTION

       This module provides two DateTime.pm subclasses, "DateTime::Infinite::Future" and "DateTime::Infinite::Past".

       The objects are in the "floating" timezone, and this cannot be changed.

BUGS

       There seem to be lots of problems when dealing with infinite numbers on Win32. This may be a problem with this code, Perl, or Win32's IEEE
       math implementation. Either way, the module may not be well-behaved on Win32 operating systems.

METHODS

       The only constructor for these two classes is the "new()" method, as shown in the SYNOPSIS. This method takes no parameters.

       All "get" methods in this module simply return infinity, positive or negative. If the method is expected to return a string, it return the
       string representation of positive or negative infinity used by your system. For example, on my system calling "year()" returns a number
       which when printed appears either "inf" or "-inf".

       The object is not mutable, so the "set()", "set_time_zone()", and "truncate()" methods are all do-nothing methods that simply return the
       object they are called with.

       Obviously, the "is_finite()" method returns false and the "is_infinite()" method returns true.

SEE ALSO

       datetime@perl.org mailing list

       http://datetime.perl.org/

AUTHOR

       Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE

       This software is Copyright (c) 2013 by Dave Rolsky.

       This is free software, licensed under:

	 The Artistic License 2.0 (GPL Compatible)

perl v5.18.2							    2017-10-06						     DateTime::Infinite(3)