How to resolve the algorithm Show the epoch step by step in the PL/I programming language

Published on 12 May 2024 09:40 PM
#Pl/i

How to resolve the algorithm Show the epoch step by step in the PL/I programming language

Table of Contents

Problem Statement

Choose popular date libraries used by your language and show the   epoch   those libraries use. A demonstration is preferable   (e.g. setting the internal representation of the date to 0 ms/ns/etc.,   or another way that will still show the epoch even if it is changed behind the scenes by the implementers),   but text from (with links to) documentation is also acceptable where a demonstration is impossible/impractical. For consistency's sake, show the date in UTC time where possible.

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Step by Step solution about How to resolve the algorithm Show the epoch step by step in the PL/I programming language

Source code in the pl/i programming language

*process source attributes xref;
 epoch: Proc Options(main);
 /*********************************************************************
 * 20.08.2013 Walter Pachl  shows that PL/I uses 15 Oct 1582 as epoch
 * DAYS returns a FIXED BINARY(31,0) value which is the number of days
 * (in Lilian format) corresponding to the date d.
 *********************************************************************/
 Dcl d Char(17);
 Put Edit(datetime(),days(datetime()))
         (Skip,a,f(15));
 d='15821015000000000';
 Put Edit(d         ,days(d))
         (Skip,a,f(15));
 d='15821014000000000';
 Put Edit(d         ,days(d))
         (Skip,a,f(15));
 End;

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