On Wed, 18 Jun 2008 07:12:21 -0500, Chase, John wrote: >> >> What industry-wide standard specifies reliance on CVTLDTO and CVTLSO? > >I have the possibly mistaken impression that time references provided by > Not mistaken.
>the US government's "official time" sources already include the >adjustments for leap seconds. If that's true, then of what use is >CVTLSO? > Because it would be impractical to consult those "official time" sources every time a program invoked the TIME macro or similar facilities, there is a higher stratum local reference source, the [E]TOD clock. In order that the hardware TOD clock can run at a fairly uniform rate and not show a discontinuity at a leap second, CVTLSO exists and is adjusted at the occurrence of a leap second for TIME, etc. to use as a correction to the TOD clock for practical calculation of UTC. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
