Hi Lisa: My understanding has been that number_of_ticks is required to be a compile-time constant. I don't see this specified in Draft 4. J.H. > X-eda.org-MailScanner-Watermark: 1205873043.39214@PsqPuPKNQzi21/PzBMxjFA > X-Authentication-Warning: server.eda.org: majordom set sender to owner-sv-ac@eda.org using -f > X-eda.org-MailScanner-Watermark: 1205872967.19742@Me7stFMVwFNYEfAFfe4Wyg > X-MimeOLE: Produced By Microsoft Exchange V6.5 > Content-class: urn:content-classes:message > Date: Tue, 11 Mar 2008 16:42:45 -0400 > X-MS-Has-Attach: > X-MS-TNEF-Correlator: > Thread-Topic: $past question > Thread-Index: AciDuHXtaq1dlUJQR7GK5j1/BlA4SQ== > From: "Lisa Piper" <piper@cadence.com> > X-Received: By mx-sanjose2.Cadence.COM as m2BKgj3M026962 at Tue Mar 11 13:42:45 2008 > X-eda.org-MailScanner: Found to be clean, Found to be clean > X-Spam-Status: No, No > Sender: owner-sv-ac@eda.org > X-eda.org-MailScanner-Information: Please contact the ISP for more information > X-MailScanner-ID: m2BKhXX5000346 > X-eda.org-MailScanner-From: owner-sv-ac@server.eda.org > X-OriginalArrivalTime: 11 Mar 2008 20:48:12.0678 (UTC) FILETIME=[38E50260:01C883B9] > > This is a multi-part message in MIME format. > > ------_=_NextPart_001_01C883B8.74469B2C > Content-Type: text/plain; > charset="us-ascii" > Content-Transfer-Encoding: quoted-printable > > In the syntax for $past, > > $past( expression1 [, number_of_ticks] [, expression2] [, > clocking_event]) > > Is "number_of_ticks" required to be static or can it be variable? PSL > requires that it is static, which allows performance optimizations. I > don't see this in the SVA LRM even after Mantis 1698. I'm not sure if > it is an oversight or if people really want to allow variable numbers. > And if it is variable, is there an upper limit? > > Lisa > > --=20 > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > > ------_=_NextPart_001_01C883B8.74469B2C > Content-Type: text/html; > charset="us-ascii" > Content-Transfer-Encoding: quoted-printable > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> > <HTML> > <HEAD> > <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; charset=3Dus-ascii"> > <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version 6.5.7652.24"> > <TITLE>$past question</TITLE> > </HEAD> > <BODY> > <!-- Converted from text/rtf format --> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">In the</FONT> <FONT = > FACE=3D"Arial">syntax for $past,</FONT></SPAN></P> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial"> &n= > bsp; </FONT></SPAN><SPAN LANG=3D"en-us"> = > <FONT FACE=3D"Arial"></FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG= > =3D"en-us"> <FONT SIZE=3D2 FACE=3D"Courier New">$past( expression1 [, numbe= > r_of_ticks] [, expression2] [, clocking_event])</FONT></SPAN></P> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN></P> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">I</FONT><FONT FACE= > =3D"Arial">s</FONT></SPAN><SPAN LANG=3D"en-us"> <FONT FACE=3D"Arial">“= > ;</FONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">number_of_ticks</F= > ONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">”</FONT></SPAN><= > SPAN LANG=3D"en-us"><FONT FACE=3D"Arial"> required to be static or can it b= > e variable?</FONT></SPAN><SPAN LANG=3D"en-us"> <FONT FACE=3D"Arial"></= > FONT></SPAN><SPAN LANG=3D"en-us"> <FONT FACE=3D"Arial">PSL requires that it= > is static</FONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">,</FONT><= > /SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial"> which allows performance o= > ptim</FONT><FONT FACE=3D"Arial">izations. I</FONT><FONT FACE=3D"Arial= > "> don</FONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">’</FONT= > ></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">t see this in the SVA LRM= > </FONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial"> even after Mantis = > 1698</FONT></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">. I</FONT= > ></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">’</FONT></SPAN><SPA= > N LANG=3D"en-us"><FONT FACE=3D"Arial">m not sure if it is an oversight or i= > f people really want to allow variable numbers.</FONT> <FONT FACE=3D"Arial"= > > </FONT> <FONT FACE=3D"Arial">And if it is variable, is there an uppe= > r limit?</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN></P> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN></P> > > <P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT FACE=3D"Arial">Lisa</FONT></SPAN><S= > PAN LANG=3D"en-us"></SPAN></P> > > </BODY> > <br />--=20 > <br />This message has been scanned for viruses and > <br />dangerous content by > <a href=3D"http://www.mailscanner.info/"><b>MailScanner</b></a>, and is > <br />believed to be clean. > </HTML> > > ------_=_NextPart_001_01C883B8.74469B2C-- -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Wed Mar 12 02:57:34 2008
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