Thank you for tips.<br>Let me try to figure it out myself first.<br><br><div><span class="gmail_quote">2007/2/1, Sheplyakov Alexei <<a href="mailto:varg@theor.jinr.ru">varg@theor.jinr.ru</a>>:</span><blockquote class="gmail_quote" style="margin-top: 0; margin-right: 0; margin-bottom: 0; margin-left: 0; margin-left: 0.80ex; border-left-color: #cccccc; border-left-width: 1px; border-left-style: solid; padding-left: 1ex">
Hi!<br><br>On Wed, Jan 31, 2007 at 10:16:56PM +0800, Zhongxing Xu wrote:<br><br>> Is there something like array expression in GiNaC?<br><br>Could you elaborate, please? What is exactly "array expression"?<br>
<br>> For example:<br>> x = mem[2] + 2;<br>> y = mem[i] -3;<br>> Can GiNaC represent these expressions?<br>> Note that array index might be a symbolic value.<br><br>GiNaC supports associative arrays with expressions as keys,
i.e.<br><br>symbol x("x"), y("y"), z("z");<br>exmap m; // nothing really magic: std::map<ex, ex, ex_is_less><br>m[z] = 2*x + y;<br>m[1] = sin(y);<br><br>> x >= 3;<br><br>Syntactically, this is correct GiNaC code. It creates object of
<br>the GiNaC::relational type. But I wonder what is _your_ interpretation...<br><br>> After checking out the reference manual of GiNaC, I guess class idx and<br>> varidx and indexed() is the thing for me. Is it right?
<br><br>I don't think so.<br><br>Best regards,<br> Alexei<br><br>--<br>All science is either physics or stamp collecting.<br><br><br><br>-----BEGIN PGP SIGNATURE-----<br>Version: GnuPG v1.4.3 (GNU/Linux)<br><br>iQIVAwUBRcDJebL3rFoFceCwAQLvdw//cTzW84BkgGzzrBxXDdLFnlD+2I3+JYL+
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