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<p>Dear<font size="2"><span style="font-size:10pt"> </span></font><span>Hartmut Henkel</span>,</p>
<p> I am not sure which are those functions you refer. The types of nonlinear expressions supported by SCIP can be found in SCIP documentation: <a href="https://scipopt.org/doc/html/group__DEFPLUGINS__EXPR.php" class="x_OWAAutoLink" id="LPlnk323298">https://scipopt.org/doc/html/group__DEFPLUGINS__EXPR.php</a></p>
<p> According to check.zpl file, there are some trigonmetric functions: sin, cos, tan etc. Unfortunately, SCIP only support sin and cos functions, so tan functions should be manually expanded and expressed in terms of sin and cos functions. </p>
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<p>Best regards,</p>
<p>Liding Xu</p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Scip <scip-bounces@zib.de> on behalf of Hartmut Henkel <hartmut_henkel@gmx.de><br>
<b>Sent:</b> Wednesday, February 11, 2026 3:48:55 PM<br>
<b>To:</b> scip@zib.de<br>
<b>Subject:</b> [SCIP] Patch for zimpl: sin/cos/tan/asin/acos/atan</font>
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<div class="PlainText">Hi,<br>
<br>
all these functions were "Not implemented yet" in zimpl, but the nice<br>
scaffolding was there, so it was straight-forward to activate them.<br>
<br>
Having these functions also in zimpl allows e. g., to use scip for<br>
digital FIR filter design through a few zpl lines.<br>
<br>
I would be glad if you would consider the attached patch file.<br>
<br>
Best Regards<br>
Hartmut Henkel</div>
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