https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809705#M846 I havethree questions:<BR /><BR />- How many terms are in your polinomials?<BR />- Did you try to substitute '<STRONG>y</STRONG>' in thepolynomial '<STRONG>z</STRONG>' and thento do normalization?<BR />- Do you have a simple C++test case?<BR /><BR />Best regards,<BR />Sergey<BR /> Fri, 08 Jun 2012 02:51:35 GMT SergeyKostrov 2012-06-08T02:51:35Z https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809704#M845 I'm using G++ 4.6.2 and visual C++ 2010.<BR />Currently using G++ 4.6.2 only addition and subtraction of polynomials is using the packed double instructions.<BR />Any hint on how to achieve the same for multiplication and divison.<BR /><BR />And then there is the operation of "apply":<BR /><BR />Having a polynomial z(y) and one y(x):<BR /><BR />z = ay + by*y + cy*y^2 + dy*y^3 + ...<BR /><BR />y = ax + bx*x + cx*x^2 + dx*x^3 + ...<BR /><BR />The task is to get z(x).<BR /><BR />Currently I'm using a class containing a double array containing the coefficients.<BR /> Sun, 03 Jun 2012 20:31:44 GMT https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809704#M845 Peter_F_1 2012-06-03T20:31:44Z https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809705#M846 I havethree questions:<BR /><BR />- How many terms are in your polinomials?<BR />- Did you try to substitute '<STRONG>y</STRONG>' in thepolynomial '<STRONG>z</STRONG>' and thento do normalization?<BR />- Do you have a simple C++test case?<BR /><BR />Best regards,<BR />Sergey<BR /> Fri, 08 Jun 2012 02:51:35 GMT https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809705#M846 SergeyKostrov 2012-06-08T02:51:35Z https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809706#M847 <DIV id="tiny_quote"><DIV style="margin-left: 2px; margin-right: 2px;">Quoting <A jquery1339473024031="58" rel="/en-us/services/profile/quick_profile.php?is_paid=&amp;user_id=174856" href="https://community.intel.com/en-us/profile/174856/" class="basic">foelsche@sbcglobal.net</A></DIV><DIV style="background-color: #e5e5e5; margin-left: 2px; margin-right: 2px; border: 1px inset; padding: 5px;"><I>...And then there is the operation of "<STRONG><SPAN style="text-decoration: underline;">apply</SPAN></STRONG>"...</I></DIV><BR />Could you provide more details? Is'<STRONG>apply</STRONG>' a method declared and implementedin your class?</DIV> Tue, 12 Jun 2012 04:50:08 GMT https://community.intel.com/t5/Software-Tuning-Performance/operations-with-polynomial/m-p/809706#M847 SergeyKostrov 2012-06-12T04:50:08Z