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<feed xml:lang="en" xmlns="http://www.w3.org/2005/Atom"><title>Recent posts to EXPT vs pow in &lt;cmath&gt;</title><link href="https://forge.codesys.com/forge/talk/Engineering/thread/2221ea678a/" rel="alternate"/><link href="https://forge.codesys.com/forge/talk/Engineering/thread/2221ea678a/feed.atom" rel="self"/><id>https://forge.codesys.com/forge/talk/Engineering/thread/2221ea678a/</id><updated>2022-07-14T10:34:50.929000Z</updated><subtitle>Recent posts to EXPT vs pow in &lt;cmath&gt;</subtitle><entry><title>EXPT vs pow in &lt;cmath&gt;</title><link href="https://forge.codesys.com/forge/talk/Engineering/thread/2221ea678a/?limit=25#53af" rel="alternate"/><published>2022-07-14T10:34:50.929000Z</published><updated>2022-07-14T10:34:50.929000Z</updated><author><name>mondinmr</name><uri>https://forge.codesys.com/u/mondinmr/</uri></author><id>https://forge.codesys.comacc88bd7b36d407b3a37d89ea9e8198a7a8926a0</id><summary type="html">&lt;div class="markdown_content"&gt;&lt;p&gt;We are working on a direct transform.&lt;br/&gt;
If we use only one EXPT(val, 4) result is similar to pow(val, 4) (NOT EQUAL).&lt;br/&gt;
Problem in ARM 64 runtime came when we have a very long calculation with 5 EXPT summed.&lt;br/&gt;
OCTAVE, Matlab and C return same value, but ST using EXPT no with a big error.&lt;br/&gt;
Why?&lt;/p&gt;&lt;/div&gt;</summary></entry></feed>