https://community.nxp.com/t5/CodeWarrior-for-MCU/56800EX-math-library/m-p/2012460#M16084 <P>Hello Ben,</P> <P>Thanks for your post.&nbsp;The 56F83783 uses 56800EX core which has no FPU. It can only perform fixed-point operations and does not support floating-point. It has to rely on software simulator for floating-point operations, which is why it is slow.</P> <P>We recommend the 56F80xxx series.</P> <P><A href="https://www.nxp.com/products/MC56F80xxx" target="_blank">MC56F80xxx Digital Signal Controllers | NXP Semiconductors</A></P> <P>It uses the 56800EF core which has FPU and CORDIC and supports floating-point.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Celeste_Liu_0-1733972603987.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/315508iD030D723C1B4800F/image-size/medium?v=v2&amp;px=400" role="button" title="Celeste_Liu_0-1733972603987.png" alt="Celeste_Liu_0-1733972603987.png" /></span></P> <P>Hope it can help you.</P> <P>Best Regards,</P> <P>Celeste</P> Thu, 12 Dec 2024 03:12:03 GMT Celeste_Liu 2024-12-12T03:12:03Z https://community.nxp.com/t5/CodeWarrior-for-MCU/56800EX-math-library/m-p/2011930#M16083 <P>Hello</P><P>is it normal that the 56F83783 using is so slow in 64bit calculation?</P><P>sin calculation for float takes 80usec, (32bit library)</P><P>sin calculation for double takes 500usec. (64bit library)</P><P>if there a way to fasten the process?</P><P>ben</P><P>&nbsp;</P> Wed, 11 Dec 2024 10:33:24 GMT https://community.nxp.com/t5/CodeWarrior-for-MCU/56800EX-math-library/m-p/2011930#M16083 Ben 2024-12-11T10:33:24Z https://community.nxp.com/t5/CodeWarrior-for-MCU/56800EX-math-library/m-p/2012460#M16084 <P>Hello Ben,</P> <P>Thanks for your post.&nbsp;The 56F83783 uses 56800EX core which has no FPU. It can only perform fixed-point operations and does not support floating-point. It has to rely on software simulator for floating-point operations, which is why it is slow.</P> <P>We recommend the 56F80xxx series.</P> <P><A href="https://www.nxp.com/products/MC56F80xxx" target="_blank">MC56F80xxx Digital Signal Controllers | NXP Semiconductors</A></P> <P>It uses the 56800EF core which has FPU and CORDIC and supports floating-point.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Celeste_Liu_0-1733972603987.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/315508iD030D723C1B4800F/image-size/medium?v=v2&amp;px=400" role="button" title="Celeste_Liu_0-1733972603987.png" alt="Celeste_Liu_0-1733972603987.png" /></span></P> <P>Hope it can help you.</P> <P>Best Regards,</P> <P>Celeste</P> Thu, 12 Dec 2024 03:12:03 GMT https://community.nxp.com/t5/CodeWarrior-for-MCU/56800EX-math-library/m-p/2012460#M16084 Celeste_Liu 2024-12-12T03:12:03Z