topic CodeWarrior Version 5.1 and Floating Point Library in CodeWarrior Development Tools https://community.nxp.com/t5/CodeWarrior-Development-Tools/CodeWarrior-Version-5-1-and-Floating-Point-Library/m-p/657475#M5816 <HTML><HEAD></HEAD><BODY><P>On of our customer is using CodeWarrior Development Studio for the S12(X) Version 5.1, build 10221. He is testing how the floating point library handles overflow.&nbsp; If &nbsp;he multiply 1.8e19 times 1.8e19 it gives him +INF (0x7f800000) which is what he would expect.&nbsp; If he multiply 3.4e19 time 1.8e19, I get NAN, which he did not expect. &nbsp;He was expecting +INF.&nbsp; If he multiply 3.4e19 time 3.4e19 &nbsp;he gets -0 (0x80000000). This one is a problem.&nbsp; In a control system you never want to get 0 when multiplying two large numbers together.&nbsp; Do you have any idea how he can trap this overflow so he don’t get 0 for his result?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Regards,</P><P>hy</P></BODY></HTML> Tue, 03 Jan 2017 09:14:48 GMT HeMyFAE 2017-01-03T09:14:48Z CodeWarrior Version 5.1 and Floating Point Library https://community.nxp.com/t5/CodeWarrior-Development-Tools/CodeWarrior-Version-5-1-and-Floating-Point-Library/m-p/657475#M5816 <HTML><HEAD></HEAD><BODY><P>On of our customer is using CodeWarrior Development Studio for the S12(X) Version 5.1, build 10221. He is testing how the floating point library handles overflow.&nbsp; If &nbsp;he multiply 1.8e19 times 1.8e19 it gives him +INF (0x7f800000) which is what he would expect.&nbsp; If he multiply 3.4e19 time 1.8e19, I get NAN, which he did not expect. &nbsp;He was expecting +INF.&nbsp; If he multiply 3.4e19 time 3.4e19 &nbsp;he gets -0 (0x80000000). This one is a problem.&nbsp; In a control system you never want to get 0 when multiplying two large numbers together.&nbsp; Do you have any idea how he can trap this overflow so he don’t get 0 for his result?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Regards,</P><P>hy</P></BODY></HTML> Tue, 03 Jan 2017 09:14:48 GMT https://community.nxp.com/t5/CodeWarrior-Development-Tools/CodeWarrior-Version-5-1-and-Floating-Point-Library/m-p/657475#M5816 HeMyFAE 2017-01-03T09:14:48Z Re: CodeWarrior Version 5.1 and Floating Point Library https://community.nxp.com/t5/CodeWarrior-Development-Tools/CodeWarrior-Version-5-1-and-Floating-Point-Library/m-p/657476#M5817 <HTML><HEAD></HEAD><BODY><P>Hi hy</P><P>Can you please provide a demo project for this problem?</P><P>Thanks!</P><P><BR />Have a great day,<BR />Jennie Zhang</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 06 Jan 2017 10:14:18 GMT https://community.nxp.com/t5/CodeWarrior-Development-Tools/CodeWarrior-Version-5-1-and-Floating-Point-Library/m-p/657476#M5817 ZhangJennie 2017-01-06T10:14:18Z