https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976149#M21012 <DIV>Hi, </DIV> <DIV>Thank you very much for your response.</DIV> <DIV></DIV> <DIV>I am doing something on image processing. In this project, the image size is 4096X4096 or above, I have to perform the FFTs of 4-6 images andpeferform some operations among them, so, sometimes, the result became overflow. If in double type, no overflow,<EM> </EM>I think.</DIV> <DIV></DIV> <DIV>(I have tried to divide a constant after FFT, but it is possible to lose accuracy, is not it?).</DIV> <DIV></DIV> <DIV>Best reagrads,</DIV> <DIV>Li</DIV> Thu, 08 Jan 2004 14:15:39 GMT junli 2004-01-08T14:15:39Z https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976147#M21010 <DIV>Hi, </DIV> <DIV></DIV> <DIV>In IPP 3.0, FFT2 only suports float data format. double is supoorte in IPP 4.0?</DIV> Tue, 06 Jan 2004 15:25:12 GMT https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976147#M21010 junli 2004-01-06T15:25:12Z https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976148#M21011 Dear Customer,<BR /> <DIV>Double type is not supported in Intel IPP 4.0 neither, what is your concern for this data type in 2D FFT?</DIV> <DIV><BR />Thanks,<BR />Ying </DIV> Thu, 08 Jan 2004 13:27:03 GMT https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976148#M21011 Ying_S_Intel 2004-01-08T13:27:03Z https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976149#M21012 <DIV>Hi, </DIV> <DIV>Thank you very much for your response.</DIV> <DIV></DIV> <DIV>I am doing something on image processing. In this project, the image size is 4096X4096 or above, I have to perform the FFTs of 4-6 images andpeferform some operations among them, so, sometimes, the result became overflow. If in double type, no overflow,<EM> </EM>I think.</DIV> <DIV></DIV> <DIV>(I have tried to divide a constant after FFT, but it is possible to lose accuracy, is not it?).</DIV> <DIV></DIV> <DIV>Best reagrads,</DIV> <DIV>Li</DIV> Thu, 08 Jan 2004 14:15:39 GMT https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976149#M21012 junli 2004-01-08T14:15:39Z https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976150#M21013 <DIV>I'm afraid you will get mem overflow having several images 4Kx4K of double</DIV> Sat, 31 Jan 2004 20:50:40 GMT https://community.intel.com/t5/Intel-Integrated-Performance/FFT2-has-double-version/m-p/976150#M21013 borix 2004-01-31T20:50:40Z