topic please show the output in Intel® oneAPI Math Kernel Library

The Discrete Hartly Transform can not get the right computing result in Windows system

xi_l_ — Sat, 21 Jul 2018 03:27:10 GMT

Hi,

I have a program needs using fftw in MKL and I can get the right result in Linux edition. But when I compiled it in Windows edition, I got a absolutely wrong answer. So I wrote a simple program to test fftw and I found the computing result of FFTW_DHT(The Discrete Hartly Transform) would be all zeros. I complied this program with Visual Studio 2015 and Fortran compiler 2018.The simple program has been attached and I want to know how to solve it.

Best wishes！

please show the output

Gennady_F_Intel — Sat, 21 Jul 2018 04:18:30 GMT

please show the output results you obtained on lin and win. How did you link this case?

Hi Gennady,

xi_l_ — Sat, 21 Jul 2018 04:53:35 GMT

Hi Gennady,

I wrote a simple program to test FFTW_DHT and compiled it both on Lin and Win. The input data is /1.0 2.0 3.0 4.0/.
The output on linux is:
10.0 -4.0 -2.0 0.0
The output on Windows is:
0.0 0.0 0.0 0.0
The output on Linux is the right answer. I don't know why I will get all zeros on Windows.

By the way,I can get right

xi_l_ — Sat, 21 Jul 2018 05:08:35 GMT

By the way,I can get right answer if I use FFTW_REDFT01 or FFTW_Redft10 on Windows.