Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.10
  • 10/21/2020
  • Public Content
Contents

Building an Application With FFTW3 Interface Wrappers

Normally, the only change needed to build your application with FFTW3 wrappers replacing original FFTW library is to add
Intel® oneAPI Math Kernel Library
 at the link stage (see section
"Linking Your Application with
Intel® oneAPI
 Math Kernel Library
" in the
Intel® oneAPI Math Kernel Library
 Developer Guide
).
If you recompile your application, add subdirectory
include\fftw
 to the search path for header files to avoid FFTW3 version conflicts.
Sometimes, you may have to modify your application according to the following recommendations:
  • The application requires
    #include "fftw3.h"
     ,
    which it probably already includes.
  • The application does not require
    #include "mkl_dfti.h" .
  • The application does not require
    #include "fftw3_mkl.h"
     .
    It is required only in case you want to use the
    MKL_RODFT00
     constant.
  • If the application does not check whether a
    NULL
    plan is returned by plan creation functions, this check must be added, because the FFTW3 to
    Intel® oneAPI Math Kernel Library
     wrappers do not provide 100% of FFTW3 functionality.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804