Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content
Contents

DFTI_PLACEMENT

By default, the computational functions overwrite the input data with the output result. That is, the default setting of the configuration parameter
DFTI_PLACEMENT
 is
DFTI_INPLACE
. You can change that by setting it to
DFTI_NOT_INPLACE
.
When the configuration parameter is set to
DFTI_NOT_INPLACE
, the input and output data sets must have no common elements.
To better understand the use of the
DFTI_PLACEMENT
configuration parameter, see this example in your
Intel® oneAPI Math Kernel Library
 directory:
./examples/dftc/source/config_placement.c

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