Intel® oneAPI Math Kernel Library Developer Reference - C
Frees the memory allocated for a descriptor.
status = DftiFreeDescriptor(&desc_handle);
Name |
Type |
Description |
|---|---|---|
desc_handle |
DFTI_DESCRIPTOR_HANDLE |
FFT descriptor. |
Name |
Type |
Description |
|---|---|---|
desc_handle |
DFTI_DESCRIPTOR_HANDLE |
Memory for the FFT descriptor is released. |
status |
MKL_LONG |
Function completion status. |
This function frees all memory allocated for a descriptor.
Memory allocation/deallocation inside Intel® oneAPI Math Kernel Library is managed by Intel® oneAPI Math Kernel Library memory management software. So, even after successful completion ofFreeDescriptor, the memory space may continue being allocated for the application because the memory management software sometimes does not return the memory space to the OS, but considers the space free and can reuse it for future memory allocation. See Example mkl_free_buffers: Usage with FFT Functionson how to use Intel® oneAPI Math Kernel Library memory management software and release memory to the OS.
The function returns zero when it completes successfully. See Status Checking Functions for more information on the returned status.
MKL_LONG DftiFreeDescriptor( DFTI_DESCRIPTOR_HANDLE * );