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Tag: fftw_malloc

3D PRINTING ACOUSTICS & DSP DATA MANAGEMENT FFT & WAVELETS

c++ – Allocate 3D Array for FFTW using fftw_malloc

November 24, 2021admin

I am currently trying to improve the performance of my multithreaded FFTW implementation. In the documentation of fftw3 I read that for best-possible performance, the fftw_malloc function should be used…Read morec++ – Allocate 3D Array for FFTW using fftw_malloc

3D PRINTING ACOUSTICS & DSP DATA MANAGEMENT FFT & WAVELETS

c – Why does FFTW use ptrdiff_t (instead of e.g. size_t) for sizes?

September 17, 2021September 17, 2021admin

The FFTW library uses the C type ptrdiff_t in its interface to specify large array sizes, in particular in its “64-bit guru interface”: fftw_plan fftw_plan_guru64_dft( int rank, const fftw_iodim64 *dims,…Read morec – Why does FFTW use ptrdiff_t (instead of e.g. size_t) for sizes?

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