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FFT4

Fast Fourier Transform with four samples.

Syntax

Parameters

pReal   _Inout_updates_(uCount)
Type: XMVECTOR* __restrict
Real components of the FFT. Must have at least uCount elements. pImaginary   _Inout_updates_(uCount)
Type: XMVECTOR* __restrict
Imaginary components of the FFT. Must have at least uCount elements. uCount   _In_
Type: size_t
Number of FFT iterations.

Return value

Type: void None.

Remarks

For FFTs with a number of samples that are less than or equal to 16, use FFT16, FFT8, or FFT4. All buffer parameters must be 16-byte aligned. Audio data must be FLOAT32 mono.

Requirements

Header: xdsp.h Supported platforms: XBOX One family consoles and XBOX Series consoles

See also

xdsp
Last modified on August 20, 2026