Struct cmsis_dsp_sys_pregenerated::arm_cfft_radix4_instance_f32

#[repr(C)]pub struct arm_cfft_radix4_instance_f32 {
    pub fftLen: u16,
    pub ifftFlag: u8,
    pub bitReverseFlag: u8,
    pub pTwiddle: *const float32_t,
    pub pBitRevTable: *const u16,
    pub twidCoefModifier: u16,
    pub bitRevFactor: u16,
    pub onebyfftLen: float32_t,
}

@brief Instance structure for the floating-point CFFT/CIFFT function.

Fields

fftLen: u16

< length of the FFT.

ifftFlag: u8

< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.

bitReverseFlag: u8

< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.

pTwiddle: *const float32_t

< points to the Twiddle factor table.

pBitRevTable: *const u16

< points to the bit reversal table.

twidCoefModifier: u16

< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.

bitRevFactor: u16

< bit reversal modifier that supports different size FFTs with the same bit reversal table.

onebyfftLen: float32_t

< value of 1/fftLen.