Struct CfftI16 

pub struct CfftI16 {
    pub n_fft: usize,
    pub ifft_flag: bool,
    pub bit_reverse_flag: bool,
    pub twiddle: &'static [u16],
    pub bit_rev_table: &'static [u16],
}

Input and Output formats for CFFT Q15

CFFT Size	Input Format	Output Format	Number of bits to upscale
16	1.15	5.11	4
64	1.15	7.9	6
256	1.15	9.7	8
1024	1.15	11.5	10

Input and Output formats for CIFFT Q15

CIFFT Size	Input Format	Output Format	Number of bits to upscale
16	1.15	5.11	0
64	1.15	7.9	0
256	1.15	9.7	0
1024	1.15	11.5	0

Fields

n_fft: usize

ifft_flag: bool

bit_reverse_flag: bool

twiddle: &'static [u16]

bit_rev_table: &'static [u16]

Implementations

impl CfftI16

pub const fn new(n_fft: usize, ifft_flag: bool, bit_reverse_flag: bool) -> Self

pub fn run(&self, data: &mut [i16])

Q15 CFFT/CIFFT entry compatible with CMSIS arm_cfft_q15 dispatch behavior.