NRF_DSP_RFFT_TWIDDLE_COEF_32_F32

const flt32_t NRF_DSP_RFFT_TWIDDLE_COEF_32_F32[32]

Initial value:

= {
    0.000000000f, 1.000000000f,  0.195090322f, 0.980785280f,  0.382683432f, 0.923879533f,
    0.555570233f, 0.831469612f,  0.707106781f, 0.707106781f,  0.831469612f, 0.555570233f,
    0.923879533f, 0.382683432f,  0.980785280f, 0.195090322f,  1.000000000f, 0.000000000f,
    0.980785280f, -0.195090322f, 0.923879533f, -0.382683432f, 0.831469612f, -0.555570233f,
    0.707106781f, -0.707106781f, 0.555570233f, -0.831469612f, 0.382683432f, -0.923879533f,
    0.195090322f, -0.980785280f
}

Example code for Floating-point RFFT Twiddle factors Generation:

TW = exp(pi/2*i-2*pi*i*[0:L/2-1]/L).' 

Real and Imag values are in interleaved fashion