% The multiplicative constants for the 19 point FFT

I = sqrt(-1);
u = [
       -1.055555555555556
        0.242161052418926*I
        0.798693520987127
        0.177211053261099
       -0.325301524749409
       -0.834854293606883*I
       -0.488430732011460*I
        0.441095008539447*I
        0.435557826755211
        0.231321070206014
       -0.421744310987423
       -0.002942234699835
        0.822164874728519
       -1.524433450111895
       -0.208976399520928
        0.861151390434984
        0.242730955603080
       -3.304023490019812
        0.362958541118895
       -0.007448223561695
       -0.146469026482520
       -0.079929573634415
        0.827286205097097
        0.490936114006330*I
        0.364666773063770*I
       -0.318086136404994*I
       -0.314562985092245*I
        5.737605861191472*I
        1.814966178076640*I
       -0.151292354260379*I
        0.313346892339940*I
       -0.143269744887002*I
        2.935067055771071*I
       -0.768634097360990*I
       -0.071124806267797*I
        0.001579748021685*I
        0.152610909993082*I
       -2.890890972320848*I
];


% The input permutation for the 19 point FFT

ip = [
   1
   2
   18
   5
   12
   17
   7
   8
   6
   10
   19
   3
   16
   9
   4
   14
   13
   15
   11
];


% The output permutation for the 19 point FFT

op = [
   1
   19
   2
   5
   12
   17
   15
   16
   4
   18
   9
   13
   7
   6
   8
   3
   14
   11
   10
];