Thread: Pre-generated sin array

Hi Guys,
I am hoping it would be obvious to someone how this sin table was generated.
This is from a retro plasma demo, and is running fine on a dsPic so fast now
that I have to delay it. I thought it would be good to either declare the array, and then populate it (saving some program memory),
or better still, loose the array altogether and calculate it on the fly.
Any help would be appreciated.
Cheers, Art.

Code:

WORD sin_table[91] =
{
    0,   285,   571,   857,  1142,  1427,  1712,  1996,  2280,  2563,
    2845,  3126,  3406,  3685,  3963,  4240,  4516,  4790,  5062,  5334,
    5603,  5871,  6137,  6401,  6663,  6924,  7182,  7438,  7691,  7943,
    8191,  8438,  8682,  8923,  9161,  9397,  9630,  9860, 10086, 10310,
    10531, 10748, 10963, 11173, 11381, 11585, 11785, 11982, 12175, 12365,
    12550, 12732, 12910, 13084, 13254, 13420, 13582, 13740, 13894, 14043,
    14188, 14329, 14466, 14598, 14725, 14848, 14967, 15081, 15190, 15295,
    15395, 15491, 15582, 15668, 15749, 15825, 15897, 15964, 16025, 16082,
    16135, 16182, 16224, 16261, 16294, 16321, 16344, 16361, 16374, 16381,
    16384
};

Ok, I will try it, thanks