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code for implementing trigonometric calculation

(sam s over 13 years ago

HI Can anyone help me to implement trigonometric function in lpc2148 ?

Thanks

Parents

0 Konrad Bamford over 13 years ago in reply to Konrad Bamford

actually

//*****************************************************/
// Fast arctan2 software implementation
//*****************************************************/
//float SW_atan(float q, float i)
//{
//    float angle, abs_q, r;
//
//    abs_q = fabs(q) + 1e-10;      // kludge to prevent 0/0 condition
//    if (i >= 0)
//    {
//        r = (i - abs_q) / (i + abs_q);
//        angle = 0.1963f * r * r * r - 0.9817f * r + 0.7853982f;
//    }
//    else
//    {
//        r = (i + abs_q) / (abs_q - i);
//        angle = 0.1963f * r * r * r - 0.9817f * r + 2.3561945f;
//    }
//    if (q < 0) angle *= -1;
//
//    return angle;
//}
//*****************************************************/

Reply

0 Konrad Bamford over 13 years ago in reply to Konrad Bamford

actually

//*****************************************************/
// Fast arctan2 software implementation
//*****************************************************/
//float SW_atan(float q, float i)
//{
//    float angle, abs_q, r;
//
//    abs_q = fabs(q) + 1e-10;      // kludge to prevent 0/0 condition
//    if (i >= 0)
//    {
//        r = (i - abs_q) / (i + abs_q);
//        angle = 0.1963f * r * r * r - 0.9817f * r + 0.7853982f;
//    }
//    else
//    {
//        r = (i + abs_q) / (abs_q - i);
//        angle = 0.1963f * r * r * r - 0.9817f * r + 2.3561945f;
//    }
//    if (q < 0) angle *= -1;
//
//    return angle;
//}
//*****************************************************/

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