| /branches/V0.68d Code Redesign killagreg/mymath.c |
|---|
| 77,3 → 77,23 |
| else return (angle - 180); // ( (x < 0) && (y < 0)) 3rd quadrant |
| } |
| // integer square root |
| uint32_t c_sqrt(uint32_t number) |
| { |
| uint32_t s1, s2; |
| uint8_t iter = 0; |
| // initialization of iteration |
| s2 = number; |
| do // iterative formula to solve x^2 - n = 0 |
| { |
| s1 = s2; |
| s2 = number / s1; |
| s2 += s1; |
| s2 /= 2; |
| iter++; |
| //if(iter > 40) break; |
| }while( ( (s1-s2) > 1) && (iter < 40)); |
| return s2; |
| } |