| 48 | } |
| 49 | |
| 50 | U32 xMathSolveQuadratic(F32 a, F32 b, F32 c, F32* x1, F32* x2) |
| 51 | { |
| 52 | F32 d; |
| 53 | F32 dx; |
| 54 | F32 p; |
| 55 | |
| 56 | if (a == 0.0f) |
| 57 | { |
| 58 | if (b == 0.0f) |
| 59 | { |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | *x1 = -c / b; |
| 64 | return 1; |
| 65 | } |
| 66 | |
| 67 | d = b * b - (4.0f * a * c); |
| 68 | |
| 69 | if (d < 0.0f) |
| 70 | { |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | dx = 1.0f / (2.0f * a); |
| 75 | |
| 76 | *x1 = -b * dx; |
| 77 | |
| 78 | if (d == 0.0f) |
| 79 | { |
| 80 | return 1; |
| 81 | } |
| 82 | |
| 83 | *x2 = *x1; |
| 84 | |
| 85 | p = dx * xsqrt(d); |
| 86 | |
| 87 | if (a > 0.0f) |
| 88 | { |
| 89 | *x1 -= p; |
| 90 | *x2 += p; |
| 91 | } |
| 92 | else |
| 93 | { |
| 94 | *x1 += p; |
| 95 | *x2 -= p; |
| 96 | } |
| 97 | |
| 98 | return 2; |
| 99 | } |
| 100 | |
| 101 | U32 xMathSolveCubic(F32 a, F32 b, F32 c, F32 d, F32* x1, F32* x2, F32* x3) |
| 102 | { |
no test coverage detected