diff options
Diffstat (limited to 'src/core/General.h')
| -rw-r--r-- | src/core/General.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/core/General.h b/src/core/General.h index dde43c0f..7ab444a4 100644 --- a/src/core/General.h +++ b/src/core/General.h @@ -134,6 +134,18 @@ public: return *str2 != '\0'; } + static bool SolveQuadratic(float a, float b, float c, float &root1, float &root2) + { + float discriminant = b * b - 4.f * a * c; + if (discriminant < 0.f) + return false; + + float discriminantSqrt = Sqrt(discriminant); + root2 = (-b + discriminantSqrt) / (2.f * a); + root1 = (-b - discriminantSqrt) / (2.f * a); + return true; + } + // not too sure about all these... static uint16 GetRandomNumber(void) { return myrand() & MYRAND_MAX; } @@ -145,4 +157,6 @@ public: static int32 GetRandomNumberInRange(int32 low, int32 high) { return low + (high - low)*(GetRandomNumber()/float(MYRAND_MAX + 1)); } + static void SetRandomSeed(int32 seed) + { mysrand(seed); } }; |