MATH.CalcRootParable (FB)

(CAA_Mathematics.library)

By use of this function block the roots of a quadratic function (with ), if there are some, are calculated.

Input:

lrParam2	LREAL	multiplier of (corresponds to )
lrParam1	LREAL	multiplier of (corresponds to )
lrParam0	LREAL	multiplier of (corresponds to )

Output:

byRoots	BYTE	number of roots (0, 1, 2 or 255 (in case of infinite number of roots))
lrRoot0	LREAL	first root (initialized with 0)
lrRoot1	LREAL	second root (initialized with 0)