Function solve_cubic

pub fn solve_cubic(
    coeffs: &impl ToInputArray,
    roots: &mut impl ToOutputArray,
) -> Result<i32>

Finds the real roots of a cubic equation.

The function solveCubic finds the real roots of a cubic equation:

• if coeffs is a 4-element vector:
• if coeffs is a 3-element vector:

The roots are stored in the roots array.

Parameters

• coeffs: equation coefficients, an array of 3 or 4 elements.
• roots: output array of real roots that has 1 or 3 elements.

Returns

number of real roots. It can be 0, 1 or 2.