Kutalmis Bercin 8ca724fffa ENH: improve stability in polynomialEqns ...

- replaces floating-point equal comparisons in
    `linearEqn`, `quadraticEqn`, and `cubicEqn`,
  - ensures `quadraticEqn` and `cubicEqn` can return `complex` roots,
  - reorders if-branches in `quadraticEqn` and `cubicEqn` to avoid
    zero-equal comparison,
  - adds Kahan's cancellation-avoiding algorithm into `quadraticEqn` and
    `cubicEqn` for the numerically-sensitive discriminant computation,

  - adds/improves `polynomialEqns` tests:
    * adds Test-linearEqn.C
    * adds Test-quadraticEqn.C
    * improves Test-cubicEqn.C

2020-02-18 12:21:01 +00:00

..

cubicEqn

ENH: improve stability in polynomialEqns

2020-02-18 12:21:01 +00:00

linearEqn

ENH: improve stability in polynomialEqns

2020-02-18 12:21:01 +00:00

quadraticEqn

ENH: improve stability in polynomialEqns

2020-02-18 12:21:01 +00:00