FC_Poly4Zeros

 

FC_Poly4Zeros - General Information

Overview

Type:

Function

Available as of:

V1.0.3.0

Versions:

Current version

Task

Solutions of the 4nd order equation

G-SE-0068642.1.gif-high.gif

 

 

Description

The solutions are complex numbers which are returned in a structure of type ST_PolynomialZeros.

Interface

Input

Data type

Description

i_lrA

LREAL

Factor for X4

i_lrB

LREAL

Factor for X3

i_lrC

LREAL

Factor for X2

i_lrD

LREAL

Factor for X

i_lrE

LREAL

Constant term

Output

Data type

Description

q_etDiag

GD.ET_Diag

General library-independent statement on the diagnostic.

A value not equal to ET_Diag.Ok corresponds to an diagnostic message.

q_etDiagExt

ET_DiagExt

POU-specific output on the diagnostic.

q_etDiag = ET_Diag.Ok -> Status message

q_etDiag <> ET_Diag.Ok -> Diagnostic message

Return Value

Data type

Description

ST_PolynomialZeros

Zeros of the function

Diagnostic Messages

q_etDiag

q_etDiagExt

Enumeration value

Description

OK

Ok

0

Ok

Ok

Enumeration name:

Ok

Enumeration value:

0

Description:

Ok

The zeros have been calculated successfully.