ILMathpoly Method (InArrayDouble, InArrayDouble)

ILNumerics Ultimate VS Documentation

ILNumerics - Technical Application Development

Polynomial evaluation

[ILNumerics Computing Engine]

Namespace: ILNumerics
Assembly: ILNumerics.Computing (in ILNumerics.Computing.dll) Version: 5.5.0.0 (5.5.7503.3146)

Syntax

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public static RetArray<double> poly(
	InArray<double> c,
	InArray<double> x
)

Public Shared Function poly ( 
	c As InArray(Of Double),
	x As InArray(Of Double)
) As RetArray(Of Double)

Dim c As InArray(Of Double)
Dim x As InArray(Of Double)
Dim returnValue As RetArray(Of Double)

returnValue = ILMath.poly(c, x)

Parameters

c: Type: ILNumericsInArrayDouble
Vector of coefficients of the polynomial
x: Type: ILNumericsInArrayDouble
Position where the polynomial is to be evaluated. The position may be either a scalar, a vector or a matrix.

Return Value

Type: RetArrayDouble
The value of a polynomial of degree d at position x, with d=c.lenght-1

Remarks

If the input position is an array, the evaluation will be done elementwise

[ILNumerics Computing Engine]

Examples

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//Evaluation of the polynomial 1+x+2.1 x + x^2+3x^3 at (1,1,1)
Array<double> y = ILMath.poly(ILMath.array<double>(1.0, 2.1, 1.0, 3.0), ILMath.ones<double>(3, 1));

Reference

ILMath Class

poly Overload

ILNumerics Namespace