LinearAlgebraOperationsExtensions.MultiplyInPlace Method

Definition

Namespace: Numerics.NET.Collections
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.2

Overload List

MultiplyInPlace<T>(ILinearAlgebraOperations<T>, Int32, T, SpanSlice<T>)

Scales a vector by a constant.

C# 
public static void MultiplyInPlace<T>(
	this ILinearAlgebraOperations<T> operations,
	int n,
	T a,
	SpanSlice<T> x
)

Parameters

operations  ILinearAlgebraOperations<T>
 
n  Int32
 
a  T
 
x  SpanSlice<T>
 

Type Parameters

T

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

            uses unrolled loops for increment equal to one.

Further Details:

            jack dongarra, linpack, 3/11/78.
            modified 3/93 to return if incx .le. 0.
            modified 12/3/93, array(1) declarations changed to array(*)

Authors: Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver, NAG Ltd.

Date: November 2011

MultiplyInPlace<T, TStorage>(ILinearAlgebraOperations<T>, Int32, T, TStorage)

Evaluates the product of a scalar and a vector.
C# 
public static void MultiplyInPlace<T, TStorage>(
	this ILinearAlgebraOperations<T> operations,
	int n,
	T alpha,
	TStorage x
)
where TStorage : Object, IStorageSlice<T>

Parameters

operations  ILinearAlgebraOperations<T>
The linear algebra operations instance used to perform the calculation.
n  Int32
The number of elements in the vector x.
alpha  T
The scalar value used to multiply the elements of x.
x  TStorage
A reference to a one-dimensional array containing the elements of the vector x. The elements of x are overwritten with the result.

Type Parameters

T
TStorage

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

See Also