Matrix.Cos Method

Overload List

#	Signature	Description
1	TMtxVec Cos	Cosine.
	└ indexed: TMtxVec Cos(Int32 Index, Int32 Len)
2	TMtxVec Cos(TMtxVec X)	Calculate the cosine of all X object elements and store the results in the calling object.
	└ indexed: TMtxVec Cos(TMtxVec X, Int32 XIndex, Int32 Index, Int32 Len)

Overload 1: TMtxVec Cos

Cosine.

Result: stored in self (calling object), returns self for chaining

Remarks:

Calculate the cosine of all caling object elements in-place.

Examples

Matrix a = new Matrix();
a.SetIt(2, 2, false, new double[] { 0.0, 0.523598775598299, 0.785398163397448, 1.0471975511966 });
a.Cos();
Matrix expected = new Matrix();
expected.SetIt(2, 2, false, new double[] { 1.0, 0.866025403784439, 0.707106781186548, 0.5 });
if (!a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute))
    throw new Exception("Matrix.Cos: mismatch");

Matrix a;
a.SetIt(1,2,true,new double[] {1,-2,3,4});
a.Cos; // Computes complex sine

See Also: Matrix.ArcCos, Matrix.SinCos

Indexed: TMtxVec Cos(Int32 Index, Int32 Len)

Calculate the cosine of calling object elements [Index]...[Index+Len-1] in-place.

#	Name	Type	Description
1	Index	Int32	start index
2	Len	Int32	element count

Result: stored in self (calling object), returns self for chaining

Remarks:

An exception is raised if array borders are overrun.

Overload 2: TMtxVec Cos(TMtxVec X)

Calculate the cosine of all X object elements and store the results in the calling object.

#	Name	Type	Description
1	X	TMtxVec	source TVec or TMtx

Result: stored in self (calling object), returns self for chaining

Remarks:

Size and Dew.Math.Matrix.Complex properties of calling object are adjusted automatically.

Examples

Matrix a = new Matrix();
Matrix x = new Matrix();
x.SetIt(2, 2, false, new double[] { 0.0, 0.523598775598299, 0.785398163397448, 1.0471975511966 });
a.Cos(x);
Matrix expected = new Matrix();
expected.SetIt(2, 2, false, new double[] { 1.0, 0.866025403784439, 0.707106781186548, 0.5 });
if (!a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute))
    throw new Exception("Matrix.Cos: mismatch");

Indexed: TMtxVec Cos(TMtxVec X, Int32 XIndex, Int32 Index, Int32 Len)

Calculate the cosine of X object elements [XIndex]...[XIndex+Len-1]. The results are stored in calling object elements [Index]...[Index+Len-1].

#	Name	Type	Description
1	X	TMtxVec	source TVec or TMtx
2	XIndex	Int32	X start index
3	Index	Int32	start index
4	Len	Int32	element count

Result: stored in self (calling object), returns self for chaining

Remarks:

Size and Dew.Math.Matrix.Complex properties of calling object and the calling object must be set explicitly. An exception is raised if array borders are overrun.