TMtx.Trunc Method

Overload List

#	Signature	Description
1	TMtxVec Trunc	Rounds a real number towards zero.
	└ indexed: TMtxVec Trunc(Int32 Index, Int32 Len)
2	TMtxVec Trunc(TMtxVec Src)	Truncate all Src object elements.
	└ indexed: TMtxVec Trunc(TMtxVec Src, Int32 SrcIndex, Int32 Index, Int32 Len)
3	TMtxVec Trunc(ref Int32[] Dst)	Truncate all calling object elements.

Overload 1: TMtxVec Trunc

Rounds a real number towards zero.

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

Remarks:

Rounds all calling object elements towards zero to an integer and stores the result in the calling object again as floating point numbers.

Examples

Matrix a = new Matrix();
a.SetIt(2, 2, false, new double[] { 1.2, 2.7, -0.5, 3.9 });
a.Trunc();
Matrix expected = new Matrix();
expected.SetIt(2, 2, false, new double[] { 1.0, 2.0, -0.0, 3.0 });
if (!a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute))
    throw new Exception("Matrix.Trunc: mismatch");

Indexed: TMtxVec Trunc(Int32 Index, Int32 Len)

Truncate 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/underrun.

Overload 2: TMtxVec Trunc(TMtxVec Src)

Truncate all Src object elements.

#	Name	Type	Description
1	Src	TMtxVec	source TVec or TMtx

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

Remarks:

Store the results in calling object elements. Size and Dew.Math.TMtxVec.Complex property of calling object are adjusted automatically.

Examples

Matrix a = new Matrix();
a.SetIt(2, 2, false, new double[] { 1.2, 2.7, -0.5, 3.9 });
a.Trunc();
Matrix expected = new Matrix();
expected.SetIt(2, 2, false, new double[] { 1.0, 2.0, -0.0, 3.0 });
if (!a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute))
    throw new Exception("Matrix.Trunc: mismatch");

Indexed: TMtxVec Trunc(TMtxVec Src, Int32 SrcIndex, Int32 Index, Int32 Len)

Truncate Src object elements [SrcIndex]..[SrcIndex+Len-1].

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

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

Remarks:

Store the results to calling object elemenents [Index]..[Index+Len-1]. Size and Dew.Math.TMtxVec.Complex property of calling object must be set explicitly to match those of Src object. An exception is raised if array borders are overrun/underrun.

Overload 3: TMtxVec Trunc(ref Int32[] Dst)

Truncate all calling object elements.

#	Name	Type	Description
1	Dst	Int32[] (ref)

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

Remarks:

Store the result in the Dst integer array. Length of the array is automatically adjusted. If the calling object is Complex, the length of the Dst array is equal to 2*Dew.Math.TMtxVecBase.Length.

Examples

Matrix a = new Matrix();
a.SetIt(2, 2, false, new double[] { 1.2, 2.7, -0.5, 3.9 });
a.Trunc();
Matrix expected = new Matrix();
expected.SetIt(2, 2, false, new double[] { 1.0, 2.0, -0.0, 3.0 });
if (!a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute))
    throw new Exception("Matrix.Trunc: mismatch");