Matrix.Floor Method

Overload List

#	Signature	Description
1	function Floor: TMtxVec;	Rounds towards negative infinity.
	└ indexed: function Floor(Index: Integer; Len: Integer): TMtxVec;
2	function Floor(const Src: TMtxVec): TMtxVec;	Rounds all Src object elements towards negative infinity and stores the result in the calling object.
	└ indexed: function Floor(const Src: TMtxVec; SrcIndex: Integer; Index: Integer; Len: Integer): TMtxVec;

Overload 1: function Floor: TMtxVec;

Rounds towards negative infinity.

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

Remarks:

Rounds all calling object elements towards negative infinity in-place.

Floor(-2.8) = -3
Floor(2.8) = 2
Floor(-1.0) = -1

Examples

var
    a, expected: Matrix;
begin
    a := [[1.2, 2.7], [-0.5, 3.9]];
    a.Floor;
    expected := [[1.0, 2.0], [-1.0, 3.0]];
    if not a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute) then
        raise Exception.Create('Matrix.Floor: mismatch');
end;

Indexed: function Floor(Index: Integer; Len: Integer): TMtxVec;

Rounds calling object elements [Index]..[Index+Len-1] towards negative infinity in-place.

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

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

Remarks:

An exception is raised if array borders are overrun.

Overload 2: function Floor(const Src: TMtxVec): TMtxVec;

Rounds all Src object elements towards negative infinity and stores the result in the calling object.

#	Name	Type	Description
1	Src	TMtxVec

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

Remarks:

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

Examples

var
    a, x, expected: Matrix;
begin
    x := [[1.2, 2.7], [-0.5, 3.9]];
    a.Floor(x);
    expected := [[1.0, 2.0], [-1.0, 3.0]];
    if not a.IsEqual(expected, 1e-10, TCompare.cmpAbsolute) then
        raise Exception.Create('Matrix.Floor: mismatch');
end;

Indexed: function Floor(const Src: TMtxVec; SrcIndex: Integer; Index: Integer; Len: Integer): TMtxVec;

Rounds Src object elements [SrcIndex]..[SrcIndex+Len-1] towards negative infinity.

#	Name	Type	Description
1	Src	TMtxVec
2	SrcIndex	Integer	source start index
3	Index	Integer	start index
4	Len	Integer	element count

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

Remarks:

Sores the result in the calling object elements [Index]..[Index+Len-1] Size and Matrix.Complex properties of the calling object must be set explicitly. An exception is raised if array borders are overrun.