clVector.Sign Method

clVector Class

Overload List

#SignatureDescription
1function Sign: TOpenCLMtxVec;Changes elements sign.
└ indexed: function Sign(Index: Integer; Len: Integer): TOpenCLMtxVec;
2function Sign(const X: TOpenCLMtxVec): TOpenCLMtxVec;Change all X object elements sign.
└ indexed: function Sign(const X: TOpenCLMtxVec; XIndex: Integer; Index: Integer; Len: Integer): TOpenCLMtxVec;

Overload 1: function Sign: TOpenCLMtxVec;

Changes elements sign.

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

Remarks:

Changes all calling object elements sign (v -> -v) in-place.

Examples
var a: clVector;
begin
    a.CopyFromArray(TSingleArray.Create(1,2,-3,4));
    a.Sign; // a = [-1,-2,3,-4]
end;
See Also: clVector.Mul

Indexed: function Sign(Index: Integer; Len: Integer): TOpenCLMtxVec;

Change calling object elements [Index]..[Index+Len-1] sign in-place.

#NameTypeDescription
1IndexIntegerstart index
2LenIntegerelement count

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

Remarks:

An exception is raised if array borders are overrun or underrun.

Overload 2: function Sign(const X: TOpenCLMtxVec): TOpenCLMtxVec;

Change all X object elements sign.

#NameTypeDescription
1XTOpenCLMtxVec

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

Remarks:

Store the results in calling object. Size and clVector.Complex properties of calling object are adjusted automatically.

Indexed: function Sign(const X: TOpenCLMtxVec; XIndex: Integer; Index: Integer; Len: Integer): TOpenCLMtxVec;

Change X object elements [XIndex]..[XIndex+Len-1] sign.

#NameTypeDescription
1XTOpenCLMtxVec
2XIndexIntegerX start index
3IndexIntegerstart index
4LenIntegerelement count

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

Remarks:

Store the results in callingobject elements [Index]..[Index+Len-1]. An exception is raised if array borders are overrun or underrun.