TMtxVec.Ln Methods

Summary

Natural logarithm.

Declaration

Function Ln(X: TMtxVec): TMtxVec;

Description

Calculate the natural algorithm for all X elements and store the results in the calling object. Size and Complex properties of the calling vector are set implicitly to match the X object.

Declaration

Function Ln(Index, Len: integer): TMtxVec;

Description

Calculate the natural logarithm for calling object elements [Index]..[Index+Len-1] in-place. An exception is raised if ConditionCheck is True and array borders are overrun.

Declaration

Function Ln(X: TMtxVec; XIndex, Index, Len: integer): TMtxVec;

Description

Calculate the natural logarithm for X elements [XIndex]..[XIndex+Len-1] and store the results in the calling object elements [Index]..[Index+Len-1]. Size and Complex properties of the calling object must be set explicitly. An exception is raised if ConditionCheck is True and array borders are overrun.

Declaration

Function Ln: TMtxVec;

Description

Calculate the natural log for all calling object elements in-place.

See Also
Exp

Example 1

      var a: TVec;
      begin
        CreateIt(a);
        try
          a.SetIt(False,[1,2,3,4]);
          a.Ln;
        finally
          FreeIt(a);
        end;
      end;