These are the global variables that brought about by RTensor:

• $TType specifies the default tensor type for Tnsr. It can be set to one of the members of Tsr::TTypeSet. Its default value is :object, which represents Ruby objects.

• $TsrType specifies the default tensor type for Tensor. It can be set to one of the members of Tsr::TsrTypeSet. Its default value is :number, which represents double-precision floating-point numbers.

• $RowOrder is a boolean value that specifies whether the internal representation of tensor is based on Row Order (when it is true) or Column Order (when it is false). Its default value is false, just like in Matlab or Fortran.

• $IdxOfs specifies the offset for element indices. Usually it is either 0 or 1. Its default value is 1, just like in Matlab or Octave.

• $PageCol specifies the maximum width of the print-out page given in columns. Its default value is 80.

• $ElmCol specifies the maximum width of the print-out element given in columns. Its default value is 29.

• $MtrxRow specifies the maximum number of rows of the print-out tensor for each sub-matrix. Its default value is 20.