parameters: (t)
return_statement: return t.id == lib.Type_DECIMAL128
docstring: Return True if value is an instance of a decimal type.
  
      Parameters
      ----------
      t : DataType
docstring_summary: Return True if value is an instance of a decimal type.
docstring_tokens: Return True if value is an instance of a decimal type .
function: def is_decimal128(t):
      """
      Return True if value is an instance of a decimal type.
  
      Parameters
      ----------
      t : DataType
      """
      return t.id == lib.Type_DECIMAL128
function_tokens: def is_decimal128 ( t ) : return t . id == lib . Type_DECIMAL128