The examples in the examples subdirectory can be used to test the code once it has been installed. For unix systems, the routine Verify can be used to run all of the examples and compare results with those in Stdout . The output from Verify will be in the file testruns.out . Any differences are in the output from diff. It is common to have differences in items such as source positions in the last significant figure.
Different machines handle rounding differently.
Such differences can be ignored. Any more serious differences are cause for concern. You must have version 5.2 or later. Note that vaxms has not been exercised in a very long time. Some non-standard features, including long variable names, remain in the program after processing with vaxms .