Example how to use SealBase Log  

First step is to instrument the code using the LOG macro. If #NLOG compilation flag is not enabled, #LOG() expands to code that will dump the output to the logging device.

Usage:

        LOG ( level, what , mode, expression)

• level: the level at and beyond which this output should be dumped. Zero is the lowest level, and -1 is interpreted as "always".
  

• what: indicates the type of dump. The value should be either trace, error or warning.

• mode: debugging mode flag. This indicates the context in which this output was written. It can be one of the #logflag modes (usually starting with @c LF), e.g., @c LFgeneral.

• expression: the expression to dump. It should be in the standard stream insertion format; the first left shift operator is supplied by the macro.
  

When you run the program you can define where to send the log messages by setting the LOG environment variable.
For example:

• export LOG=stderr                                # for sending output to standard error
• export LOG=file:/tmp/myFile.log        # to send output to a file