optionMemberList(3) Programmer's Manual optionMemberList(3)

optionMemberList - Get the list of members of a bit mask set

#include <your-opts.h>
cc [...] -o outfile infile.c -lopts [...]

char * optionMemberList(tOptDesc * od);

This converts the OPT_VALUE_name mask value to a allocated string. It is the caller's responsibility to free the string.
the set membership option description

the names of the set bits

The info documentation for the -lopts library.
ao_string_tokenize(3), configFileLoad(3), optionFileLoad(3), optionFindNextValue(3), optionFindValue(3), optionFree(3), optionGetValue(3), optionLoadLine(3), optionNextValue(3), optionOnlyUsage(3), optionPrintVersion(3), optionPrintVersionAndReturn(3), optionProcess(3), optionRestore(3), optionSaveFile(3), optionSaveState(3), optionUnloadNested(3), optionVersion(3), strequate(3), streqvcmp(3), streqvmap(3), strneqvcmp(3), strtransform(3),