සැකිල්ල:ශතකකොටුව/සියවන

This template corrects any century number less than one then passes parameters on to {{ශතකකොටුව/nවනශතක}} which, in turn converts {{{1}}} to {{{1}}}th century (BC) (BC is included iff {{{2}}}=BC) allowing for alternatives to century & BC (respective defaults of {{{cm}}} & {{{bc}}}).