NAME
	m_sizeof - returns size of a mapping

SYNOPSIS
	#define m_sizeof(map)


DESCRIPTION
	Returns size of a mapping map.

	This macro will only exist if config.h defines
	MUDOS_MAPPING_FUNCS.

NOTICE
	This is only for backwards compatibility of the namespace.

SEE ALSO
	macros/keys, macros/values, macros/a_sizeof
