in PollyTTSEngine/ttsengobj.cpp [587:598]
BOOL SearchSet( WCHAR wc, const WCHAR* Set, ULONG Count, ULONG* pIndex )
{
for( ULONG i = 0; i < Count; ++i )
{
if( wc == Set[i] )
{
*pIndex = i;
return true;
}
}
return false;
}