static if(!(isIntegral!FT && isIntegral!TT && FD == TD && FD == 0))
static if(!(isIntegral!FT && isFloatingPoint!TT && FD == TD && FD == 0))
static if(!(isFloatingPoint!FT && isIntegral!TT && FD == TD && FD == 0))
static if(isSomeString!FT && isSomeString!TT && FD == TD && FD == 0)