proc dec2bin dec2bin_dec {
	binary scan [binary format I $dec2bin_dec] B32 dec2bin_bin
	return $dec2bin_bin
}

proc dec2hex dec2hex_dec {
	return [format %x $dec2hex_dec]
}

proc dec2oct dec2oct_dec {
	return [format %o $dec2oct_dec]
}

proc bin2dec bin2dec_bin {
	return [hex2dec [bin2hex $bin2dec_bin]]
}

proc bin2hex bin2hex_binary {
	array set bin2hex_array {
		0000 0 0001 1 0010 2 0011 3 0100 4
		0101 5 0110 6 0111 7 1000 8 1001 9
		1010 a 1011 b 1100 c 1101 d 1110 e 1111 f
	}
	set bin2hex_diff [expr {4-[string length $bin2hex_binary]%4}]
	if {$bin2hex_diff != 4} {
		set bin2hex_binary [format %0${bin2hex_diff}d$bin2hex_binary 0]
	}
	regsub -all .... $bin2hex_binary {$bin2hex_array(&)} bin2hex_hexa
	return [subst $bin2hex_hexa]
}

proc bin2oct bin2oct_bin {
	set bin2oct_dec [hex2dec [bin2hex $bin2oct_bin]]
	return [format %o $bin2oct_dec]
}

proc hex2dec hex2dec_hexa {
	return [expr 0x$hex2dec_hexa]
}

proc hex2bin hex2bin_hexa {
	array set hex2bin_array {
		0 0000 1 0001 2 0010 3 0011 4 0100
		5 0101 6 0110 7 0111 8 1000 9 1001
		a 1010 b 1011 c 1100 d 1101 e 1110 f 1111
		A 1010 B 1011 C 1100 D 1101 E 1110 F 1111
	}
	regsub {^0[xX]} $hex2bin_hexa {} hex2bin_hexa
	regsub -all . $hex2bin_hexa {$hex2bin_array(&)} hex2bin_binary
	return [subst $hex2bin_binary]
}

proc hex2oct hex2oct_hex {
	return [dec2oct [hex2dec $hex2oct_hex]]
}

proc oct2bin oct2bin_oct {
	return [dec2bin [oct2dec $oct2bin_oct]]
}

proc oct2dec oct2dec_oct {
	set oct2dec_oct 0$oct2dec_oct
	return [format %i $oct2dec_oct]
}

proc oct2hex oct2hex_oct {
	return [dec2hex [oct2dec $oct2hex_oct]]
}