Adding Hexadecimal numbers?

Can someone help me how to add 2 hexadecimal numbers? I would appreciate the help and sentiment.

I tried using: c=dec2hex(hex2dec(a)+hex2dec(b)));

But it didn't work. Is there a correct way to do this?

Answer 1

[Robert U]

Hi Jed Louise Lesma,

Despite the extra bracket in your code (I removed it), the method you tried should work:

a = '3afb';
b = '2839';

c=dec2hex(hex2dec(a)+hex2dec(b));

Kind regards,

Robert

[Jed Louise Ledesma]

Hello Robert,

Thank you for replying! Sorry about the extra bracket my eyes were kinda hazy.

Can this code also be used in a gui?

c=dec2hex(hex2dec(a)+hex2dec(b));

I tried inputting it like this:

a = str2double(get(handles.edit1, 'String'));

b = str2double(get(handles.edit2, 'String'));

c = dec2hex(hex2dec(a)+hex2dec(b));

but it responded with this:

Error using hex2dec>hex2decImpl (line 58)

Input to hex2dec should have just 0-9, a-f, or A-F.

[Robert U]

The "hex"-values are supposed to be given as char. Thus the str2double()-command should be deleted.

Kind regards,

Robert

[Jed Louise Ledesma]

I appreciate what you did.

Thank you!

Answer 2

[Steven Lord]

If you're using release R2019b or later, you can enter hexadecimal numbers directly.

>> 0x3afb + 0x2839
ans =
  uint16
   25396

>> hex2dec('3afb')+hex2dec('2839')
ans =
       25396

Answer 3

[Walter Roberson]

If there is a possibility that the user might enter hex values with more than 53 significant bits then you should use sscanf with %lx format instead of hex2dec.