Adding Hexadecimal numbers?

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Jed Louise Ledesma
Jed Louise Ledesma il 17 Ott 2019
Risposto: Walter Roberson il 17 Ott 2019
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?

Risposta accettata

Robert U
Robert U il 17 Ott 2019
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
  3 Commenti
Robert U
Robert U il 17 Ott 2019
The "hex"-values are supposed to be given as char. Thus the str2double()-command should be deleted.
Kind regards,
Robert
Jed Louise Ledesma
Jed Louise Ledesma il 17 Ott 2019
I appreciate what you did.
Thank you!

Accedi per commentare.

Più risposte (2)

Steven Lord
Steven Lord il 17 Ott 2019
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

Walter Roberson
Walter Roberson il 17 Ott 2019
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.

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