Effacer les filtres
Effacer les filtres

convert decimal to hex with 3 digit

12 vues (au cours des 30 derniers jours)
Jay
Jay le 20 Déc 2023
Commenté : Stephen23 le 20 Déc 2023
I just realized that converting -30 to hexadecial by dec2hex(-30) is different from its converting back by hex2dec('E2'). Any suggestion donig right?
dec2hex(-30)
ans = 'E2'
hex2dec('E2')
ans = 226
Also if I want to specify the decimal in signed 12 bit (e.g., 3 hex digital), what am I supposed to do?

Réponse acceptée

Chunru
Chunru le 20 Déc 2023
dec2hex(-30) % this converts to hex in 2's complement
ans = 'E2'
hex2dec('E2') % this treats the hex as unsigned by default
ans = 226
hex2dec('0xE2s8') % s8 to indicate the hex is a signed 8 bit nmber; 0x prefix is also needed
ans = -30
  2 commentaires
Jay
Jay le 20 Déc 2023
Modifié(e) : Jay le 20 Déc 2023
Thanks a lot! This partially resolve my issues. What am I supposed to do if I convert a signed 12-bit to hexadecimal number or vice versa?
To be more specific, my problem is follow.
I have list of decimal number which can be represented by signed 12-bit. Simply converting them using dec2hex gives various word lengths (e.g., 2 or 3 hex digits some time and 4 hex digits for some negative numbers). Any way to convert to 3-hex digit which is corresponding to signed 12 bits? Otherwise, the indication of the signed bit width in your solution (e.g., hex2dec('0xE2s8') only for partially and 3 or 4 hex digit numbers have to be processed separately.
Stephen23
Stephen23 le 20 Déc 2023
dec2hex(-30,4)
ans = 'FFE2'
hex2dec('0xFFE2s16')
ans = -30

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Digital Input and Output dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by