Hex 01A9 to 16-binary?

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WARRIOR24
WARRIOR24 2020-12-16
编辑： Stephen23 2020-12-17
I am trying to convert this input 01A9 into binary
4bit Hex input
01A9
16bit Binary Output
0000 0001 1010 1001
**no spaces

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采纳的回答

Walter Roberson
Walter Roberson 2020-12-16
Ran in:
H = '01A9';
dec2bin(sscanf(H, '%4x'),16)
ans = '0000000110101001'
Note that the result will be character.
H can have more than 4 characters, and will be interpreted 4 characters at a time from the beginning . So if H is not an exact multiple of 4 characters, this particular algorithm will not implicitly pad from the begining with 0's -- only the last group will be 0 padded.
dec2bin(sscanf('01A9876', '%4x'),16)
ans = 2x16 char array
'0000000110101001' '0000100001110110'
This was interpretered as 01A9 (0)876.
If you needed to be padded with leading 0s implicitly then that could certainly be programmed.

更多回答（2 个）

Stephen23
Stephen23 2020-12-17
编辑：Stephen23 2020-12-17
Ran in:
No loops, no padding, works correctly for any number of hex digits (not just 16 bits):
H = '01A9';
B = reshape(dec2bin(sscanf(H,'%1x'),4).',1,[])
B = '0000000110101001'
James Tursa
James Tursa 2020-12-16
编辑：James Tursa 2020-12-16
E.g., if H is not too big:
H = '01A9';
B = dec2bin(hex2dec(H),numel(H)*4)
Otherwise you will need some form of a loop (explicit or hidden in a function call). E.g.,
C = arrayfun(@(h)dec2bin(hex2dec(h),4),H,'uni',false);
B = [C{:}]

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