MATLAB: Matlab hex2dec function not converting hex into dec accurately.

hex2dechexadecimalhexadecimal to decimal conversionprecision

I am trying to convert Hex: C3B829A1E8642B78 in matlab using hex2dec but it is not giving me the correct result. I know the problem is of precision, The answer should have been 14103068008476060536 but matlab is giving 14103068008476060000. I want it to be accurate as I have to use the result for further calculations. Please help.

Best Answer

use sscanf eith %lx format for unsigned 64 bit hex.

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MATLAB: How to convert 192 bit string to integer in matlab

See bin2vpi(). Download this package, place it on MATLAB path and then try

 bvar='01001101010000010101000001010000010010010100111001000111001000000100000101001110010001000010000001010010010001010101011001000101010100100101001101000101001000000100110101000001010100000000'
 decValue = bin2vpi(binaryNumber)
 decValue =
    118393144898356765668270710060896425839874520309094946048

MATLAB: Binary representation of stored integer of fi object

Hi,

if you only specify the word length and not the fraction length you get two different objects:

>> fi(0.25, 0, 16)
ans = 
  0.2500
          DataTypeMode: Fixed-point: binary point scaling
            Signedness: Unsigned
            WordLength: 16
        FractionLength: 17
>> fi(0.5, 0, 16)
ans = 
    0.5000
          DataTypeMode: Fixed-point: binary point scaling
            Signedness: Unsigned
            WordLength: 16
        FractionLength: 16

Note the difference on the FractionLength.

Now if you want to have numbers between 0 and 1, so FractionLength 16, you get what I think you are looking for:

>> bin(fi(0.5, 0, 16, 16))
ans =
1000000000000000
>> bin(fi(0.25, 0, 16, 16))
ans =
0100000000000000

Titus

Best Answer

Related Solutions

MATLAB: How to convert 192 bit string to integer in matlab

MATLAB: Binary representation of stored integer of fi object

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