How to display double-precision floating-point number in binary representation?

Hello, I'm currently working with Simulink. There I'm reading a value out of a Data Store Memory. This value is a double value, so a floating-point number. Now I want to display this number in its binary representation. Since this is not possible with a display block, I'm looking for another way. Thanks!

Answer 1

[Walter Roberson]

MATLAB Function block. You can typecast() to uint64, and then you can use bitget() . Or you can use num2hex() on the floating point and then decode the hex if you want a binary representation.

If you do use num2hex, be aware that the output is in Big Endian order -- most significant bit left to least significant right. On all Intel x86 and x64 architectures, the order in memory is Little Endian.

>> dec2hex(typecast(hex2num('0123456789ABCDEF'),'uint8'))
ans =
  8×2 char array
    'EF'
    'CD'
    'AB'
    '89'
    '67'
    '45'
    '23'
    '01'

[Tim Leschinsky]

Thanks for your answer, I use Big Endian anyway, so it's just fine.