Hexadecimal representation of stored integer of
stored integer of
b = hex(
a in hexadecimal format
as a character vector.
Fixed-point numbers can be represented as
or, equivalently as
The stored integer is the raw binary number, in which the binary point is assumed to be at the far right of the word.
hex returns the hexadecimal representation of the stored
integer of a
fi object. To obtain the hexadecimal representation of
the real-world value of a
fi object, use
fiObject in Hexadecimal Format
Create a signed
fi object with values
1, a word length of 8 bits, and a fraction length of 7 bits.
a = fi([-1 1], 1, 8, 7)
a = -1.0000 0.9922 DataTypeMode: Fixed-point: binary point scaling Signedness: Signed WordLength: 8 FractionLength: 7
Find the hexadecimal representation of the stored integers of
b = hex(a)
b = '80 7f'
This example shows how to write hexadecimal data from the MATLAB workspace into a text file.
Define your data and create a writable text file called
x = (0:15)'/16; a = fi(x, 0, 16, 16); h = fopen('hexdata.txt', 'w');
fprintf function to write your data to the
for k = 1:length(a) fprintf(h, '%s\n', hex(a(k))); end fclose(h);
To see the contents of the file you created, use the
0000 1000 2000 3000 4000 5000 6000 7000 8000 9000 a000 b000 c000 d000 e000 f000
This example shows how to read hexadecimal data from a text file back into the MATLAB workspace.
Define your data, create a writable text file called
hexdata.txt, and write your data to the
x = (0:15)'/16; a = fi(x, 0, 16, 16); h = fopen('hexdata.txt', 'w'); for k = 1:length(a) fprintf(h, '%s\n', hex(a(k))); end fclose(h);
hexdata.txt for reading and read its contents into a workspace variable
h = fopen('hexdata.txt', 'r'); nextline = ''; str = ''; while ischar(nextline) nextline = fgetl(h); if ischar(nextline) str = [str; nextline]; end end fclose(h);
fi object with the correct scaling and assign it the hex values stored in the
b = fi(, 0, 16, 16); b.hex = str
b = 0 0.0625 0.1250 0.1875 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.6875 0.7500 0.8125 0.8750 0.9375 DataTypeMode: Fixed-point: binary point scaling Signedness: Unsigned WordLength: 16 FractionLength: 16
a— Input array
Input array, specified as a