Is there a way to read 16bit float(mantissa 8bit)bin file?
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I've found a function CustomFloat but I can't find a way to read the file...
it goes like this
00 00 07 00 F8 FF FD FF 01 00 01 00 01 00 FF FF
8 Comments
James Tursa
on 7 Sep 2022
Edited: James Tursa
on 7 Sep 2022
@Walter Roberson Would also need to know whether the significand is normalized to 1.0 binary or 0.1 binary. This ties in with the exponent bias, of course.
Accepted Answer
Walter Roberson
on 7 Sep 2022
str = "00 00 07 00 F8 FF FD FF 01 00 01 00 01 00 FF FF 46 C0 B9 40"
A = sscanf(str, "%2x", [1 inf]);
if mod(numel(A), 2) == 1; A(end+1) = 0; end %pad if odd length
MSB = A(1:2:end);
mask = MSB >= 128;
MSB(mask) = MSB(mask) - 256;
LSB = A(2:2:end);
out = MSB + LSB/256;
format long g
out.'
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More Answers (1)
Chunru
on 5 Sep 2022
str = "00 00 07 00 F8 FF FD FF 01 00 01 00 01 00 FF FF"
a = sscanf(str, "%s%s", inf);
n = floor(length(a)/4)
afi = fi(0, 1, 16, 7); % signed, 16-bit word, 7-bit fraction
for i=1:n
h = a((i-1)*4 + (1:4)); % the hex from data input
afi.hex = h; % assign the hex to fi
d = afi.double; % convert to double
fprintf("%s : %f\n", afi.hex, afi.double)
end
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