MATLAB: Help with single precision floating point arithmetic

conversionfloating pointMATLAB

Hello Can you help me with the single precision floating point arithmetic in matlab I need to generate twiddle factors and obtain the output in the binary format( which is the standard IEEE 754 single precision 32-bit floating point format).Is there any function in MATLAB that will directly convert any value such as sine(pi/4)into the single precision format?

Thanks!

Best Answer

dec2bin(typecast(single(pi),'uint32'),32)

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MATLAB: Converting Hex value to negative fractional decimal

It looks like your hexadecimal values are the representation of a single precision IEEE 754 number, in little endian format.

hexvalues = ['BF6E23F8';'3CCCE6BD';'BF6E158D';'C1C63C18']
hexbits = uint32(hex2dec(hexvalues));       %convert hexadecimal to 32-bit integer representation
[~, ~, endianness] = computer;
if endianness == 'B'
   hexbits = swapbytes(hexbits);            %on a big-endian computer, switch endianness
end
hexassingle = typecast(hexbits, 'single')   %cast from integer to single

MATLAB: I can’t understand how PI become 400921fb54442d18 in hex format?

Research IEEE 754 Double Precision representation.

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MATLAB: Converting Hex value to negative fractional decimal

MATLAB: I can’t understand how PI become 400921fb54442d18 in hex format?

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