Converting decimal value to binary

Question

Pat 2012-11-21

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I have to convert decimal value to binary ,in hich my decimal value is in negative and positive
my values are 
a=[ 0.0803
    0.0726
    0.0469
   -0.0038
   -0.0421]
please help how to convert to binary

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Answer 1

Harshit 2012-11-21

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http://www.mathworks.in/help/matlab/ref/dec2bin.html. See this. It will do 2's complement for negative numbers

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Harshit 2012-11-21

在 MATLAB Online 中打开

ok sorry. i didn't notice. for negative integers a

if true
  % a=-x;
b=dec2bin(2^n+a);
end

for fractions convert first them into positive say -16.56 = -17 + 0.42. Get the binary of negative using the scheme above and get the binary of 0.42 bu multiplying by 2 at each instant and gathering the integer part. You will do it ofcourse on the basis of precision you required. n denotes the number of integer bit for you.

Pat 2012-11-21

ok harshit thanks can you please tell how to convert values in a to signed 14 bit,those are ouputs of wavelet coefficients of a soundwave

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Answer 2

Walter Roberson 2012-11-21

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There are three competing standards for the representation of negative integers.

There are many methods for the representation of fractions. The ones used to represent floating point double precision numbers use some schemes that required work to deal with unusual cases.

We cannot tell you how to do the conversion until you tell us which representation you wish to use.