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function d = my_bi2de(b, msbflag) 
 
%now i need to convert bit vector into decimal numbers. so my_bi2de is the 
%function for that, d is the output decimal number, b is the binary vector, 
%and msbflag is unlike my_de2bi function to check the msb position. 
 
%santosh shah, The LNM IIT Jaipur (India)(santosh.jnt@gmail.com) 23/04/07 
 
if nargin < 2 % by default msb bit is at the right side 
    msbflag = 'right_msb';  
end  
 
%checking the matrix containt wheter it has 1's or 0's or not. 
if ~all(all(b==1 | b==0)) 
    error('matrix containt can not be other than 1 and 0'); 
end 
     
%now i am going to check the matrix dimention 
 
[nrow ncol] = size(b); 
%computing decimal number 
[nrows ncols] = size(b); 
d = zeros(nrows, 1); 
power_two = 2 .^ [0:ncols-1]; % computing in the form [1 2 4 8] 
 
%checking the condition of msbflags  
switch(msbflag) 
    case 'left_msb' 
        b = fliplr(b); 
    case 'right_msb' 
        %leave as same 
    otherwise 
        error('Invalid value of MSBFLAG'); 
end 
d = b * power_two';