MNIST-Fashion-Images-Detection---ES203-Digital-Systems-Project/PythonFloatpointconv.txt at master · mrfire15/MNIST-Fashion-Images-Detection---ES203-Digital-Systems-Project · GitHub

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import os
def binaryOfFraction(fraction):


    binary = str()


    while (fraction):


        fraction *= 2


        if (fraction >= 1):
            int_part = 1
            fraction -= 1
        else:
            int_part = 0


        binary += str(int_part)


    return binary


def binaryOfFraction(fraction):


    binary = str()


    while (fraction):


        fraction *= 2


        if (fraction >= 1):
            int_part = 1
            fraction -= 1
        else:
            int_part = 0


        binary += str(int_part)


    return binary


def floatingPoint(real_no):


    sign_bit = 0


    if(real_no < 0):
        sign_bit = 1


    real_no = abs(real_no)


    int_str = bin(int(real_no))[2 : ]
    #print(int_str)


    fraction_str = binaryOfFraction(real_no - int(real_no))
    if(real_no<1):
        ind = fraction_str.index('1')
        exp_str=bin(-(ind+1)+127)[2:]#right shift of decimal
        exp_str =  ('0' * (8- len(exp_str)))+exp_str
        if(ind==len(fraction_str)-1):
            mant_str="0"
        mant_str = fraction_str[ind + 1 : ]

        mant_str = mant_str + ('0' * (23 - len(mant_str)))#filling with 0s in LSb if bits are less than 23
        mant_str=mant_str[0:23]#if bits are more than 23


    else:
        ind = int_str.index('1')

        exp_str = bin((len(int_str) - ind - 1) + 127)[2 : ]
        if (real_no==1):
            exp_str="0"+bin((len(int_str) - ind - 1) + 127)[2: ]


        exp_str =  ('0' * (8- len(exp_str)))+exp_str

        mant_str = int_str[ind + 1 : ] + fraction_str


        mant_str = mant_str + ('0' * (23 - len(mant_str)))
        if(len(mant_str)>23):
            mant_str=mant_str[0:23]

    return sign_bit, exp_str, mant_str

# Driver Code
if __name__ == "__main__":

    #sign_bit, exp_str, mant_str = floatingPoint(0.75)


    #ieee_32 = str(sign_bit) + exp_str  + mant_str

    #Printing the ieee 32 represenation.


    infile=open("C:\\Users\\rohit\\Downloads\\five_values.txt","r")
    file=open("C:\\Users\\rohit\\Downloads\\five_values_fp.txt","a")
    lines=infile.readlines()
    file.truncate(0)
    infile.close()
    for i in lines:
        try:
            x=float(i)/255
            sign_bit, exp_str, mant_str = floatingPoint(x)
            ieee_32 = str(sign_bit) + exp_str  + mant_str

    #print(ieee_32)
            file.write(ieee_32+"\n")

        except ValueError:
            file.write("0"*32+"\n")


    file.close()


    #sign_bit, exp_str, mant_str = floatingPoint(int(i)/256)
    #ieee_32 = str(sign_bit) + exp_str  + mant_str
    #print(ieee_32)