基于 IEEE 754 标准的 单精度浮点数计算方式 （未完成）

def dec2bin(dec):

    if dec < 0:

        s = ''

        dec = dec * (-1)

    else:

        s = ''

    e = 127

    dec = float(dec)

    r = int(str(dec).split('.')[0])

    i = float('0.'+str(dec).split('.')[1])

    rA = []

    if s == '':

        if r == 0:

            rA = ['']

        else:

            while r > 0:

                rA.append(r%2)

                r//=2

        rA.reverse()

        rB = ''.join([str(i) for i in rA])

        e = len(str(int(rB))) - 1 + e

    elif s == '':

        rB = ''

    # """

    # 0000 1111 0111 0000 1111 0000 1111 0000

    # """

    iNum = 23 - len(str(int(rB))) + 1

    iA = []

    while len(iA) < iNum:

        i *= 2

        if i>= 1:

            iA.append('')

            i -= 1

            if

        else:

            iA.append('')

            if rB == '' and int(''.join(iA)) <= 0:

                print(iA)

                iNum += 1

                e -= 1

    print(s,bin(e),rB,iA)

def main():

    dec2bin(0.1)

    pass

if __name__ == '__main__':

    main()

参考文献：

[1]. IEEE 754浮点数标准详解