[英]How to convert 32-bit binary to float
I want to perform IEEE 754 conversion from 32-bit binary to float in python. 我想执行从32位二进制到python浮点的IEEE 754转换。
i have tried this 我已经试过了
import struct
f = int('11000001101011000111101011100001', 2)
print struct.unpack('f', struct.pack('i', f))[0]
but this doesn't work for numbers with negative sign bit. 但这不适用于带负号位的数字。
Expected output should be like this: 预期的输出应如下所示:
bintofloat(11000001101011000111101011100001)
>>> -21.56
You could use struct
as follows: 您可以按以下方式使用
struct
:
import struct
f = int('01000001101011000111101011100001', 2)
print struct.unpack('f', struct.pack('I', f))[0]
f = int('11000001101011000111101011100001', 2)
print struct.unpack('f', struct.pack('I', f))[0]
Giving you an output of: 提供以下输出:
21.5599994659
-21.5599994659
It all depends on how the integer is represented though. 这完全取决于整数的表示方式。
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