1_3_infiniteseries.py
1.15 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
__author__ = 'chunk'
import struct
def float2bits(f, fmt='bin'):
if fmt == 'hex':
return hex(struct.unpack('!l', struct.pack('!f', f))[0])
return bin(struct.unpack('!l', struct.pack('!f', f))[0])
def double2bits(d, fmt='bin'):
if fmt == 'hex':
return hex(struct.unpack('!q', struct.pack('!d', d))[0])
return bin(struct.unpack('!q', struct.pack('!d', d))[0])
def float2bin(num):
# http://stackoverflow.com/questions/16444726/binary-representation-of-float-in-python-bits-not-hex
bits = [bin(ord(c)).replace('0b', '').rjust(8, '0') for c in struct.pack('!f', num)]
print bits
return ''.join(bits)
def double2bin(num):
# http://stackoverflow.com/questions/16444726/binary-representation-of-float-in-python-bits-not-hex
bits = [bin(ord(c)).replace('0b', '').rjust(8, '0') for c in struct.pack('!d', num)]
print bits
return ''.join(bits)
def infiniteseries():
s = 0
tmp = -1
i = 0
while float(s) != float(tmp):
i += 1
tmp = s
s += float(1.0 / i)
print tmp,s
print i, s, tmp
if __name__ == '__main__':
print float2bin(1.0)
infiniteseries()
pass