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
49
50
51
52
53
54
55
56
57
58
59
|
#!/usr/bin/python
import sys
def calculate_one (ov, nv):
old_start = int(ov[18:26],16)
old_end = int(ov[26:34],16)
new_start = int(nv[18:26],16)
new_end = int(nv[26:34],16)
if (new_end < old_start) or (new_start > old_end):
#print '%s, %s -> ZERO' % (ov, nv)
return 0
all_start = max(old_start,new_start)
all_end = min(old_end,new_end)
#print '%s, %s -> %08x' % (ov, nv, all_end - all_start + 1)
return all_end - all_start + 1
def calculate_all (values):
total = 0
nv_index = len(values) / 2
for old_val in values[:nv_index]:
new_val = values[nv_index]
nv_index += 1
total += calculate_one(old_val,new_val)
return total
"""
test1_vals = [
'0x0000000000000000000000003fffffff', # first quarter
'0x0000000000000000400000007fffffff', # second quarter
'0x000000000000000080000000ffffffff', # second half
'0x00000000000000000000000055555554', # first third
'0x000000000000000055555555aaaaaaa9', # second third
'0x0000000000000000aaaaaaaaffffffff', # last third
]
test2_vals = [
'0x0000000000000000000000003fffffff', # first quarter
'0x0000000000000000400000007fffffff', # second quarter
'0x000000000000000080000000ffffffff', # second half
'0x00000000000000000000000055555554', # first third
# Next two are (incorrectly) swapped.
'0x0000000000000000aaaaaaaaffffffff', # last third
'0x000000000000000055555555aaaaaaa9', # second third
]
print '%08x' % calculate_one(test1_vals[0],test1_vals[3])
print '%08x' % calculate_one(test1_vals[1],test1_vals[4])
print '%08x' % calculate_one(test1_vals[2],test1_vals[5])
print '= %08x' % calculate_all(test1_vals)
print '%08x' % calculate_one(test2_vals[0],test2_vals[3])
print '%08x' % calculate_one(test2_vals[1],test2_vals[4])
print '%08x' % calculate_one(test2_vals[2],test2_vals[5])
print '= %08x' % calculate_all(test2_vals)
"""
if __name__ == '__main__':
# Return decimal so bash can reason about it.
print '%d' % calculate_all(sys.argv[1:])
|
