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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
void *
libsimple_memelemscan_inv(const void *hay_, size_t hayn, const void *sub_, size_t subn)
{
switch (subn) {
case 0:
return (void *)hay_;
case 1:
return libsimple_memscan_inv(hay_, *(char *)sub_, hayn);
case 2:
{
uint16_t *hay = (void *)hay_;
uint16_t sub = *(uint16_t *)sub_;
for (; hayn-- && *hay == sub; hay++);
return hay;
}
case 4:
{
uint32_t *hay = (void *)hay_;
uint32_t sub = *(uint32_t *)sub_;
for (; hayn-- && *hay == sub; hay++);
return hay;
}
case 8:
{
uint64_t *hay = (void *)hay_;
uint64_t sub = *(uint64_t *)sub_;
for (; hayn-- && *hay == sub; hay++);
return hay;
}
default:
{
char *hay = (void *)hay_;
const char *sub = sub_;
size_t i;
for (; hayn--; hay += subn) {
for (i = 0; i < subn; i++)
if (hay[i] != sub[i])
return hay;
}
return hay;
}
}
}
#else
#include "test.h"
int
main(void)
{
assert(!strcmpnul(libsimple_memelemscan_inv("xxoxx", 5, "x", 0), "xxoxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("xxXxx", 5, "x", 0), "xxXxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("XXoxx", 5, "x", 0), "XXoxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("zzzzz", 5, "z", 0), "zzzzz"));
assert(!strcmpnul(libsimple_memelemscan_inv("zzzzx", 3, "z", 0), "zzzzx"));
assert(!strcmpnul(libsimple_memelemscan_inv("xxoxx", 5, "x", 1), "oxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("xxXxx", 5, "x", 1), "Xxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("XXoxx", 5, "x", 1), "XXoxx"));
assert(!strcmpnul(libsimple_memelemscan_inv("zzzzz", 5, "z", 1), ""));
assert(!strcmpnul(libsimple_memelemscan_inv("zzzzx", 3, "z", 1), "zx"));
assert(!strcmpnul(libsimple_memelemscan_inv("-x-x-o-x-x", 5, "-x", 2), "-o-x-x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-x-x-X-x-x", 5, "-x", 2), "-X-x-x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-X-X-o-x-x", 5, "-x", 2), "-X-X-o-x-x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-z-z-z-z-z", 5, "-z", 2), ""));
assert(!strcmpnul(libsimple_memelemscan_inv("-z-z-z-z-x", 3, "-z", 2), "-z-x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---z-z-z-x", 5, "--", 2), "-z-z-z-x"));
assert(!strcmpnul(libsimple_memelemscan_inv("--x--x--o--x--x", 5, "--x", 3), "--o--x--x"));
assert(!strcmpnul(libsimple_memelemscan_inv("--x--x--X--x--x", 5, "--x", 3), "--X--x--x"));
assert(!strcmpnul(libsimple_memelemscan_inv("--X--X--o--x--x", 5, "--x", 3), "--X--X--o--x--x"));
assert(!strcmpnul(libsimple_memelemscan_inv("--z--z--z--z--z", 5, "--z", 3), ""));
assert(!strcmpnul(libsimple_memelemscan_inv("--z--z--z--z--x", 3, "--z", 3), "--z--x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-----z--z--z--x", 5, "---", 3), "--z--z--z--x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---x---x---o---x---x", 5, "---x", 4), "---o---x---x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---x---x---X---x---x", 5, "---x", 4), "---X---x---x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---X---X---o---x---x", 5, "---x", 4), "---X---X---o---x---x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---z---z---z---z---z", 5, "---z", 4), ""));
assert(!strcmpnul(libsimple_memelemscan_inv("---z---z---z---z---x", 3, "---z", 4), "---z---x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-------z---z---z---x", 5, "----", 4), "---z---z---z---x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-------x-------x-------o-------x-------x", 5, "-------x", 8),
"-------o-------x-------x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-------x-------x-------X-------x-------x", 5, "-------x", 8),
"-------X-------x-------x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-------X-------X-------o-------x-------x", 5, "-------x", 8),
"-------X-------X-------o-------x-------x"));
assert(!strcmpnul(libsimple_memelemscan_inv("-------z-------z-------z-------z-------z", 5, "-------z", 8), ""));
assert(!strcmpnul(libsimple_memelemscan_inv("-------z-------z-------z-------z-------x", 3, "-------z", 8),
"-------z-------x"));
assert(!strcmpnul(libsimple_memelemscan_inv("---------------z-------z-------z-------x", 5, "--------", 8),
"-------z-------z-------z-------x"));
return 0;
}
#endif
|
