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
|
#include "stdio_impl.h"
#include "intscan.h"
#include "shgetc.h"
static unsigned long long strtox(const char *s, char **p, int base, unsigned long long lim)
{
/* FIXME: use a helper function or macro to setup the FILE */
FILE f;
f.flags = 0;
f.buf = f.rpos = (void *)s;
if ((size_t)s > (size_t)-1/2)
f.rend = (void *)-1;
else
f.rend = (unsigned char *)s+(size_t)-1/2;
f.lock = -1;
shlim(&f, 0);
unsigned long long y = __intscan(&f, base, 1, lim);
if (p) {
size_t cnt = shcnt(&f);
*p = (char *)s + cnt;
}
return y;
}
unsigned long long strtoull(const char *restrict s, char **restrict p, int base)
{
return strtox(s, p, base, ULLONG_MAX);
}
long long strtoll(const char *restrict s, char **restrict p, int base)
{
return strtox(s, p, base, LLONG_MIN);
}
unsigned long strtoul(const char *restrict s, char **restrict p, int base)
{
return strtox(s, p, base, ULONG_MAX);
}
long strtol(const char *restrict s, char **restrict p, int base)
{
return strtox(s, p, base, 0UL+LONG_MIN);
}
intmax_t strtoimax(const char *restrict s, char **restrict p, int base)
{
return strtoll(s, p, base);
}
uintmax_t strtoumax(const char *restrict s, char **restrict p, int base)
{
return strtoull(s, p, base);
}
|
