Rich Felker
400c5e5c83
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
#include "stdio_impl.h"
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#include "intscan.h"
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#include "shgetc.h"
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static unsigned long long strtox(const char *s, char **p, int base, unsigned long long lim)
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{
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/* FIXME: use a helper function or macro to setup the FILE */
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FILE f;
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f.flags = 0;
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f.buf = f.rpos = (void *)s;
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if ((size_t)s > (size_t)-1/2)
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f.rend = (void *)-1;
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else
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f.rend = (unsigned char *)s+(size_t)-1/2;
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f.lock = -1;
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shlim(&f, 0);
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unsigned long long y = __intscan(&f, base, 1, lim);
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if (p) {
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size_t cnt = shcnt(&f);
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*p = (char *)s + cnt;
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}
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return y;
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}
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unsigned long long strtoull(const char *restrict s, char **restrict p, int base)
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{
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return strtox(s, p, base, ULLONG_MAX);
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}
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long long strtoll(const char *restrict s, char **restrict p, int base)
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{
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return strtox(s, p, base, LLONG_MIN);
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}
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unsigned long strtoul(const char *restrict s, char **restrict p, int base)
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{
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return strtox(s, p, base, ULONG_MAX);
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}
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long strtol(const char *restrict s, char **restrict p, int base)
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{
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return strtox(s, p, base, 0UL+LONG_MIN);
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}
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intmax_t strtoimax(const char *restrict s, char **restrict p, int base)
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{
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return strtoll(s, p, base);
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}
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uintmax_t strtoumax(const char *restrict s, char **restrict p, int base)
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{
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return strtoull(s, p, base);
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}
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