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.
32 lines
648 B
C
32 lines
648 B
C
#include <stdlib.h>
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#include "shgetc.h"
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#include "floatscan.h"
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#include "stdio_impl.h"
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static long double strtox(const char *s, char **p, int prec)
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{
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FILE f = {
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.buf = (void *)s, .rpos = (void *)s,
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.rend = (void *)-1, .lock = -1
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};
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shlim(&f, 0);
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long double y = __floatscan(&f, prec, 1);
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off_t cnt = shcnt(&f);
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if (p) *p = cnt ? (char *)s + cnt : (char *)s;
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return y;
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}
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float strtof(const char *restrict s, char **restrict p)
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{
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return strtox(s, p, 0);
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}
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double strtod(const char *restrict s, char **restrict p)
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{
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return strtox(s, p, 1);
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}
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long double strtold(const char *restrict s, char **restrict p)
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{
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return strtox(s, p, 2);
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}
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