3 #include "stdio_impl.h"
7 /* This read function heavily cheats. It knows:
8 * (1) len will always be 1
9 * (2) non-ascii characters don't matter */
11 static size_t do_read(FILE *f, unsigned char *buf, size_t len)
14 const wchar_t *wcs = f->cookie;
16 if (!wcs[0]) wcs=L"@";
17 for (i=0; i<f->buf_size && wcs[i]; i++)
18 f->buf[i] = wcs[i] < 128 ? wcs[i] : '@';
21 f->cookie = (void *)(wcs+i);
30 static long double wcstox(const wchar_t *s, wchar_t **p, int prec)
32 wchar_t *t = (wchar_t *)s;
33 unsigned char buf[64];
38 f.buf_size = sizeof buf - 4;
41 while (iswspace(*t)) t++;
44 long double y = __floatscan(&f, prec, 1);
46 size_t cnt = shcnt(&f);
47 *p = cnt ? t + cnt : (wchar_t *)s;
52 float wcstof(const wchar_t *restrict s, wchar_t **restrict p)
54 return wcstox(s, p, 0);
57 double wcstod(const wchar_t *restrict s, wchar_t **restrict p)
59 return wcstox(s, p, 1);
62 long double wcstold(const wchar_t *restrict s, wchar_t **restrict p)
64 return wcstox(s, p, 2);