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#include <wctype.h> int iswxdigit(wint_t wc) { return (unsigned)(wc-'0') < 10 || (unsigned)((wc|32)-'a') < 6; } int __iswxdigit_l(wint_t c, locale_t l) { return iswxdigit(c); } weak_alias(__iswxdigit_l, iswxdigit_l);