diff options
| -rw-r--r-- | libc/bionic/wctype.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libc/bionic/wctype.cpp b/libc/bionic/wctype.cpp index 6e33b6c51..061f55a90 100644 --- a/libc/bionic/wctype.cpp +++ b/libc/bionic/wctype.cpp @@ -117,12 +117,22 @@ int iswctype_l(wint_t wc, wctype_t char_class, locale_t) { } wint_t towlower(wint_t wc) { + if (wc < 0x80) { + if (wc >= 'A' && wc <= 'Z') return wc | 0x20; + return wc; + } + typedef UChar32 (*FnT)(UChar32); static auto u_tolower = reinterpret_cast<FnT>(__find_icu_symbol("u_tolower")); return u_tolower ? u_tolower(wc) : tolower(wc); } wint_t towupper(wint_t wc) { + if (wc < 0x80) { + if (wc >= 'a' && wc <= 'z') return wc & 0xdf; + return wc; + } + typedef UChar32 (*FnT)(UChar32); static auto u_toupper = reinterpret_cast<FnT>(__find_icu_symbol("u_toupper")); return u_toupper ? u_toupper(wc) : toupper(wc); |