Define UChar to be wchar_t if that is 16 bits wide; always assumed to be unsigned. If wchar_t is not 16 bits wide, then define UChar to be uint16_t or char16_t because GCC >=4.4 can handle UTF16 string literals. This makes the definition of UChar platform-dependent but allows direct string type compatibility with platforms with 16-bit wchar_t types.

ICU 4.4

Definition at line 316 of file umachine.h.