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isextupper | Function (Macro) |
ctype.h |
short isextupper (short c); |
Checks whether a character is an uppercase, including foreign ones.
isextupper returns nonzero if c is an uppercase letter, either ordinary ('A' to 'Z') or foreign one (see isfrgnupper), otherwise it returns zero. It is an inline function which is implemented using GNU C smart macros, which expands to a medium-sized code.