scanf(3) patch for C99-conformant FP parsing

[Andrey Chernov]

On Tue, Jun 24, 2003 at 14:49:22 -0400, Garance A Drosihn wrote:

> #define isdigitch(Anychar)    isdigit(((int) Anychar) & 255)
> #define isupperch(Anychar)    isupper(((int) Anychar) & 255)
> #define isxdigitch(Anychar)   isdigit(((int) Anychar) & 255)
> #define tolowerch(Anychar)    tolower(((int) Anychar) & 255)

Just (unsigned char) cast produce better code and more readable.

In any case & 255 alone will be enough without needs to convert to (int) 
first.