Re: 2.6.19: slight performance optimization for lib/string.c's strstrip()

[Amit Choudhary]

> How about this:
> 
> char *strstrip(char *s)
> {
>         size_t less = 0;
>         char c = 0;
>         char *e = NULL;
> 
>         while ((c=*s) && isspace(c))
>                 s++;
>         if (!c)
>                 return s;
> 
>         e = s;
> 
>         while (c=*e) {
>                  less = isspace(c) ? (less + 1) : 0;
>                  e++;
>         }
> 
>         *(e-less) = 0;
> 
>         return s;
> }
> 

Well, this is not very efficient because it ends up calling isspace() function for all characters.
So, Ulrich's algo is the fastest.

-Amit


 
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