On Tue, Aug 23, 2011 at 05:42:59PM -0400, Mike Frysinger wrote:
On Tuesday, August 23, 2011 17:06:54 Jason Hobbs wrote:
- while (*nn == ' ' || *nn == '\t')
- while (isblank(*nn)) nn++;
at least for these "walking forward" ones, they could be replaced with: nn += strspn(nn, " \t"); -mike
Sure, and we'd pick up the use of a currently unused function which might otherwise get optimized away with linker garbage collection. Even without taking garbage collection of strspn into account, switching one of the "walkahead while isblank" lines in my tree to the strspn pattern inceases my binary size by 11 bytes - two of them inceases it by 31 bytes. There's also the extra overhead for the function call and strspn's local variables. I'd consider it if strspn was more readable (I don't think it is), or there was some cost to adding the isblank macro (there isn't, as it's replacing existing code that was doing the same thing).
Jason