reduces asprintf's use of realloc from quadratic to log-linear performance (ie. calling realloc every time you add a byte is bad, compared to doubling the buffer size every time you call realloc).
Just out of interest, note that a size increase of 50% (i.e. new size = (3*oldsize)/2) has better properties for certain memory managers, as opposed to doubling. It has the same asymptotic complexity improvement as doubling. Roughly speaking, any factor less than the golden ratio (1+sqrt(5))/2 is good, but 1.5 is (a) cheaply obtanied on most cpu architectures, and (b) leaves a little space in case the memory manager adds some overhead. See http://tinyurl.com/yd5669 for details. - robbie -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
