Stefan Krah <stefan-use...@bytereef.org> added the comment: I benchmarked _PyOS_ascii_strtod without the macros, with the macros and with always calling both fnstcw/fldcw. There is no real difference:
import timeit s = "str(38210.0)" t = timeit.Timer(stmt=s) t.timeit(number=10000000) t.timeit(number=10000000) t.timeit(number=10000000) # None >>> t.timeit(number=10000000) 3.7519991397857666 >>> t.timeit(number=10000000) 3.759944200515747 >>> t.timeit(number=10000000) 3.7730538845062256 >>> # Macros >>> t.timeit(number=10000000) 3.780745029449463 >>> t.timeit(number=10000000) 3.777444839477539 >>> t.timeit(number=10000000) 3.7622230052948 # fnstcw/fldcw >>> t.timeit(number=10000000) 3.765655994415283 >>> t.timeit(number=10000000) 3.7517099380493164 >>> t.timeit(number=10000000) 3.749257802963257 ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue9980> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
