OvermindDL1 wrote:
I just changed the file to use spirit for parsing where I had used lexical_cast got very different timings for xpressive now, so now, with xpressive using a bit of spirit I get: Loop count: 10000000 Parsing: 42.5 xpressive: 15.4841 spirit-quick(static): 3.01117 spirit-quick_new(threadsafe): 3.10548 spirit-grammar(threadsafe/reusable): 3.81694
Vast increase, 3x faster xpressive is now. Also, how do you fix that rather bloody massive warning about double->int64 truncation? I also changed all int64_t to boost::long_long_type since they are the same thing anyway (on 32-bit at least?), as well as it being multi-platform unlike int64_t. My changed file is attached. Do not know if this is considered cheating now that xpressive is using some spirit now. ;-)
That one doesn't compile for me. On line 402: boost::spirit::qi::parse(va.begin(), va.end(), boost::spirit::double_[boost::phoenix::ref(value)]); I get no instance of overloaded function "boost::spirit::qi::parse" matches the argument list (and the same on all the similar lines) and indeed I see can't see an appropriate overload in the spirit headers (in boost trunk), but it's hard to be sure since there are so many functions called parse! John Bytheway