xlnt/include
JCrawfy ee593c2673 bug fixes, move the faster serialisation into the numeric header
serialisation ends up roughly 2x improvement going from sstream to snprintf

Run on (4 X 3500 MHz CPU s)
CPU Caches:
  L1 Data 32K (x4)
  L1 Instruction 32K (x4)
  L2 Unified 262K (x4)
  L3 Unified 6291K (x1)
-------------------------------------------------------------------------------------------------------------
Benchmark                                                                   Time             CPU   Iterations
-------------------------------------------------------------------------------------------------------------
RandFloatStrs/double_from_string_sstream                                  968 ns          977 ns       640000
RandFloatStrs/double_from_string_strtod                                   272 ns          270 ns      2488889
RandFloatStrs/double_from_string_strtod_fixed                             272 ns          270 ns      2488889
RandFloatStrs/double_from_string_strtod_fixed_const_ref                   273 ns          270 ns      2488889
RandFloatStrs/double_from_string_std_from_chars                           193 ns          195 ns      3446154
RandFloatCommaStrs/double_from_string_strtod_fixed_comma_ref              272 ns          273 ns      2635294
RandFloatCommaStrs/double_from_string_strtod_fixed_comma_const_ref        276 ns          273 ns      2635294
RandFloats/string_from_double_sstream                                    1311 ns         1318 ns       497778
RandFloats/string_from_double_sstream_cached                             1076 ns         1050 ns       640000
RandFloats/string_from_double_snprintf                                    601 ns          600 ns      1120000
RandFloats/string_from_double_snprintf_fixed                              600 ns          600 ns      1120000
RandFloats/string_from_double_std_to_chars                                117 ns          117 ns      5600000
RandFloatsComma/string_from_double_snprintf_fixed_comma                   600 ns          600 ns      1120000
2020-03-01 22:01:14 +13:00
..
xlnt bug fixes, move the faster serialisation into the numeric header 2020-03-01 22:01:14 +13:00