Clarify roles of the two implementations

[ColinH]

Just found this library and am quite surprised by how much of a performance improvement it made for our project!

However, while the interface of the functions is indeed so simple as to be mostly self explanatory, I am unsure about the roles of itoa_jeaiii.cpp and to_chars.cpp, i.e. which one to choose when, seeing that they basically offer the same functionality...

Thanks!

[jeaiii]

Awesome, glad it helped!

The api for itoa_jeaiii.cpp matches that used by the benchmark project and assumes a big enough input buffer like the non-standard itoa() function. to_chars.cpp is written to make implementing std::to_chars easy and has a safer api. to_chars.cpp is the one to use if you want future improvements.

[ColinH]

Thanks, then, for now, we used the more appropriate version, though it required a couple of changes to be integrated into our header-only C++ library.