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Make a note in the docs that we diverge from the standard on ERANGE

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Matt Borland
2023-05-17 09:08:15 +02:00
parent 72a62c91d5
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doc/charconv/from_chars.adoc
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@@ -49,6 +49,10 @@ from_chars_result from_chars(const char* first, const char* last, Real& value, c
* from_chars for integral types is constexpr when compiled using `-std=c++14` or newer
** One known exception is GCC 5 which does not support constexpr comparison of `const char*`.
=== from_chars for floating point types
* On ERANGE we return ±0 for small values (e.g. 1.0e-99999) or ±HUGE_VAL for large values (1.0e+99999) to match the handling of `std::strtod`.
This is a divergence from the standard.
== Examples
=== Basic usage