diff --git a/doc/charconv/from_chars.adoc b/doc/charconv/from_chars.adoc
index 6188dee..bfd279a 100644
--- a/doc/charconv/from_chars.adoc
+++ b/doc/charconv/from_chars.adoc
@@ -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