diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/changelog/03-notations/11859-warn-inexact-float.rst | 6 | ||||
| -rw-r--r-- | doc/sphinx/language/coq-library.rst | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/doc/changelog/03-notations/11859-warn-inexact-float.rst b/doc/changelog/03-notations/11859-warn-inexact-float.rst new file mode 100644 index 0000000000..224ffdbe9b --- /dev/null +++ b/doc/changelog/03-notations/11859-warn-inexact-float.rst @@ -0,0 +1,6 @@ +- **Added:** + In primitive floats, print a warning when parsing a decimal value + that is not exactly a binary64 floating-point number. + For instance, parsing 0.1 will print a warning whereas parsing 0.5 won't. + (`#11859 <https://github.com/coq/coq/pull/11859>`_, + by Pierre Roux). diff --git a/doc/sphinx/language/coq-library.rst b/doc/sphinx/language/coq-library.rst index 39f2ccec29..acdd4408ed 100644 --- a/doc/sphinx/language/coq-library.rst +++ b/doc/sphinx/language/coq-library.rst @@ -1062,6 +1062,11 @@ Floating-point constants are parsed and pretty-printed as (17-digit) decimal constants. This ensures that the composition :math:`\text{parse} \circ \text{print}` amounts to the identity. +.. warn:: The constant @numeral is not a binary64 floating-point value. A closest value will be used and unambiguously printed @numeral. [inexact-float,parsing] + + Not all decimal constants are floating-point values. This warning + is generated when parsing such a constant (for instance ``0.1``). + .. example:: .. coqtop:: all |