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| author | Aaron Ballman <aaron@aaronballman.com> | 2024-06-21 13:20:20 -0400 |
|---|---|---|
| committer | Aaron Ballman <aaron@aaronballman.com> | 2024-06-21 13:28:02 -0400 |
| commit | 131bc0390dba1bc21fb8af8e5e8afa78a17d39b9 (patch) | |
| tree | 664b2eeaadffd858d166a6375997882fc1010ed0 /clang | |
| parent | e23250ecb7e09170e584db60375100790f39fac9 (diff) | |
| download | llvm-131bc0390dba1bc21fb8af8e5e8afa78a17d39b9.zip llvm-131bc0390dba1bc21fb8af8e5e8afa78a17d39b9.tar.gz llvm-131bc0390dba1bc21fb8af8e5e8afa78a17d39b9.tar.bz2 | |
[C99] Claim partial conformance to IEC 60559 support
We intend to support Annex F but there are edge cases we don't handle
properly, such as raising an "invalid" exception when converting some
floating-point values to integers.
This does not add any test coverage as full conformance would require
sufficiently extensive testing that we should consider getting a
third-party test suite such as the one from http://tybor.com/
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/www/c_status.html | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/clang/www/c_status.html b/clang/www/c_status.html index 170ab0e1..d8700d6 100644 --- a/clang/www/c_status.html +++ b/clang/www/c_status.html @@ -277,7 +277,25 @@ conformance.</p> <tr> <td>IEC 60559 support</td> <td>Unknown</td> - <td class="unknown" align="center">Unknown</td> + <td class="partial" align="center"> + <details><summary>Partial</summary> + Clang supports much of the language requirements for Annex F, but + full conformance is only possible to determine when considering the + compiler's language support, the C runtime library's math library + support, and the target system's floating-point environment support. + Clang does not currently raise an "invalid" floating-point exception + on certain conversions, does not raise floating-point exceptions for + arithmetic constant expressions, and other corner cases. Note, Clang + does not define <code>__STDC_IEC_559__</code> because the compiler + does not fully conform. However, some C standard library + implementations + (<a href="https://sourceware.org/git/?p=glibc.git;a=blob;f=include/stdc-predef.h"> + glibc</a>, <a href="https://git.musl-libc.org/cgit/musl/tree/include/stdc-predef.h"> + musl</a> will define the macro regardless of compiler support unless + the compiler defines <code>__GCC_IEC_559</code>, which Clang does not + currently define. + </details> + </td> </tr> <tr> <td>trailing comma allowed in enum declaration</td> |