hubert-reinterpretcast wrote:
A problem with the current patch is that it does not evaluate, even in constant
expression contexts, cases that require rounding:
```cpp
extern constexpr float onepluszeroeps = __builtin_fmaf(__FLT_EPSILON__, .0f,
1.f);
extern constexpr float oneplushalfeps = __builtin_fmaf(__FLT_EPSILON__, .5f,
1.f);
```
```
<stdin>:2:24: error: constexpr variable 'oneplushalfeps' must be initialized by
a constant expression
2 | extern constexpr float oneplushalfeps = __builtin_fmaf(__FLT_EPSILON__,
.5f, 1.f);
| ^
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
```
https://github.com/llvm/llvm-project/pull/113020
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