On 9/12/26 08:38, Jerry Delisle wrote:
```Maybe at compile time -O3 is reducing using higher precision mpfr so the closest absolute is 0.A guess.
Yep. -fdump-tree-all shows '__builtin_j0f (_2)' in many of the dumped files. However, when one looks at -bessel.f90.272t.optimized, it has been evaluated. The expected values in the original program are the correctly rounded results from mpfr. I'm interested in see what the Bessel function routine in libm returns. -- steve
