I would also note that %f is the wrong printf flag to use with a double;
you want %d. This shouldn't affect the result since you're only printing
one value, but I don't know the Windows ABI so conceivably it might.
On Fri, Sep 3, 2021 at 8:43 AM arata, mizuki
Hi David,
If I understand correctly, GHC uses mingw-w64’s libc implementation on Windows. Since mingw-w64’s math functions are not of very good quality, it is likely that asinh returns NaN for a very large input.
As to why `asinh(1.7976931348623157e308)` in CAsinh.c produces (seemingly-correct) 710.4758, it is probably because the C compiler (GCC) uses a different implementation of asinh when doing constant folding. As a note, you may get a different (compile-time computed) result for `asinh(x)` if you set a more aggressive optimization flag.
Mizuki
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