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[Bug fortran/24518] Intrinsic MOD incorrect for large arg1/arg2 and slow.



------- Comment #9 from fxcoudert at gcc dot gnu dot org  2006-10-25 13:53 -------
(In reply to comment #8)
> In the later case, expansion will fall-back to normal library call.

OK. So on system where the math library doesn't have remainderl, for example,
we shouldn't use BUILT_IN_REMAINDERL or it will be missing at link-time? If
that's the case, then we can't implement MOD/MODULO with these built-ins.

> Fortunatelly, no. The result will be correct. You can see the effect of
> -fno-math-errno at http://gcc.gnu.org/ml/gcc-patches/2006-10/msg01158.html.

And now, a harder question: could we activate no-math-errno on a per-call
basis? That is, have the front-end emit a call to BUILT_IN_FOO and specify
that, for this call, errno doesn't have to be set?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24518


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