The friendship between Haskell and C

Re:The friendship between Haskell and C by mhh__ on Friday March 17, 2023 @11:36AM (#35198460)

errno can be set upon failure, and also the behaviour is dependant on the global floating point environment (although passing this around with you would be rather cumbersome)

[ Parent | on HN ]

Re:The friendship between Haskell and C by dllthomas on Friday March 17, 2023 @07:04PM (#35204066)

> errno can be set upon failure

... can it? I don't see it in the man page. The rest is a good point, either way, though.

[ Parent | on HN ]

Re:The friendship between Haskell and C by mhh__ on Friday March 17, 2023 @10:07PM (#35205347)

I don't know the exact wording in the standard but take a look at/around the GCC flag -fno-math-errno for example

[ Parent | on HN ]

Re:The friendship between Haskell and C by dllthomas on Friday March 17, 2023 @11:04PM (#35205641)

Ah, checked a man page on a Mac, where it never sets errno (according to the gcc docs). It's mentioned in the man page on my linux box here.

[ Parent | on HN ]