Ok, thanks! > On 04 Jan 2015, at 17:57, Philippe Daouadi <blastro...@free.fr> wrote: > > If you want a generic pi, you should use the one in the Float trait > > If you have > let x : f64 = ...; > x * Float::pi() will resolve to f64 pi > > Philippe > > On 01/04/2015 05:21 PM, Manish Goregaokar wrote: >> We have two types of floats, there is a Pi of both precision levels. I don't >> think it's anything more than that. You should be able to cast between the >> two, but that's it I guess. Rust tries to give explicit control over such >> things. >> >> There is a Float trait (might have been renamed) if you want to use generics. >> >> -Manish Goregaokar >> >> On Sun, Jan 4, 2015 at 3:07 PM, Pim Schellart <p.schell...@gmail.com> wrote: >> Dear Rust Developers, >> >> here is another ignorant question so feel free to ignore. >> When reading the guide I came across "std::f64::consts::PI” for pi. Now I >> was wondering why there are separate constants defined for 32 and 64 bit >> floats and how this will work with generics. Do you always have to define >> two functions to work on f32 and f64 or is std::f64::consts::PI cast down to >> f32 in an equation with 32 bit variables? Is there also a general `typeless’ >> PI (or other fundamental constants), as in Go for example? >> >> Kind Regards, >> >> Pim >> _______________________________________________ >> Rust-dev mailing list >> Rust-dev@mozilla.org >> https://mail.mozilla.org/listinfo/rust-dev >> >> >> >> _______________________________________________ >> Rust-dev mailing list >> >> Rust-dev@mozilla.org >> https://mail.mozilla.org/listinfo/rust-dev >
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