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
<mailto: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 <mailto: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
_______________________________________________
Rust-dev mailing list
Rust-dev@mozilla.org
https://mail.mozilla.org/listinfo/rust-dev
