pub const FRAC_PI_8: f64 = 0.39269908169872415480783042290993786f64
π/8
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/f64/consts/constant.FRAC_PI_8.html