Constant std::f32::consts::FRAC_PI_2
pub const FRAC_PI_2: f32 = 1.57079632679489661923132169163975144_f32; // 1.57079637f32π/2
© 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/f32/consts/constant.FRAC_PI_2.html