Constant std::f32::consts::FRAC_PI_4
pub const FRAC_PI_4: f32 = 0.785398163397448309615660845819875721f32; // 0.785398185f32
π/4
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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_4.html