pub const FRAC_2_PI: f128 = 0.636619772367581343075535053490057448137838582961825794990669_f128; // 0.636619772367581343075535053490057474f128
f128 #116909)
2/π
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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/f128/consts/constant.FRAC_2_PI.html