Constant creusot_contracts::std::f128::consts::FRAC_PI_4

pub const FRAC_PI_4: f128 = 0.785398163397448309615660845819875721049292349843776455243736_f128; // 0.785398163397448309615660845819875699f128

🔬This is a nightly-only experimental API. (f128)

π/4