std::f64::consts::FRAC_PI_4   
            
                [−]
            
        [src]
pub const FRAC_PI_4: f64=0.785398163397448309615660845819875721f64
pi/4.0
pub const FRAC_PI_4: f64=0.785398163397448309615660845819875721f64
pi/4.0
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