core::f64::consts::FRAC_PI_2   
            
                [−]
            
        [src]
pub const FRAC_PI_2: f64=1.57079632679489661923132169163975144_f64
pi/2.0
pub const FRAC_PI_2: f64=1.57079632679489661923132169163975144_f64
pi/2.0
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