use crate::consts::{D2PI, DPI};

use std::ops::Rem;

/// Normalize angle into the range -pi <= a < +pi.

#[inline]

pub fn anpm(a: f64) -> f64 {

    let mut w = a.rem(D2PI);

    if w.abs() >= DPI {

        w -= D2PI;

    }

    w

}