Zig 0.17.0-dev (Split by item)

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atan64

atan.atan64

fn atan64(z: Complex(f64)) Complex(f64)

File

lib/std/math/complex/atan.zig:73

Code

fn atan64(z: Complex(f64)) Complex(f64) {
    const x = z.re;
    const y = z.im;

    const x2 = x * x;
    var a = 1.0 - x2 - (y * y);

    var t = 0.5 * math.atan2(2.0 * x, a);
    const w = redupif64(t);

    t = y - 1.0;
    a = x2 + t * t;

    t = y + 1.0;
    a = (x2 + (t * t)) / a;
    return Complex(f64).init(w, 0.25 * @log(a));
}