18 lines
458 B
Zig
18 lines
458 B
Zig
const std = @import("../../std.zig");
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const testing = std.testing;
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const math = std.math;
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const cmath = math.complex;
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const Complex = cmath.Complex;
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/// Returns the angular component (in radians) of z.
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pub fn arg(z: anytype) @TypeOf(z.re, z.im) {
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return math.atan2(z.im, z.re);
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}
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test arg {
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const epsilon = math.floatEps(f32);
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const a = Complex(f32).init(5, 3);
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const c = arg(a);
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try testing.expectApproxEqAbs(0.5404195, c, epsilon);
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}
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