d5e99cc05e
- Library type instead of builtin - All C complex functions implemented Partial WIP: Needs more tests for edge cases.
27 lines
602 B
Zig
27 lines
602 B
Zig
const std = @import("../../index.zig");
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const debug = std.debug;
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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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pub fn log(z: var) Complex(@typeOf(z.re)) {
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const T = @typeOf(z.re);
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const r = cmath.abs(z);
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const phi = cmath.arg(z);
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return Complex(T).new(math.ln(r), phi);
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}
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const epsilon = 0.0001;
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test "complex.clog" {
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const a = Complex(f32).new(5, 3);
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const c = log(a);
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const re = c.re;
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const im = c.im;
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debug.assert(math.approxEq(f32, re, 1.763180, epsilon));
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debug.assert(math.approxEq(f32, im, 0.540419, epsilon));
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}
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