Files
zig/lib/std/math/complex/tan.zig
Ryan Liptak 16b3d1004e Remove redundant test name prefixes now that test names are fully qualified
Follow up to #19079, which made test names fully qualified.

This fixes tests that now-redundant information in their test names. For example here's a fully qualified test name before the changes in this commit:

"priority_queue.test.std.PriorityQueue: shrinkAndFree"

and the same test's name after the changes in this commit:

"priority_queue.test.shrinkAndFree"
2024-02-26 15:18:31 -08:00

24 lines
636 B
Zig

const std = @import("../../std.zig");
const testing = std.testing;
const math = std.math;
const cmath = math.complex;
const Complex = cmath.Complex;
/// Returns the tangent of z.
pub fn tan(z: anytype) Complex(@TypeOf(z.re, z.im)) {
const T = @TypeOf(z.re, z.im);
const q = Complex(T).init(-z.im, z.re);
const r = cmath.tanh(q);
return Complex(T).init(r.im, -r.re);
}
const epsilon = 0.0001;
test "tan" {
const a = Complex(f32).init(5, 3);
const c = tan(a);
try testing.expect(math.approxEqAbs(f32, c.re, -0.002708233, epsilon));
try testing.expect(math.approxEqAbs(f32, c.im, 1.004165, epsilon));
}