zig/std/math/complex/proj.zig
Andrew Kelley c2db077574
std.debug.assert: remove special case for test builds
Previously, std.debug.assert would `@panic` in test builds,
if the assertion failed. Now, it's always `unreachable`.

This makes release mode test builds more accurately test
the actual code that will be run.

However this requires tests to call `std.testing.expect`
rather than `std.debug.assert` to make sure output is correct.

Here is the explanation of when to use either one, copied from
the assert doc comments:

Inside a test block, it is best to use the `std.testing` module
rather than assert, because assert may not detect a test failure
in ReleaseFast and ReleaseSafe mode. Outside of a test block, assert
is the correct function to use.

closes #1304
2019-02-08 18:23:38 -05:00

25 lines
552 B
Zig

const std = @import("../../index.zig");
const testing = std.testing;
const math = std.math;
const cmath = math.complex;
const Complex = cmath.Complex;
pub fn proj(z: var) Complex(@typeOf(z.re)) {
const T = @typeOf(z.re);
if (math.isInf(z.re) or math.isInf(z.im)) {
return Complex(T).new(math.inf(T), math.copysign(T, 0, z.re));
}
return Complex(T).new(z.re, z.im);
}
const epsilon = 0.0001;
test "complex.cproj" {
const a = Complex(f32).new(5, 3);
const c = proj(a);
testing.expect(c.re == 5 and c.im == 3);
}