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f5e46c9bf2
This looks like a massive PR, but it's only a move from cli/tests -> tests, and updates of relative paths for files. This is the first step towards aggregate all of the integration test files under tests/, which will lead to a set of integration tests that can run without the CLI binary being built. While we could leave these tests under `cli`, it would require us to keep a more complex directory structure for the various test runners. In addition, we have a lot of complexity to ignore various test files in the `cli` project itself (cargo publish exclusion rules, autotests = false, etc). And finally, the `tests/` folder will eventually house the `test_ffi`, `test_napi` and other testing code, reducing the size of the root repo directory. For easier review, the extremely large and noisy "move" is in the first commit (with no changes -- just a move), while the remainder of the changes to actual files is in the second commit.
38 lines
1.1 KiB
WebGPU Shading Language
38 lines
1.1 KiB
WebGPU Shading Language
@group(0)
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@binding(0)
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var<storage, read_write> v_indices: array<u32>; // this is used as both input and output for convenience
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// The Collatz Conjecture states that for any integer n:
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// If n is even, n = n/2
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// If n is odd, n = 3n+1
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// And repeat this process for each new n, you will always eventually reach 1.
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// Though the conjecture has not been proven, no counterexample has ever been found.
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// This function returns how many times this recurrence needs to be applied to reach 1.
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fn collatz_iterations(n_base: u32) -> u32{
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var n: u32 = n_base;
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var i: u32 = 0u;
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loop {
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if (n <= 1u) {
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break;
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}
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if (n % 2u == 0u) {
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n = n / 2u;
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}
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else {
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// Overflow? (i.e. 3*n + 1 > 0xffffffffu?)
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if (n >= 1431655765u) { // 0x55555555u
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return 4294967295u; // 0xffffffffu
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}
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n = 3u * n + 1u;
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}
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i = i + 1u;
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}
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return i;
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}
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@compute
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@workgroup_size(1)
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fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
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v_indices[global_id.x] = collatz_iterations(v_indices[global_id.x]);
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}
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