Constant TANH 

pub const TANH: &str = "\
struct Dims { N: u32 }
var<push_constant> dims: Dims;

@group(0) @binding(0) var<storage, read> input: array<f32>;
@group(0) @binding(1) var<storage, read_write> out: array<f32>;

@compute @workgroup_size(256)
fn main(@builtin(global_invocation_id) gid: vec3<u32>) {
    let i = gid.x;
    if i >= dims.N { return; }
    out[i] = tanh(input[i]);
}";

Tanh activation: out[i] = tanh(in[i]).

Push constants: struct Dims { N: u32 } (4 bytes) Workgroup size: 256 — dispatch N invocations Bindings:

• @binding(0) input: array<f32> (read)
• @binding(1) out: array<f32> (read_write)