Function argumentCasting

test/features/add-custom-native-function.js:120–151

(mode)

describe('features: argument casting');

function argumentCasting(mode) {
  const gpu = new GPU({
    mode,
    functions: [divide],
    nativeFunctions: [{
      // deliberately add, rather than divide, to ensure native functions are treated as more important than regular ones
      name: 'divide',
      source: `float divide(int a, int b) {
        return float(a + b);
      }`
    }]
  });

  function divide(a,b) {
    return a / b;
  }

  const kernel = gpu.createKernel(function(a, b) {
    return divide(a[this.thread.x], b[this.thread.x]);
  }, {
    output : [6]
  });

  const a = [1, 4, 3, 5, 6, 3];
  const b = [4, 2, 6, 1, 2, 3];

  const res = kernel(a,b);
  const exp = [5, 6, 9, 6, 8, 6];

  assert.deepEqual(Array.from(res), exp);
  gpu.destroy();
}

test('argumentCasting (GPU only) auto', () => {
  argumentCasting(null);