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export const description = `
Execution tests for the 'round' builtin function

S is abstract-float, f32, f16
T is S or vecN<S>
@const fn round(e: T) -> T
Result is the integer k nearest to e, as a floating point value.
When e lies halfway between integers k and k+1, the result is k when k is even,
and k+1 when k is odd.
Component-wise when T is a vector.
`;

import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { AllFeaturesMaxLimitsGPUTest } from '../../../../../gpu_test.js';
import { Type } from '../../../../../util/conversion.js';
import { allInputSources, onlyConstInputSource, run } from '../../expression.js';

import { abstractFloatBuiltin, builtin } from './builtin.js';
import { d } from './round.cache.js';

export const g = makeTestGroup(AllFeaturesMaxLimitsGPUTest);

g.test('abstract_float')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(`abstract float tests`)
  .params(u =>
    u
      .combine('inputSource', onlyConstInputSource)
      .combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    const cases = await d.get('abstract');
    await run(
      t,
      abstractFloatBuiltin('round'),
      [Type.abstractFloat],
      Type.abstractFloat,
      t.params,
      cases
    );
  });

g.test('f32')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(`f32 tests`)
  .params(u =>
    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    const cases = await d.get('f32');
    await run(t, builtin('round'), [Type.f32], Type.f32, t.params, cases);
  });

g.test('f16')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(`f16 tests`)
  .params(u =>
    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    t.skipIfDeviceDoesNotHaveFeature('shader-f16');
    const cases = await d.get('f16');
    await run(t, builtin('round'), [Type.f16], Type.f16, t.params, cases);
  });