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export const description = `
Execution tests for the 'step' builtin function
S is AbstractFloat, f32, f16
T is S or vecN<S>
@const fn step(edge: T ,x: T ) -> T
Returns 1.0 if edge ≤ x, and 0.0 otherwise. Component-wise when T is a vector.
`;
import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../../gpu_test.js';
import { anyOf } from '../../../../../util/compare.js';
import { f32, TypeF32 } from '../../../../../util/conversion.js';
import { stepInterval, toF32Interval } from '../../../../../util/f32_interval.js';
import { fullF32Range, quantizeToF32 } from '../../../../../util/math.js';
import { makeCaseCache } from '../../case_cache.js';
import { allInputSources, Case, run } from '../../expression.js';
import { builtin } from './builtin.js';
export const g = makeTestGroup(GPUTest);
export const d = makeCaseCache('step', {
f32: () => {
const zeroInterval = toF32Interval(0);
const oneInterval = toF32Interval(1);
// stepInterval's return value isn't always interpreted as an acceptance
// interval, so makeBinaryToF32IntervalCase cannot be used here.
// See the comment block on stepInterval for more details
const makeCase = (edge: number, x: number): Case => {
edge = quantizeToF32(edge);
x = quantizeToF32(x);
const expected = stepInterval(edge, x);
// [0, 0], [1, 1], or [-∞, +∞] cases
if (expected.isPoint() || !expected.isFinite()) {
return { input: [f32(edge), f32(x)], expected };
}
// [0, 1] case
return {
input: [f32(edge), f32(x)],
expected: anyOf(zeroInterval, oneInterval),
};
};
const range = fullF32Range();
const cases: Array<Case> = [];
range.forEach(edge => {
range.forEach(x => {
cases.push(makeCase(edge, x));
});
});
return cases;
},
});
g.test('abstract_float')
.specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
.desc(`abstract float tests`)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.unimplemented();
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('step'), [TypeF32, TypeF32], TypeF32, 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)
)
.unimplemented();
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