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/**
* AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
**/export const description = `
Execution tests for the 'log2' builtin function
S is AbstractFloat, f32, f16
T is S or vecN<S>
@const fn log2(e: T ) -> T
Returns the base-2 logarithm of e. Component-wise when T is a vector.
`;import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../../gpu_test.js';
import { kValue } from '../../../../../util/constants.js';
import { TypeF32, TypeF16 } from '../../../../../util/conversion.js';
import { FP } from '../../../../../util/floating_point.js';
import { biasedRange, fullF32Range, fullF16Range, linearRange } from '../../../../../util/math.js';
import { makeCaseCache } from '../../case_cache.js';
import { allInputSources, run } from '../../expression.js';
import { builtin } from './builtin.js';
export const g = makeTestGroup(GPUTest);
// log2's accuracy is defined in three regions { [0, 0.5), [0.5, 2.0], (2.0, +∞] }
const f32_inputs = [
...linearRange(kValue.f32.positive.min, 0.5, 20),
...linearRange(0.5, 2.0, 20),
...biasedRange(2.0, 2 ** 32, 1000),
...fullF32Range()];
const f16_inputs = [
...linearRange(kValue.f16.positive.min, 0.5, 20),
...linearRange(0.5, 2.0, 20),
...biasedRange(2.0, 2 ** 32, 1000),
...fullF16Range()];
export const d = makeCaseCache('log2', {
f32_const: () => {
return FP.f32.generateScalarToIntervalCases(f32_inputs, 'finite', FP.f32.log2Interval);
},
f32_non_const: () => {
return FP.f32.generateScalarToIntervalCases(f32_inputs, 'unfiltered', FP.f32.log2Interval);
},
f16_const: () => {
return FP.f16.generateScalarToIntervalCases(f16_inputs, 'finite', FP.f16.log2Interval);
},
f16_non_const: () => {
return FP.f16.generateScalarToIntervalCases(f16_inputs, 'unfiltered', FP.f16.log2Interval);
}
});
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])
).
unimplemented();
g.test('f32').
specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions').
desc(
`
f32 tests
TODO(#792): Decide what the ground-truth is for these tests. [1]
`
).
params((u) =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4])
).
fn(async (t) => {
const cases = await d.get(t.params.inputSource === 'const' ? 'f32_const' : 'f32_non_const');
await run(t, builtin('log2'), [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])
).
beforeAllSubcases((t) => {
t.selectDeviceOrSkipTestCase('shader-f16');
}).
fn(async (t) => {
const cases = await d.get(t.params.inputSource === 'const' ? 'f16_const' : 'f16_non_const');
await run(t, builtin('log2'), [TypeF16], TypeF16, t.params, cases);
});
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