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export const description = `
Execution tests for the 'ldexp' builtin function
S is AbstractFloat, f32, f16
T is S or vecN<S>
K is AbstractInt, i32
I is K or vecN<K>, where
I is a scalar if T is a scalar, or a vector when T is a vector
@const fn ldexp(e1: T ,e2: I ) -> T
Returns e1 * 2^e2. 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 { f32, i32, TypeF32, TypeI32 } from '../../../../../util/conversion.js';
import { ldexpInterval } from '../../../../../util/f32_interval.js';
import {
biasedRange,
fullF32Range,
fullI32Range,
quantizeToF32,
quantizeToI32,
} 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);
const makeCase = (e1: number, e2: number): Case => {
// Due to the heterogeneous types of the params to ldexp (f32 & i32),
// makeBinaryToF32IntervalCase cannot be used here.
e1 = quantizeToF32(e1);
e2 = quantizeToI32(e2);
const expected = ldexpInterval(e1, e2);
return { input: [f32(e1), i32(e2)], expected };
};
export const d = makeCaseCache('ldexp', {
f32_non_const: () => {
const cases: Array<Case> = [];
fullF32Range().forEach(e1 => {
fullI32Range().forEach(e2 => {
cases.push(makeCase(e1, e2));
});
});
return cases;
},
f32_const: () => {
const cases: Array<Case> = [];
fullF32Range().forEach(e1 => {
biasedRange(-128, 128, 10).forEach(e2 => {
const val = e1 * Math.pow(2, e2);
if (val >= kValue.f32.negative.min && val <= kValue.f32.positive.max) {
cases.push(makeCase(e1, e2));
}
});
});
return cases;
},
});
g.test('abstract_float')
.specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
.desc(
`
`
)
.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(t.params.inputSource === 'const' ? 'f32_const' : 'f32_non_const');
await run(t, builtin('ldexp'), [TypeF32, TypeI32], 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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