JSTests/wasm/stress/trunc-int-min-minus-one.js

import { instantiate } from "../wabt-wrapper.js";
import * as assert from "../assert.js";

async function test() {
    const instance = await instantiate(`
        (module
         (func (export "truncS") (param f64) (result i32) (local $l0 f64)
           (i32.trunc_f64_s (local.get 0))
         )
         (func (export "truncU") (param f64) (result i32) (local $l0 f64)
           (i32.trunc_f64_u (local.get 0))
         )
        )
    `)
    const {truncS, truncU} = instance.exports;

    assert.eq(truncS(-2147483648.1), -2147483648);
    assert.eq(truncS(-2147483648.9), -2147483648);
    assert.eq(truncS(2147483647.9), 2147483647);
    assert.throws(() => truncS(-2147483649), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);
    assert.throws(() => truncS(2147483648), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);
    assert.throws(() => truncS(NaN), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);

    assert.eq(truncU(-0.9), 0);
    assert.eq(truncU(4294967295.9), -1);
    assert.throws(() => truncU(-1), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);
    assert.throws(() => truncU(4294967296), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);
    assert.throws(() => truncU(NaN), WebAssembly.RuntimeError, `Out of bounds Trunc operation (evaluating 'func(...args)')`);
}

assert.asyncTest(test());