79 lines
2.2 KiB
JavaScript
79 lines
2.2 KiB
JavaScript
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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function Module(stdlib) {
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"use asm";
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var max = stdlib.Math.max;
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var fround = stdlib.Math.fround;
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// f: double, double -> double
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function f(a, b) {
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a = +a; b = +b;
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return +max(a, b);
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}
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// g: signed, signed -> signed
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function g(a, b) {
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a = a | 0; b = b | 0;
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return max(a >> 0, b >> 0) | 0;
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}
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// h: float, float -> float
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function h(a, b) {
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a = fround(a); b = fround(b);
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return fround(max(a, b));
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}
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return { f: f, g: g, h: h };
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}
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var m = Module({ Math: Math });
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var f = m.f;
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var g = m.g;
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var h = m.h;
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assertTrue(isNaN(f(0, NaN)));
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assertFalse(isFinite(f(0, Infinity)));
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assertTrue(isFinite(f(0, -Infinity)));
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assertTrue(Object.is(+0, f(-0, +0)));
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assertTrue(Object.is(+0, f(+0, -0)));
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assertEquals(0.1, f( 0, 0.1));
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assertEquals(0.5, f( 0.1, 0.5));
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assertEquals(0.5, f( 0.5, -0.1));
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assertEquals(-0.1, f(-0.1, -0.5));
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assertEquals(1, f(-0.5, 1));
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assertEquals(1.1, f( 1, 1.1));
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assertEquals(1.1, f( 1.1, -1));
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assertEquals(-1, f(-1, -1.1));
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assertEquals(0, f(-1.1, 0));
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assertEquals( 1, g( 0, 1));
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assertEquals( 5, g( 1, 5));
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assertEquals( 5, g( 5, -1));
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assertEquals(-1, g(-1, -5));
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assertEquals( 1, g(-5, 1));
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assertEquals( 1, g( 1, -1));
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assertEquals( 0, g(-1, 0));
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assertEquals(Math.fround(0.1), h( 0, 0.1));
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assertEquals(Math.fround(0.5), h( 0.1, 0.5));
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assertEquals(Math.fround(0.5), h( 0.5, -0.1));
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assertEquals(Math.fround(-0.1), h(-0.1, -0.5));
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assertEquals(Math.fround(1), h(-0.5, 1));
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assertEquals(Math.fround(1.1), h( 1, 1.1));
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assertEquals(Math.fround(1.1), h( 1.1, -1));
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assertEquals(Math.fround(-1), h(-1, -1.1));
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assertEquals(Math.fround(0), h(-1.1, 0));
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assertEquals(1, g(0, Number.MIN_SAFE_INTEGER));
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assertEquals(0, g(0, Number.MAX_SAFE_INTEGER));
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assertEquals(Number.MAX_VALUE, f(Number.MIN_VALUE, Number.MAX_VALUE));
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assertEquals(Number.MAX_VALUE, f(Number.MAX_VALUE, Number.MIN_VALUE));
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assertEquals(Number.POSITIVE_INFINITY, f(Number.POSITIVE_INFINITY, 0));
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assertEquals(0, f(Number.NEGATIVE_INFINITY, 0));
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