254 lines
8.4 KiB
Java
254 lines
8.4 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Note that $opt$ is a marker for the optimizing compiler to test
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// it does compile the method.
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public class Main {
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public static void expectEquals(int expected, int result) {
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if (expected != result) {
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throw new Error("Expected: " + expected + ", found: " + result);
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}
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}
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public static void expectEquals(long expected, long result) {
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if (expected != result) {
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throw new Error("Expected: " + expected + ", found: " + result);
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}
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}
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public static void expectEquals(float expected, float result) {
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if (expected != result) {
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throw new Error("Expected: " + expected + ", found: " + result);
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}
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}
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public static void expectEquals(double expected, double result) {
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if (expected != result) {
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throw new Error("Expected: " + expected + ", found: " + result);
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}
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}
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public static void expectApproxEquals(float a, float b) {
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float maxDelta = 0.00001F;
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boolean aproxEquals = (a > b) ? ((a - b) < maxDelta) : ((b - a) < maxDelta);
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if (!aproxEquals) {
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throw new Error("Expected: " + a + ", found: " + b
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+ ", with delta: " + maxDelta + " " + (a - b));
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}
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}
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public static void expectApproxEquals(double a, double b) {
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double maxDelta = 0.00001D;
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boolean aproxEquals = (a > b) ? ((a - b) < maxDelta) : ((b - a) < maxDelta);
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if (!aproxEquals) {
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throw new Error("Expected: " + a + ", found: "
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+ b + ", with delta: " + maxDelta + " " + (a - b));
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}
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}
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public static void expectNaN(float a) {
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if (a == a) {
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throw new Error("Expected NaN: " + a);
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}
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}
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public static void expectNaN(double a) {
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if (a == a) {
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throw new Error("Expected NaN: " + a);
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}
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}
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public static void expectDivisionByZero(int value) {
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try {
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$opt$Div(value, 0);
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throw new Error("Expected RuntimeException when dividing by 0");
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} catch (java.lang.RuntimeException e) {
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}
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try {
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$opt$DivZero(value);
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throw new Error("Expected RuntimeException when dividing by 0");
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} catch (java.lang.RuntimeException e) {
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}
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}
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public static void expectDivisionByZero(long value) {
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try {
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$opt$Div(value, 0L);
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throw new Error("Expected RuntimeException when dividing by 0");
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} catch (java.lang.RuntimeException e) {
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}
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try {
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$opt$DivZero(value);
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throw new Error("Expected RuntimeException when dividing by 0");
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} catch (java.lang.RuntimeException e) {
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}
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}
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public static void main(String[] args) {
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div();
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}
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public static void div() {
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divInt();
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divLong();
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divFloat();
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divDouble();
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}
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private static void divInt() {
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expectEquals(2, $opt$DivConst(6));
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expectEquals(2, $opt$Div(6, 3));
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expectEquals(6, $opt$Div(6, 1));
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expectEquals(-2, $opt$Div(6, -3));
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expectEquals(1, $opt$Div(4, 3));
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expectEquals(-1, $opt$Div(4, -3));
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expectEquals(5, $opt$Div(23, 4));
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expectEquals(-5, $opt$Div(-23, 4));
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expectEquals(-Integer.MAX_VALUE, $opt$Div(Integer.MAX_VALUE, -1));
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expectEquals(Integer.MIN_VALUE, $opt$Div(Integer.MIN_VALUE, -1)); // overflow
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expectEquals(-1073741824, $opt$Div(Integer.MIN_VALUE, 2));
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expectEquals(0, $opt$Div(0, Integer.MAX_VALUE));
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expectEquals(0, $opt$Div(0, Integer.MIN_VALUE));
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expectDivisionByZero(0);
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expectDivisionByZero(1);
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expectDivisionByZero(Integer.MAX_VALUE);
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expectDivisionByZero(Integer.MIN_VALUE);
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}
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private static void divLong() {
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expectEquals(2L, $opt$DivConst(6L));
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expectEquals(2L, $opt$Div(6L, 3L));
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expectEquals(6L, $opt$Div(6L, 1L));
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expectEquals(-2L, $opt$Div(6L, -3L));
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expectEquals(1L, $opt$Div(4L, 3L));
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expectEquals(-1L, $opt$Div(4L, -3L));
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expectEquals(5L, $opt$Div(23L, 4L));
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expectEquals(-5L, $opt$Div(-23L, 4L));
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expectEquals(-Integer.MAX_VALUE, $opt$Div(Integer.MAX_VALUE, -1L));
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expectEquals(2147483648L, $opt$Div(Integer.MIN_VALUE, -1L));
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expectEquals(-1073741824L, $opt$Div(Integer.MIN_VALUE, 2L));
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expectEquals(-Long.MAX_VALUE, $opt$Div(Long.MAX_VALUE, -1L));
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expectEquals(Long.MIN_VALUE, $opt$Div(Long.MIN_VALUE, -1L)); // overflow
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expectEquals(11111111111111L, $opt$Div(33333333333333L, 3L));
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expectEquals(3L, $opt$Div(33333333333333L, 11111111111111L));
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expectEquals(0L, $opt$Div(0L, Long.MAX_VALUE));
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expectEquals(0L, $opt$Div(0L, Long.MIN_VALUE));
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expectDivisionByZero(0L);
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expectDivisionByZero(1L);
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expectDivisionByZero(Long.MAX_VALUE);
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expectDivisionByZero(Long.MIN_VALUE);
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}
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private static void divFloat() {
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expectApproxEquals(1.6666666F, $opt$Div(5F, 3F));
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expectApproxEquals(0F, $opt$Div(0F, 3F));
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expectApproxEquals(-0.3333333F, $opt$Div(1F, -3F));
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expectApproxEquals(4F, $opt$Div(-12F, -3F));
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expectApproxEquals(0.5, $opt$Div(0.1F, 0.2F));
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expectApproxEquals(-2.5F, $opt$Div(-0.5F, 0.2F));
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expectEquals(0F, $opt$Div(0F, Float.POSITIVE_INFINITY));
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expectEquals(0F, $opt$Div(11F, Float.POSITIVE_INFINITY));
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expectEquals(0F, $opt$Div(0F, Float.NEGATIVE_INFINITY));
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expectEquals(0F, $opt$Div(11F, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(0F, 0F));
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expectNaN($opt$Div(Float.NaN, 11F));
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expectNaN($opt$Div(-11F, Float.NaN));
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expectNaN($opt$Div(Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY));
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expectNaN($opt$Div(Float.NaN, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.NaN));
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expectEquals(Float.POSITIVE_INFINITY, $opt$Div(3F, 0F));
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expectEquals(Float.NEGATIVE_INFINITY, $opt$Div(-3F, 0F));
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expectEquals(Float.POSITIVE_INFINITY, $opt$Div(Float.MAX_VALUE, Float.MIN_VALUE));
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expectEquals(Float.NEGATIVE_INFINITY, $opt$Div(-Float.MAX_VALUE, Float.MIN_VALUE));
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}
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private static void divDouble() {
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expectApproxEquals(1.6666666D, $opt$Div(5D, 3D));
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expectApproxEquals(0D, $opt$Div(0D, 3D));
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expectApproxEquals(-0.3333333D, $opt$Div(1D, -3D));
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expectApproxEquals(4D, $opt$Div(-12D, -3D));
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expectApproxEquals(0.5, $opt$Div(0.1D, 0.2D));
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expectApproxEquals(-2.5D, $opt$Div(-0.5D, 0.2D));
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expectEquals(0D, $opt$Div(0D, Float.POSITIVE_INFINITY));
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expectEquals(0D, $opt$Div(11D, Float.POSITIVE_INFINITY));
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expectEquals(0D, $opt$Div(0D, Float.NEGATIVE_INFINITY));
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expectEquals(0D, $opt$Div(11D, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(0D, 0D));
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expectNaN($opt$Div(Float.NaN, 11D));
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expectNaN($opt$Div(-11D, Float.NaN));
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expectNaN($opt$Div(Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY));
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expectNaN($opt$Div(Float.NaN, Float.NEGATIVE_INFINITY));
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expectNaN($opt$Div(Float.POSITIVE_INFINITY, Float.NaN));
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expectEquals(Float.POSITIVE_INFINITY, $opt$Div(3D, 0D));
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expectEquals(Float.NEGATIVE_INFINITY, $opt$Div(-3D, 0D));
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expectEquals(Float.POSITIVE_INFINITY, $opt$Div(Float.MAX_VALUE, Float.MIN_VALUE));
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expectEquals(Float.NEGATIVE_INFINITY, $opt$Div(-Float.MAX_VALUE, Float.MIN_VALUE));
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}
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static int $opt$Div(int a, int b) {
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return a / b;
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}
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static int $opt$DivZero(int a) {
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return a / 0;
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}
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// Division by literals != 0 should not generate checks.
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static int $opt$DivConst(int a) {
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return a / 3;
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}
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static long $opt$DivConst(long a) {
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return a / 3L;
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}
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static long $opt$Div(long a, long b) {
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return a / b;
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}
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static long $opt$DivZero(long a) {
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return a / 0L;
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}
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static float $opt$Div(float a, float b) {
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return a / b;
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}
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static double $opt$Div(double a, double b) {
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return a / b;
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}
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}
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