/*
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* Copyright (C) 2016 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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public class Main {
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/// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (before)
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/// CHECK-DAG: <<Result:z\d+>> InvokeStaticOrDirect
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/// CHECK-DAG: Return [<<Result>>]
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//
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/// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (after)
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/// CHECK-DAG: <<Result:z\d+>> NotEqual
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/// CHECK-DAG: Return [<<Result>>]
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//
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/// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static boolean isNaN32(float x) {
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return Float.isNaN(x);
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}
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/// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (before)
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/// CHECK-DAG: <<Result:z\d+>> InvokeStaticOrDirect
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/// CHECK-DAG: Return [<<Result>>]
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//
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/// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (after)
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/// CHECK-DAG: <<Result:z\d+>> NotEqual
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/// CHECK-DAG: Return [<<Result>>]
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//
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/// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (after)
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/// CHECK-NOT: InvokeStaticOrDirect
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private static boolean isNaN64(double x) {
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return Double.isNaN(x);
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}
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public static void main(String args[]) {
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// A few distinct numbers.
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expectFalse(isNaN32(Float.NEGATIVE_INFINITY));
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expectFalse(isNaN32(-1.0f));
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expectFalse(isNaN32(-0.0f));
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expectFalse(isNaN32(0.0f));
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expectFalse(isNaN32(1.0f));
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expectFalse(isNaN32(Float.POSITIVE_INFINITY));
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// A few distinct subnormal numbers.
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expectFalse(isNaN32(Float.intBitsToFloat(0x00400000)));
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expectFalse(isNaN32(Float.intBitsToFloat(0x80400000)));
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expectFalse(isNaN32(Float.intBitsToFloat(0x00000001)));
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expectFalse(isNaN32(Float.intBitsToFloat(0x80000001)));
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// A few NaN numbers.
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expectTrue(isNaN32(Float.NaN));
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expectTrue(isNaN32(0.0f / 0.0f));
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expectTrue(isNaN32((float)Math.sqrt(-1.0f)));
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float[] fvals = {
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Float.intBitsToFloat(0x7f800001),
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Float.intBitsToFloat(0x7fa00000),
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Float.intBitsToFloat(0x7fc00000),
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Float.intBitsToFloat(0x7fffffff),
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Float.intBitsToFloat(0xff800001),
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Float.intBitsToFloat(0xffa00000),
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Float.intBitsToFloat(0xffc00000),
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Float.intBitsToFloat(0xffffffff)
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};
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for (int i = 0; i < fvals.length; i++) {
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expectTrue(isNaN32(fvals[i]));
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}
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// A few distinct numbers.
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expectFalse(isNaN64(Double.NEGATIVE_INFINITY));
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expectFalse(isNaN32(-1.0f));
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expectFalse(isNaN64(-0.0d));
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expectFalse(isNaN64(0.0d));
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expectFalse(isNaN64(1.0d));
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expectFalse(isNaN64(Double.POSITIVE_INFINITY));
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// A few distinct subnormal numbers.
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expectFalse(isNaN64(Double.longBitsToDouble(0x0008000000000000l)));
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expectFalse(isNaN64(Double.longBitsToDouble(0x8008000000000000l)));
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expectFalse(isNaN64(Double.longBitsToDouble(0x0000000000000001l)));
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expectFalse(isNaN64(Double.longBitsToDouble(0x8000000000000001l)));
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// A few NaN numbers.
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expectTrue(isNaN64(Double.NaN));
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expectTrue(isNaN64(0.0d / 0.0d));
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expectTrue(isNaN64(Math.sqrt(-1.0d)));
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double[] dvals = {
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Double.longBitsToDouble(0x7ff0000000000001L),
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Double.longBitsToDouble(0x7ff4000000000000L),
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Double.longBitsToDouble(0x7ff8000000000000L),
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Double.longBitsToDouble(0x7fffffffffffffffL),
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Double.longBitsToDouble(0xfff0000000000001L),
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Double.longBitsToDouble(0xfff4000000000000L),
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Double.longBitsToDouble(0xfff8000000000000L),
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Double.longBitsToDouble(0xffffffffffffffffL)
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};
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for (int i = 0; i < dvals.length; i++) {
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expectTrue(isNaN64(dvals[i]));
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}
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System.out.println("passed");
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}
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private static void expectTrue(boolean value) {
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if (!value) {
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throw new Error("Expected True");
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}
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}
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private static void expectFalse(boolean value) {
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if (value) {
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throw new Error("Expected False");
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}
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}
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}
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