content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  public class Main {
  
    /// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (before)
    /// CHECK-DAG: <<Result:z\d+>> InvokeStaticOrDirect
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (after)
    /// CHECK-DAG: <<Result:z\d+>> NotEqual
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: boolean Main.isNaN32(float) instruction_simplifier (after)
    /// CHECK-NOT: InvokeStaticOrDirect
    private static boolean isNaN32(float x) {
      return Float.isNaN(x);
    }
  
    /// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (before)
    /// CHECK-DAG: <<Result:z\d+>> InvokeStaticOrDirect
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (after)
    /// CHECK-DAG: <<Result:z\d+>> NotEqual
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: boolean Main.isNaN64(double) instruction_simplifier (after)
    /// CHECK-NOT: InvokeStaticOrDirect
    private static boolean isNaN64(double x) {
      return Double.isNaN(x);
    }
  
    public static void main(String args[]) {
      // A few distinct numbers.
      expectFalse(isNaN32(Float.NEGATIVE_INFINITY));
      expectFalse(isNaN32(-1.0f));
      expectFalse(isNaN32(-0.0f));
      expectFalse(isNaN32(0.0f));
      expectFalse(isNaN32(1.0f));
      expectFalse(isNaN32(Float.POSITIVE_INFINITY));
  
      // A few distinct subnormal numbers.
      expectFalse(isNaN32(Float.intBitsToFloat(0x00400000)));
      expectFalse(isNaN32(Float.intBitsToFloat(0x80400000)));
      expectFalse(isNaN32(Float.intBitsToFloat(0x00000001)));
      expectFalse(isNaN32(Float.intBitsToFloat(0x80000001)));
  
      // A few NaN numbers.
      expectTrue(isNaN32(Float.NaN));
      expectTrue(isNaN32(0.0f / 0.0f));
      expectTrue(isNaN32((float)Math.sqrt(-1.0f)));
      float[] fvals = {
        Float.intBitsToFloat(0x7f800001),
        Float.intBitsToFloat(0x7fa00000),
        Float.intBitsToFloat(0x7fc00000),
        Float.intBitsToFloat(0x7fffffff),
        Float.intBitsToFloat(0xff800001),
        Float.intBitsToFloat(0xffa00000),
        Float.intBitsToFloat(0xffc00000),
        Float.intBitsToFloat(0xffffffff)
      };
      for (int i = 0; i < fvals.length; i++) {
        expectTrue(isNaN32(fvals[i]));
      }
  
      // A few distinct numbers.
      expectFalse(isNaN64(Double.NEGATIVE_INFINITY));
      expectFalse(isNaN32(-1.0f));
      expectFalse(isNaN64(-0.0d));
      expectFalse(isNaN64(0.0d));
      expectFalse(isNaN64(1.0d));
      expectFalse(isNaN64(Double.POSITIVE_INFINITY));
  
      // A few distinct subnormal numbers.
      expectFalse(isNaN64(Double.longBitsToDouble(0x0008000000000000l)));
      expectFalse(isNaN64(Double.longBitsToDouble(0x8008000000000000l)));
      expectFalse(isNaN64(Double.longBitsToDouble(0x0000000000000001l)));
      expectFalse(isNaN64(Double.longBitsToDouble(0x8000000000000001l)));
  
      // A few NaN numbers.
      expectTrue(isNaN64(Double.NaN));
      expectTrue(isNaN64(0.0d / 0.0d));
      expectTrue(isNaN64(Math.sqrt(-1.0d)));
      double[] dvals = {
        Double.longBitsToDouble(0x7ff0000000000001L),
        Double.longBitsToDouble(0x7ff4000000000000L),
        Double.longBitsToDouble(0x7ff8000000000000L),
        Double.longBitsToDouble(0x7fffffffffffffffL),
        Double.longBitsToDouble(0xfff0000000000001L),
        Double.longBitsToDouble(0xfff4000000000000L),
        Double.longBitsToDouble(0xfff8000000000000L),
        Double.longBitsToDouble(0xffffffffffffffffL)
      };
      for (int i = 0; i < dvals.length; i++) {
        expectTrue(isNaN64(dvals[i]));
      }
  
      System.out.println("passed");
    }
  
    private static void expectTrue(boolean value) {
      if (!value) {
        throw new Error("Expected True");
      }
    }
  
    private static void expectFalse(boolean value) {
      if (value) {
        throw new Error("Expected False");
      }
    }
  }
  