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: int Main.f2int(float) instruction_simplifier (before)
    /// CHECK-DAG: <<Result:i\d+>> InvokeStaticOrDirect intrinsic:FloatFloatToIntBits
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: int Main.f2int(float) instruction_simplifier (after)
    // Note: The ArtMethod* (typed as int or long) is optional after sharpening.
    /// CHECK-DAG: <<Raw:i\d+>> InvokeStaticOrDirect [<<Arg:f\d+>>{{(,[ij]\d+)?}}] intrinsic:FloatFloatToRawIntBits
    /// CHECK-DAG: <<Cond:z\d+>> NotEqual [<<Arg>>,<<Arg>>]
    /// CHECK-DAG: <<Result:i\d+>> Select [<<Raw>>,{{i\d+}},<<Cond>>]
    /// CHECK-DAG: Return [<<Result>>]
    private static int f2int(float f) {
      return Float.floatToIntBits(f);
    }
  
    /// CHECK-START: long Main.d2long(double) instruction_simplifier (before)
    /// CHECK-DAG: <<Result:j\d+>> InvokeStaticOrDirect intrinsic:DoubleDoubleToLongBits
    /// CHECK-DAG: Return [<<Result>>]
    //
    /// CHECK-START: long Main.d2long(double) instruction_simplifier (after)
    // Note: The ArtMethod* (typed as int or long) is optional after sharpening.
    /// CHECK-DAG: <<Raw:j\d+>> InvokeStaticOrDirect [<<Arg:d\d+>>{{(,[ij]\d+)?}}] intrinsic:DoubleDoubleToRawLongBits
    /// CHECK-DAG: <<Cond:z\d+>> NotEqual [<<Arg>>,<<Arg>>]
    /// CHECK-DAG: <<Result:j\d+>> Select [<<Raw>>,{{j\d+}},<<Cond>>]
    /// CHECK-DAG: Return [<<Result>>]
    private static long d2long(double d) {
      return Double.doubleToLongBits(d);
    }
  
    public static void main(String args[]) {
      // A few distinct numbers.
      expectEquals32(0xff800000, f2int(Float.NEGATIVE_INFINITY));
      expectEquals32(0xbf800000, f2int(-1.0f));
      expectEquals32(0x80000000, f2int(-0.0f));
      expectEquals32(0x00000000, f2int(+0.0f));
      expectEquals32(0x3f800000, f2int(+1.0f));
      expectEquals32(0x7f800000, f2int(Float.POSITIVE_INFINITY));
  
      // A few others.
      for (int i = 0; i <= 100; i++) {
        expectEquals32(i, f2int(Float.intBitsToFloat(i)));
      }
  
      // A few NaN numbers.
      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++) {
        expectEquals32(0x7fc00000, f2int(fvals[i]));
      }
  
      // A few distinct numbers.
      expectEquals64(0xfff0000000000000L, d2long(Double.NEGATIVE_INFINITY));
      expectEquals64(0xbff0000000000000L, d2long(-1.0d));
      expectEquals64(0x8000000000000000L, d2long(-0.0d));
      expectEquals64(0x0000000000000000L, d2long(+0.0d));
      expectEquals64(0x3ff0000000000000L, d2long(+1.0d));
      expectEquals64(0x7ff0000000000000L, d2long(Double.POSITIVE_INFINITY));
  
      // A few others.
      for (long l = 0; l <= 100; l++) {
        expectEquals64(l, d2long(Double.longBitsToDouble(l)));
      }
  
      // A few NaN numbers.
      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++) {
        expectEquals64(0x7ff8000000000000L, d2long(dvals[i]));
      }
  
      System.out.println("passed");
    }
  
    private static void expectEquals32(int expected, int result) {
      if (expected != result) {
        throw new Error("Expected: "
            + Integer.toHexString(expected)
            + ", found: "
            + Integer.toHexString(result));
      }
    }
  
    private static void expectEquals64(long expected, long result) {
      if (expected != result) {
        throw new Error("Expected: "
            + Long.toHexString(expected)
            + ", found: "
            + Long.toHexString(result));
      }
    }
  }
  