/*
|
* 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));
|
}
|
}
|
}
|
