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/*
* Copyright (C) 2008 The Guava Authors
*
* 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.
*/
package org.glassfish.jersey.internal.guava;
import java.util.Arrays;
/**
* Static utility methods pertaining to {@code int} primitives, that are not
* already found in either {@link Integer} or {@link Arrays}.
*
*
See the Guava User Guide article on
* primitive utilities.
*
* @author Kevin Bourrillion
* @since 1.0
*/
final class Ints {
/**
* The largest power of two that can be represented as an {@code int}.
*
* @since 10.0
*/
public static final int MAX_POWER_OF_TWO = 1 << (Integer.SIZE - 2);
private static final byte[] asciiDigits = new byte[128];
static {
Arrays.fill(asciiDigits, (byte) -1);
for (int i = 0; i <= 9; i++) {
asciiDigits['0' + i] = (byte) i;
}
for (int i = 0; i <= 26; i++) {
asciiDigits['A' + i] = (byte) (10 + i);
asciiDigits['a' + i] = (byte) (10 + i);
}
}
private Ints() {
}
/**
* Returns the {@code int} nearest in value to {@code value}.
*
* @param value any {@code long} value
* @return the same value cast to {@code int} if it is in the range of the
* {@code int} type, {@link Integer#MAX_VALUE} if it is too large,
* or {@link Integer#MIN_VALUE} if it is too small
*/
public static int saturatedCast(long value) {
if (value > Integer.MAX_VALUE) {
return Integer.MAX_VALUE;
}
if (value < Integer.MIN_VALUE) {
return Integer.MIN_VALUE;
}
return (int) value;
}
}