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/*
* Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package java9.lang;
/**
* A place for static default implementations of the new Java 8
* static methods in the {@link Double} class.
*/
public final class Doubles {
/**
* Returns a hash code for a {@code double} value; compatible with
* {@code Double.hashCode()}.
*
* @param value the value to hash
* @return a hash code value for a {@code double} value.
* @since 1.8
*/
public static int hashCode(double value) {
long bits = Double.doubleToLongBits(value);
return (int) (bits ^ (bits >>> 32));
}
/**
* Adds two {@code double} values together as per the + operator.
*
*
See The Java? Language Specification:
4.2.4 Floating-Point Operations
*
* @param a the first operand
* @param b the second operand
* @return the sum of {@code a} and {@code b}
* @see java9.util.function.BinaryOperator
* @since 1.8
*/
public static double sum(double a, double b) {
return a + b;
}
/**
* Returns the greater of two {@code double} values
* as if by calling {@link Math#max(double, double) Math.max}.
*
* @param a the first operand
* @param b the second operand
* @return the greater of {@code a} and {@code b}
* @see java9.util.function.BinaryOperator
* @since 1.8
*/
public static double max(double a, double b) {
return Math.max(a, b);
}
/**
* Returns the smaller of two {@code double} values
* as if by calling {@link Math#min(double, double) Math.min}.
*
* @param a the first operand
* @param b the second operand
* @return the smaller of {@code a} and {@code b}.
* @see java9.util.function.BinaryOperator
* @since 1.8
*/
public static double min(double a, double b) {
return Math.min(a, b);
}
/**
* Returns {@code true} if the argument is a finite floating-point
* value; returns {@code false} otherwise (for NaN and infinity
* arguments).
*
* @param d the {@code double} value to be tested
* @return {@code true} if the argument is a finite
* floating-point value, {@code false} otherwise.
* @since 1.8
*/
public static boolean isFinite(double d) {
return Math.abs(d) <= 1.7976931348623157E+308D;
}
private Doubles() {
}
}