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/*
* Copyright (C) 2011 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 com.google.common.math;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.GwtCompatible;
import java.math.BigInteger;
/**
* A collection of preconditions for math functions.
*
* @author Louis Wasserman
*/
@GwtCompatible
final class MathPreconditions {
static int checkPositive(String role, int x) {
if (x <= 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be > 0");
}
return x;
}
static long checkPositive(String role, long x) {
if (x <= 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be > 0");
}
return x;
}
static BigInteger checkPositive(String role, BigInteger x) {
if (x.signum() <= 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be > 0");
}
return x;
}
static int checkNonNegative(String role, int x) {
if (x < 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be >= 0");
}
return x;
}
static long checkNonNegative(String role, long x) {
if (x < 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be >= 0");
}
return x;
}
static BigInteger checkNonNegative(String role, BigInteger x) {
if (checkNotNull(x).signum() < 0) {
throw new IllegalArgumentException(role + " (" + x + ") must be >= 0");
}
return x;
}
static void checkRoundingUnnecessary(boolean condition) {
if (!condition) {
throw new ArithmeticException("mode was UNNECESSARY, but rounding was necessary");
}
}
static void checkInRange(boolean condition) {
if (!condition) {
throw new ArithmeticException("not in range");
}
}
static void checkNoOverflow(boolean condition) {
if (!condition) {
throw new ArithmeticException("overflow");
}
}
private MathPreconditions() {}
}
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