Initial Jack import.

Change-Id: I953cf0a520195a7187d791b2885848ad0d5a9b43

1 files changed, 98 insertions, 0 deletions

diff --git a/guava/src/com/google/common/math/MathPreconditions.java b/guava/src/com/google/common/math/MathPreconditions.java
new file mode 100644
index 0000000..96835c6
--- /dev/null
+++ b/guava/src/com/google/common/math/MathPreconditions.java
@@ -0,0 +1,98 @@
+/*
+ * 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 double checkNonNegative(String role, double x) {
+    if (!(x >= 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() {}
+}