| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| package android.util; |
| |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| /** |
| * Delegate implementing the native methods of android.util.FloatMath |
| * |
| * Through the layoutlib_create tool, the original native methods of FloatMath have been replaced |
| * by calls to methods of the same name in this delegate class. |
| * |
| * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager} |
| * around to map int to instance of the delegate. |
| * |
| */ |
| /*package*/ final class FloatMath_Delegate { |
| |
| /** Prevents instantiation. */ |
| private FloatMath_Delegate() {} |
| |
| /** |
| * Returns the float conversion of the most positive (i.e. closest to |
| * positive infinity) integer value which is less than the argument. |
| * |
| * @param value to be converted |
| * @return the floor of value |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float floor(float value) { |
| return (float)Math.floor(value); |
| } |
| |
| /** |
| * Returns the float conversion of the most negative (i.e. closest to |
| * negative infinity) integer value which is greater than the argument. |
| * |
| * @param value to be converted |
| * @return the ceiling of value |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float ceil(float value) { |
| return (float)Math.ceil(value); |
| } |
| |
| /** |
| * Returns the closest float approximation of the sine of the argument. |
| * |
| * @param angle to compute the cosine of, in radians |
| * @return the sine of angle |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float sin(float angle) { |
| return (float)Math.sin(angle); |
| } |
| |
| /** |
| * Returns the closest float approximation of the cosine of the argument. |
| * |
| * @param angle to compute the cosine of, in radians |
| * @return the cosine of angle |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float cos(float angle) { |
| return (float)Math.cos(angle); |
| } |
| |
| /** |
| * Returns the closest float approximation of the square root of the |
| * argument. |
| * |
| * @param value to compute sqrt of |
| * @return the square root of value |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float sqrt(float value) { |
| return (float)Math.sqrt(value); |
| } |
| |
| /** |
| * Returns the closest float approximation of the raising "e" to the power |
| * of the argument. |
| * |
| * @param value to compute the exponential of |
| * @return the exponential of value |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float exp(float value) { |
| return (float)Math.exp(value); |
| } |
| |
| /** |
| * Returns the closest float approximation of the result of raising {@code |
| * x} to the power of {@code y}. |
| * |
| * @param x the base of the operation. |
| * @param y the exponent of the operation. |
| * @return {@code x} to the power of {@code y}. |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float pow(float x, float y) { |
| return (float)Math.pow(x, y); |
| } |
| |
| /** |
| * Returns {@code sqrt(}<i>{@code x}</i><sup>{@code 2}</sup>{@code +} <i> |
| * {@code y}</i><sup>{@code 2}</sup>{@code )}. |
| * |
| * @param x a float number |
| * @param y a float number |
| * @return the hypotenuse |
| */ |
| @LayoutlibDelegate |
| /*package*/ static float hypot(float x, float y) { |
| return (float)Math.sqrt(x*x + y*y); |
| } |
| } |