1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.util; 18 19 /** 20 * Math routines similar to those found in {@link java.lang.Math}. 21 * 22 * <p>Historically these methods were faster than the equivalent double-based 23 * {@link java.lang.Math} methods. On versions of Android with a JIT they 24 * became slower and have since been re-implemented to wrap calls to 25 * {@link java.lang.Math}. {@link java.lang.Math} should be used in 26 * preference. 27 * 28 * <p>All methods were removed from the public API in version 23. 29 * 30 * @deprecated Use {@link java.lang.Math} instead. 31 */ 32 @Deprecated 33 @android.ravenwood.annotation.RavenwoodKeepWholeClass 34 public class FloatMath { 35 36 /** Prevents instantiation. */ FloatMath()37 private FloatMath() {} 38 39 /** 40 * Returns the float conversion of the most positive (i.e. closest to 41 * positive infinity) integer value which is less than the argument. 42 * 43 * @param value to be converted 44 * @return the floor of value 45 * @removed 46 */ floor(float value)47 public static float floor(float value) { 48 return (float) Math.floor(value); 49 } 50 51 /** 52 * Returns the float conversion of the most negative (i.e. closest to 53 * negative infinity) integer value which is greater than the argument. 54 * 55 * @param value to be converted 56 * @return the ceiling of value 57 * @removed 58 */ ceil(float value)59 public static float ceil(float value) { 60 return (float) Math.ceil(value); 61 } 62 63 /** 64 * Returns the closest float approximation of the sine of the argument. 65 * 66 * @param angle to compute the cosine of, in radians 67 * @return the sine of angle 68 * @removed 69 */ sin(float angle)70 public static float sin(float angle) { 71 return (float) Math.sin(angle); 72 } 73 74 /** 75 * Returns the closest float approximation of the cosine of the argument. 76 * 77 * @param angle to compute the cosine of, in radians 78 * @return the cosine of angle 79 * @removed 80 */ cos(float angle)81 public static float cos(float angle) { 82 return (float) Math.cos(angle); 83 } 84 85 /** 86 * Returns the closest float approximation of the square root of the 87 * argument. 88 * 89 * @param value to compute sqrt of 90 * @return the square root of value 91 * @removed 92 */ sqrt(float value)93 public static float sqrt(float value) { 94 return (float) Math.sqrt(value); 95 } 96 97 /** 98 * Returns the closest float approximation of the raising "e" to the power 99 * of the argument. 100 * 101 * @param value to compute the exponential of 102 * @return the exponential of value 103 * @removed 104 */ exp(float value)105 public static float exp(float value) { 106 return (float) Math.exp(value); 107 } 108 109 /** 110 * Returns the closest float approximation of the result of raising {@code 111 * x} to the power of {@code y}. 112 * 113 * @param x the base of the operation. 114 * @param y the exponent of the operation. 115 * @return {@code x} to the power of {@code y}. 116 * @removed 117 */ pow(float x, float y)118 public static float pow(float x, float y) { 119 return (float) Math.pow(x, y); 120 } 121 122 /** 123 * Returns {@code sqrt(}<i>{@code x}</i><sup>{@code 2}</sup>{@code +} <i> 124 * {@code y}</i><sup>{@code 2}</sup>{@code )}. 125 * 126 * @param x a float number 127 * @param y a float number 128 * @return the hypotenuse 129 * @removed 130 */ hypot(float x, float y)131 public static float hypot(float x, float y) { 132 return (float) Math.hypot(x, y); 133 } 134 } 135