0N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.misc;
0N/A
0N/A/**
0N/A * This class contains additional constants documenting limits of the
0N/A * <code>float</code> type.
0N/A *
0N/A * @author Joseph D. Darcy
0N/A */
0N/A
0N/Apublic class FloatConsts {
0N/A /**
0N/A * Don't let anyone instantiate this class.
0N/A */
0N/A private FloatConsts() {}
0N/A
0N/A public static final float POSITIVE_INFINITY = java.lang.Float.POSITIVE_INFINITY;
0N/A public static final float NEGATIVE_INFINITY = java.lang.Float.NEGATIVE_INFINITY;
0N/A public static final float NaN = java.lang.Float.NaN;
0N/A public static final float MAX_VALUE = java.lang.Float.MAX_VALUE;
0N/A public static final float MIN_VALUE = java.lang.Float.MIN_VALUE;
0N/A
0N/A /**
0N/A * A constant holding the smallest positive normal value of type
0N/A * <code>float</code>, 2<sup>-126</sup>. It is equal to the value
0N/A * returned by <code>Float.intBitsToFloat(0x00800000)</code>.
0N/A */
0N/A public static final float MIN_NORMAL = 1.17549435E-38f;
0N/A
0N/A /**
0N/A * The number of logical bits in the significand of a
0N/A * <code>float</code> number, including the implicit bit.
0N/A */
0N/A public static final int SIGNIFICAND_WIDTH = 24;
0N/A
0N/A /**
0N/A * Maximum exponent a finite <code>float</code> number may have.
0N/A * It is equal to the value returned by
0N/A * <code>Math.ilogb(Float.MAX_VALUE)</code>.
0N/A */
0N/A public static final int MAX_EXPONENT = 127;
0N/A
0N/A /**
0N/A * Minimum exponent a normalized <code>float</code> number may
0N/A * have. It is equal to the value returned by
0N/A * <code>Math.ilogb(Float.MIN_NORMAL)</code>.
0N/A */
0N/A public static final int MIN_EXPONENT = -126;
0N/A
0N/A /**
0N/A * The exponent the smallest positive <code>float</code> subnormal
0N/A * value would have if it could be normalized. It is equal to the
0N/A * value returned by <code>FpUtils.ilogb(Float.MIN_VALUE)</code>.
0N/A */
0N/A public static final int MIN_SUB_EXPONENT = MIN_EXPONENT -
0N/A (SIGNIFICAND_WIDTH - 1);
0N/A
0N/A /**
0N/A * Bias used in representing a <code>float</code> exponent.
0N/A */
0N/A public static final int EXP_BIAS = 127;
0N/A
0N/A /**
0N/A * Bit mask to isolate the sign bit of a <code>float</code>.
0N/A */
0N/A public static final int SIGN_BIT_MASK = 0x80000000;
0N/A
0N/A /**
0N/A * Bit mask to isolate the exponent field of a
0N/A * <code>float</code>.
0N/A */
0N/A public static final int EXP_BIT_MASK = 0x7F800000;
0N/A
0N/A /**
0N/A * Bit mask to isolate the significand field of a
0N/A * <code>float</code>.
0N/A */
0N/A public static final int SIGNIF_BIT_MASK = 0x007FFFFF;
0N/A
0N/A static {
0N/A // verify bit masks cover all bit positions and that the bit
0N/A // masks are non-overlapping
0N/A assert(((SIGN_BIT_MASK | EXP_BIT_MASK | SIGNIF_BIT_MASK) == ~0) &&
0N/A (((SIGN_BIT_MASK & EXP_BIT_MASK) == 0) &&
0N/A ((SIGN_BIT_MASK & SIGNIF_BIT_MASK) == 0) &&
0N/A ((EXP_BIT_MASK & SIGNIF_BIT_MASK) == 0)));
0N/A }
0N/A}