1 /*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
56 * <code>float</code> number, including the implicit bit.
57 */
58 public static final int SIGNIFICAND_WIDTH = 24;
59
60 /**
61 * Maximum exponent a finite <code>float</code> number may have.
62 * It is equal to the value returned by
63 * <code>Math.ilogb(Float.MAX_VALUE)</code>.
64 */
65 public static final int MAX_EXPONENT = 127;
66
67 /**
68 * Minimum exponent a normalized <code>float</code> number may
69 * have. It is equal to the value returned by
70 * <code>Math.ilogb(Float.MIN_NORMAL)</code>.
71 */
72 public static final int MIN_EXPONENT = -126;
73
74 /**
75 * The exponent the smallest positive <code>float</code> subnormal
76 * value would have if it could be normalized. It is equal to the
77 * value returned by <code>FpUtils.ilogb(Float.MIN_VALUE)</code>.
78 */
79 public static final int MIN_SUB_EXPONENT = MIN_EXPONENT -
80 (SIGNIFICAND_WIDTH - 1);
81
82 /**
83 * Bias used in representing a <code>float</code> exponent.
84 */
85 public static final int EXP_BIAS = 127;
86
87 /**
88 * Bit mask to isolate the sign bit of a <code>float</code>.
89 */
90 public static final int SIGN_BIT_MASK = 0x80000000;
91
92 /**
93 * Bit mask to isolate the exponent field of a
94 * <code>float</code>.
95 */
96 public static final int EXP_BIT_MASK = 0x7F800000;
97
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1 /*
2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
56 * <code>float</code> number, including the implicit bit.
57 */
58 public static final int SIGNIFICAND_WIDTH = 24;
59
60 /**
61 * Maximum exponent a finite <code>float</code> number may have.
62 * It is equal to the value returned by
63 * <code>Math.ilogb(Float.MAX_VALUE)</code>.
64 */
65 public static final int MAX_EXPONENT = 127;
66
67 /**
68 * Minimum exponent a normalized <code>float</code> number may
69 * have. It is equal to the value returned by
70 * <code>Math.ilogb(Float.MIN_NORMAL)</code>.
71 */
72 public static final int MIN_EXPONENT = -126;
73
74 /**
75 * The exponent the smallest positive <code>float</code> subnormal
76 * value would have if it could be normalized.
77 */
78 public static final int MIN_SUB_EXPONENT = MIN_EXPONENT -
79 (SIGNIFICAND_WIDTH - 1);
80
81 /**
82 * Bias used in representing a <code>float</code> exponent.
83 */
84 public static final int EXP_BIAS = 127;
85
86 /**
87 * Bit mask to isolate the sign bit of a <code>float</code>.
88 */
89 public static final int SIGN_BIT_MASK = 0x80000000;
90
91 /**
92 * Bit mask to isolate the exponent field of a
93 * <code>float</code>.
94 */
95 public static final int EXP_BIT_MASK = 0x7F800000;
96
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