1  /*
 2   * Copyright (C) 2018-2020, Advanced Micro Devices, Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without modification,
 5   * are permitted provided that the following conditions are met:
 6   * 1. Redistributions of source code must retain the above copyright notice,
 7   *    this list of conditions and the following disclaimer.
 8   * 2. Redistributions in binary form must reproduce the above copyright notice,
 9   *    this list of conditions and the following disclaimer in the documentation
10   *    and/or other materials provided with the distribution.
11   * 3. Neither the name of the copyright holder nor the names of its contributors
12   *    may be used to endorse or promote products derived from this software without
13   *    specific prior written permission.
14   *
15   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
16   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18   * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
19   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
21   * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24   * POSSIBILITY OF SUCH DAMAGE.
25   *
26   */
27  
28  #ifndef __LIBM_CONSTANTS_H__
29  #define __LIBM_CONSTANTS_H__
30  
31  /*
32   * Double precision - alias bin64,flt64
33   */
34  
35  #define ALM_F64_SIGN_SIZE	1
36  #define ALM_F64_SIGN_SHIFT	63
37  #define ALM_F64_SIGN_MASK	(1ULL << ALM_F64_SIGN_SHIFT)
38  
39  #define ALM_F64_EXPO_SIZE	11
40  #define ALM_F64_EXPO_SHIFT	52
41  #define ALM_F64_EXPO_MASK	(((1ULL << ALM_F64_EXPO_SIZE) - 1) << ALM_F64_EXPO_SHIFT)
42  
43  #define ALM_F64_MANT_SIZE	(52)
44  #define ALM_F64_MANT_SHIFT	0
45  #define ALM_F64_MANT_MASK	(((1ULL << ALM_F64_MANT_SIZE) - 1) << ALM_F64_MANT_SHFIT)
46  
47  #define ALM_F64_EXP_MIN		-1022
48  #define ALM_F64_EXP_MAX		1023
49  #define ALM_F64_EXP_BIASMAX	2046
50  #define ALM_F64_EXP_BIASMIN	1
51  
52  #define ALM_F64_INF		0x7FF0000000000000ULL
53  #define ALM_F64_NINF		0xFFF0000000000000ULL
54  #define ALM_F64_NAN		0x7FF8000000000000ULL
55  
56  #define ALM_F64_MIN		0x1.0000000000000p-1022
57  #define ALM_F64_MAX		0x1.fffffffffffffp+1023
58  
59  
60  /*
61   * Single precision - alias bin32,flt32
62   */
63  
64  #define ALM_F32_SIGN_SIZE	1
65  #define ALM_F32_SIGN_SHIFT	31
66  #define ALM_F32_SIGN_MASK	(1ULL << ALM_F32_SIGN_SHIFT)
67  
68  #define ALM_F32_EXPO_SIZE	8
69  #define ALM_F32_EXPO_SHIFT	23
70  #define ALM_F32_EXPO_MASK		(((1ULL << ALM_F32_EXPO_SIZE) - 1) << ALM_F32_EXPO_SHIFT)
71  
72  #define ALM_F32_MANT_SIZE	23
73  #define ALM_F32_MANT_SHIFT	0
74  #define ALM_F32_MANT_MASK	(((1ULL << ALM_F32_MANT_SIZE) - 1) << ALM_F32_MANT_SHFIT)
75  
76  
77  #define ALM_F32_EXP_MIN		-128
78  #define ALM_F32_EXP_MAX		127
79  #define ALM_F32_EXP_BIASMAX	256
80  #define ALM_F32_EXP_BIASMIN	1
81  
82  #define ALM_F32_INF		0x7FF00000
83  #define ALM_F32_INF_MASK		0x7F800000
84  #define ALM_F32_NINF		0xFFF00000
85  #define ALM_F32_NAN		0x7FF80000
86  
87  #define ALM_F32_MIN		0x1.0p-126f
88  #define ALM_F32_MAX		0x1.fffffep127f
89  
90  
91  #endif	/* LIBM_CONSTANTS_H */
92