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/uspace/lib/softfloat/neg.c

https://gitlab.com/vhelen/vhelen
C | 87 lines | 33 code | 19 blank | 35 comment | 0 complexity | 5a9ea8a53f29ec9febb8b3ac94c0a861 MD5 | raw file
 1/*
 2 * Copyright (c) 2005 Josef Cejka
 3 * Copyright (c) 2011 Petr Koupy
 4 * All rights reserved.
 5 *
 6 * Redistribution and use in source and binary forms, with or without
 7 * modification, are permitted provided that the following conditions
 8 * are met:
 9 *
10 * - Redistributions of source code must retain the above copyright
11 *   notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 *   derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/** @addtogroup softfloat
31 * @{
32 */
33/** @file Negation functions.
34 */
35
36#include "neg.h"
37#include "common.h"
38
39#ifdef float32_t
40
41float32_t __negsf2(float32_t a)
42{
43	float32_u ua;
44	ua.val = a;
45	
46	ua.data.parts.sign = !ua.data.parts.sign;
47	
48	return ua.val;
49}
50
51#endif
52
53#ifdef float64_t
54
55float64_t __negdf2(float64_t a)
56{
57	float64_u ua;
58	ua.val = a;
59	
60	ua.data.parts.sign = !ua.data.parts.sign;
61	
62	return ua.val;
63}
64
65#endif
66
67#ifdef float128_t
68
69float128_t __negtf2(float128_t a)
70{
71	float128_u ua;
72	ua.val = a;
73	
74	ua.data.parts.sign = !ua.data.parts.sign;
75	
76	return ua.val;
77}
78
79void _Qp_neg(float128_t *c, float128_t *a)
80{
81	*c = __negtf2(*a);
82}
83
84#endif
85
86/** @}
87 */