1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* $NetBSD: qp.c,v 1.4 2022/10/05 10:28:19 nia Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include "milieu.h"
#include "softfloat.h"
/*
* This file provides wrappers for the softfloat functions. We can't use
* invoke them directly since long double arguments are passed in FP/SIMD
* as well as being returned in them while float128 arguments are passed
* in normal registers.
*
* XXX: we're using compiler_rt for this now. Only one function remains
* that is missing from compiler_rt.
*/
long double __negtf2(long double);
union sf_ieee_flt_u {
float fltu_f;
float32 fltu_f32;
};
union sf_ieee_dbl_u {
double dblu_d;
float64 dblu_f64;
};
union sf_ieee_ldbl_u {
long double ldblu_ld;
float128 ldblu_f128;
};
long double
__negtf2(long double ld_a)
{
const union sf_ieee_ldbl_u zero = { .ldblu_ld = 0.0 };
const union sf_ieee_ldbl_u a = { .ldblu_ld = ld_a };
const union sf_ieee_ldbl_u b = {
.ldblu_f128 = float128_div(zero.ldblu_f128, a.ldblu_f128)
};
return b.ldblu_ld;
}
|