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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
// altivec integer vector helper class
//
// Copyright (C) 2011 Tim Blechmann
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
#ifndef VEC_INT_ALTIVEC_HPP
#define VEC_INT_ALTIVEC_HPP
#include <altivec.h>
namespace nova {
namespace detail {
struct int_vec_altivec
{
typedef vector float fvec;
typedef vector unsigned int ivec;
ivec data_;
private:
static ivec set_vector(int i)
{
#ifdef __GNUC__
return (ivec){i, i, i, i};
#else
#error compiler not supported
#endif
}
public:
explicit int_vec_altivec(int arg):
data_(set_vector(arg))
{}
int_vec_altivec(fvec arg):
data_((ivec)arg)
{}
int_vec_altivec(ivec arg):
data_(arg)
{}
int_vec_altivec(int_vec_altivec const & arg):
data_(arg.data_)
{}
int_vec_altivec(vector signed int arg):
data_((ivec)arg)
{}
int_vec_altivec(void)
{}
operator ivec (void) const
{
return data_;
}
friend int_vec_altivec operator+(int_vec_altivec const & lhs, int_vec_altivec const & rhs)
{
return vec_add(lhs.data_, rhs.data_);
}
friend int_vec_altivec operator-(int_vec_altivec const & lhs, int_vec_altivec const & rhs)
{
return vec_sub(lhs.data_, rhs.data_);
}
#define RELATIONAL_MASK_OPERATOR(op, opcode) \
friend inline int_vec_altivec mask_##op(int_vec_altivec const & lhs, int_vec_altivec const & rhs) \
{ \
return int_vec_altivec((ivec)opcode(lhs.data_, rhs.data_)); \
}
RELATIONAL_MASK_OPERATOR(lt, vec_cmplt)
RELATIONAL_MASK_OPERATOR(gt, vec_cmpgt)
RELATIONAL_MASK_OPERATOR(eq, vec_cmpeq)
#undef RELATIONAL_MASK_OPERATOR
friend int_vec_altivec operator&(int_vec_altivec const & lhs, int_vec_altivec const & rhs)
{
return int_vec_altivec (vec_and(lhs.data_, rhs.data_));
}
friend inline int_vec_altivec andnot(int_vec_altivec const & lhs, int_vec_altivec const & rhs)
{
return int_vec_altivec(vec_andc(lhs.data_, rhs.data_));
}
// shift in zeros
friend inline int_vec_altivec slli(int_vec_altivec const & arg, int count)
{
return vec_sl(arg.data_, set_vector(count));
}
// shift in zeros
friend inline int_vec_altivec srli(int_vec_altivec const & arg, int count)
{
return vec_sr(arg.data_, set_vector(count));
}
inline fvec convert_to_float(void) const
{
return vec_ctf(data_, 0);
}
};
}
}
#endif /* VEC_INT_ALTIVEC_HPP */
|
