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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright © 2012 - 2014 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ocl_common.h"
#include "ocl_float.h"
#include "ocl_relational.h"
/////////////////////////////////////////////////////////////////////////////
// Common Functions
/////////////////////////////////////////////////////////////////////////////
PURE CONST OVERLOADABLE float __gen_ocl_fmax(float a, float b);
PURE CONST OVERLOADABLE float __gen_ocl_fmin(float a, float b);
PURE CONST OVERLOADABLE float __gen_ocl_lrp(float a, float b, float c);
PURE CONST OVERLOADABLE double __gen_ocl_fmax(double a, double b);
PURE CONST OVERLOADABLE double __gen_ocl_fmin(double a, double b);
OVERLOADABLE float step(float edge, float x) {
return x < edge ? 0.0 : 1.0;
}
OVERLOADABLE float max(float a, float b) {
return __gen_ocl_fmax(a, b);
}
OVERLOADABLE float min(float a, float b) {
return __gen_ocl_fmin(a, b);
}
OVERLOADABLE float mix(float x, float y, float a) {
return __gen_ocl_lrp(a,y,x); //The lrp using a different order with mix
}
OVERLOADABLE float clamp(float v, float l, float u) {
return max(min(v, u), l);
}
OVERLOADABLE float degrees(float radians) {
return M_180_PI_F * radians;
}
OVERLOADABLE float radians(float degrees) {
return (M_PI_F / 180) * degrees;
}
OVERLOADABLE float smoothstep(float e0, float e1, float x) {
x = clamp((x - e0) / (e1 - e0), 0.f, 1.f);
return x * x * (3 - 2 * x);
}
OVERLOADABLE float sign(float x) {
// TODO: the best form of implementation is below,
// But I find it hard to implement in Beignet now,
// So I would put it in the TODO list.
// cmp.ne.f0 null x:f 0.0:f
// and ret:ud x:ud 0x80000000:ud
//(+f0) or ret:ud ret:ud 0x3f800000:ud
// cmp.ne.f0 null x:f x:f
//(+f0) mov ret:f 0.0f
union {float f; unsigned u;} ieee;
ieee.f = x;
unsigned k = ieee.u;
float r = (k&0x80000000) ? -1.0f : 1.0f;
// differentiate +0.0f -0.0f
float s = 0.0f * r;
s = (x == 0.0f) ? s : r;
return isnan(x) ? 0.0f : s;
}
// Half float version.
PURE CONST OVERLOADABLE half __gen_ocl_fmax(half a, half b);
PURE CONST OVERLOADABLE half __gen_ocl_fmin(half a, half b);
OVERLOADABLE half step(half edge, half x) {
return x < edge ? 0.0 : 1.0;
}
OVERLOADABLE half max(half a, half b) {
return __gen_ocl_fmax(a, b);
}
OVERLOADABLE half min(half a, half b) {
return __gen_ocl_fmin(a, b);
}
OVERLOADABLE half mix(half x, half y, half a) {
return x + (y-x)*a;
}
OVERLOADABLE half clamp(half v, half l, half u) {
return max(min(v, u), l);
}
OVERLOADABLE half degrees(half radians) {
return ((half)(M_180_PI_F)) * radians;
}
OVERLOADABLE half radians(half degrees) {
return ((half)(M_PI_F / 180)) * degrees;
}
OVERLOADABLE half smoothstep(half e0, half e1, half x) {
x = clamp((x - e0) / (e1 - e0), (half)0.0, (half)1.0);
return x * x * (3 - 2 * x);
}
OVERLOADABLE half sign(half x) {
union {half h; ushort u;} ieee;
ieee.h = x;
unsigned k = ieee.u;
half r = (k&0x8000) ? -1.0 : 1.0;
// differentiate +0.0f -0.0f
half s = (half)0.0 * r;
s = (x == (half)0.0) ? s : r;
return isnan(x) ? 0.0 : s;
}
OVERLOADABLE double step(double edge, double x)
{
return x < edge ? 0.0 : 1.0;
}
OVERLOADABLE double max(double a, double b)
{
return __gen_ocl_fmax(a, b);
}
OVERLOADABLE double min(double a, double b)
{
return __gen_ocl_fmin(a, b);
}
OVERLOADABLE double mix(double x, double y, double a)
{
return x + (y-x)*a;
}
|
