blob: e16d188dce0406c6796bcda84a79c4d1a1c19fa9 (
plain)
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
|
/* EINA - EFL data type library
* Copyright (C) 2007-2008 Jorge Luis Zapata Muga
* Copyright (C) 2009 Cedric BAIL
*
* 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/>.
*/
#ifndef EINA_INLINE_F16P16_X_
#define EINA_INLINE_F16P16_X_
static inline Eina_F16p16
eina_f16p16_add(Eina_F16p16 a, Eina_F16p16 b)
{
return a + b;
}
static inline Eina_F16p16
eina_f16p16_sub(Eina_F16p16 a, Eina_F16p16 b)
{
return a - b;
}
static inline Eina_F16p16
eina_f16p16_mul(Eina_F16p16 a, Eina_F16p16 b)
{
return (Eina_F16p16)(((int64_t)a * (int64_t)b) >> 16);
}
static inline Eina_F16p16
eina_f16p16_scale(Eina_F16p16 a, int b)
{
return a * b;
}
static inline Eina_F16p16
eina_f16p16_div(Eina_F16p16 a, Eina_F16p16 b)
{
return (Eina_F16p16) ((((int64_t) a) << 16) / (int64_t) b);
}
static inline Eina_F16p16
eina_f16p16_sqrt(Eina_F16p16 a)
{
unsigned int root, remHi, remLo, testDiv, count;
root = 0; /* Clear root */
remHi = 0; /* Clear high part of partial remainder */
remLo = a; /* Get argument into low part of partial remainder */
count = (15 + (16 >> 1)); /* Load loop counter */
do {
remHi = (remHi << 2) | (remLo >> 30);
remLo <<= 2; /* get 2 bits of arg */
root <<= 1; /* Get ready for the next bit in the root */
testDiv = (root << 1) + 1; /* Test radical */
if (remHi >= testDiv)
{
remHi -= testDiv;
root++;
}
} while (count-- != 0);
return root;
}
static inline unsigned int
eina_f16p16_fracc_get(Eina_F16p16 v)
{
return (v & 0xffff);
}
#endif
|
