Project Ne10
An Open Optimized Software Library Project for the ARM Architecture
NE10_normalize.c
1 /*
2  * Copyright 2011-15 ARM Limited and Contributors.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  * * Redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer.
9  * * Redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution.
12  * * Neither the name of ARM Limited nor the
13  * names of its contributors may be used to endorse or promote products
14  * derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY ARM LIMITED AND CONTRIBUTORS "AS IS" AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19  * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED AND CONTRIBUTORS BE LIABLE FOR ANY
20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 /*
29  * NE10 Library : math/NE10_normalize.c
30  */
31 
32 #include "NE10_types.h"
33 #include "macros.h"
34 
35 #include <assert.h>
36 
37 #include <math.h>
38 
39 ne10_result_t ne10_normalize_vec2f_c (ne10_vec2f_t * dst, ne10_vec2f_t * src, ne10_uint32_t count)
40 {
41  ne10_float32_t len;
42 
43  NE10_LEN_OPERATION_X_C
44  (
45  len = sqrt (src[ itr ].x * src[ itr ].x +
46  src[ itr ].y * src[ itr ].y) ;
47 
48  dst[ itr ].x = src[ itr ].x / len;
49  dst[ itr ].y = src[ itr ].y / len;
50  );
51 }
52 
53 ne10_result_t ne10_normalize_vec3f_c (ne10_vec3f_t * dst, ne10_vec3f_t * src, ne10_uint32_t count)
54 {
55  ne10_float32_t len;
56 
57  NE10_LEN_OPERATION_X_C
58  (
59  len = sqrt (src[ itr ].x * src[ itr ].x +
60  src[ itr ].y * src[ itr ].y +
61  src[ itr ].z * src[ itr ].z);
62 
63  dst[ itr ].x = src[ itr ].x / len;
64  dst[ itr ].y = src[ itr ].y / len;
65  dst[ itr ].z = src[ itr ].z / len;
66  );
67 }
68 
69 ne10_result_t ne10_normalize_vec4f_c (ne10_vec4f_t * dst, ne10_vec4f_t * src, ne10_uint32_t count)
70 {
71  ne10_float32_t len;
72 
73  NE10_LEN_OPERATION_X_C
74  (
75  len = sqrt (src[ itr ].x * src[ itr ].x +
76  src[ itr ].y * src[ itr ].y +
77  src[ itr ].z * src[ itr ].z +
78  src[ itr ].w * src[ itr ].w);
79 
80  dst[ itr ].x = src[ itr ].x / len;
81  dst[ itr ].y = src[ itr ].y / len;
82  dst[ itr ].z = src[ itr ].z / len;
83  dst[ itr ].w = src[ itr ].w / len;
84  );
85 }
a 2-tuple of ne10_float32_t values.
Definition: NE10_types.h:87
a 3-tuple of ne10_float32_t values.
Definition: NE10_types.h:96
a 4-tuple of ne10_float32_t values.
Definition: NE10_types.h:106