1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** GUIX Component */
17 /** */
18 /** Utility (Utility) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_utility.h"
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* _gx_utility_math_acos_5_4_0 PORTABLE C */
35 /* 6.1 */
36 /* AUTHOR */
37 /* */
38 /* Kenneth Maxwell, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This service computes the angle value of the arc cosine x. */
43 /* */
44 /* INPUT */
45 /* */
46 /* x Value whose arc cosine is */
47 /* computed, in the interval */
48 /* [-256, 256]. */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* angle Angle value of arc cosine of x*/
53 /* */
54 /* CALLS */
55 /* */
56 /* _gx_utility_math_asin_5_4_0 Compute arc sin */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
67 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
71 #if defined(GUIX_5_4_0_COMPATIBILITY)
_gx_utility_math_acos_5_4_0(INT x)72 INT _gx_utility_math_acos_5_4_0(INT x)
73 {
74 INT angle = 0;
75
76 angle = _gx_utility_math_asin_5_4_0(x);
77 angle = 90 - angle;
78
79 return angle;
80 }
81 #endif
82
83 /**************************************************************************/
84 /* */
85 /* FUNCTION RELEASE */
86 /* */
87 /* _gx_utility_math_acos PORTABLE C */
88 /* 6.1 */
89 /* AUTHOR */
90 /* */
91 /* Kenneth Maxwell, Microsoft Corporation */
92 /* */
93 /* DESCRIPTION */
94 /* */
95 /* This service computes the angle value of the arc cosine x, which is */
96 /* an old version of _gx_utility_math_cos. */
97 /* */
98 /* INPUT */
99 /* */
100 /* x Value whose arc cosine is */
101 /* computed. The value is a */
102 /* fixed point math data type, */
103 /* call GX_FIXED_VAL_MAKE to do */
104 /* type conversion. */
105 /* */
106 /* OUTPUT */
107 /* */
108 /* angle Angle value of arc cosine of x*/
109 /* */
110 /* CALLS */
111 /* */
112 /* _gx_utility_math_asin Compute arc sin */
113 /* */
114 /* CALLED BY */
115 /* */
116 /* Application Code */
117 /* */
118 /* RELEASE HISTORY */
119 /* */
120 /* DATE NAME DESCRIPTION */
121 /* */
122 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
123 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
124 /* resulting in version 6.1 */
125 /* */
126 /**************************************************************************/
_gx_utility_math_acos(GX_FIXED_VAL x)127 INT _gx_utility_math_acos(GX_FIXED_VAL x)
128 {
129 INT angle = 0;
130
131 angle = _gx_utility_math_asin(x);
132 angle = 90 - angle;
133
134 return angle;
135 }
136
137
