1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Utility (Utility) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_utility.h"
28
29 /**************************************************************************/
30 /* */
31 /* FUNCTION RELEASE */
32 /* */
33 /* _gx_utility_math_acos_5_4_0 PORTABLE C */
34 /* 6.1 */
35 /* AUTHOR */
36 /* */
37 /* Kenneth Maxwell, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This service computes the angle value of the arc cosine x. */
42 /* */
43 /* INPUT */
44 /* */
45 /* x Value whose arc cosine is */
46 /* computed, in the interval */
47 /* [-256, 256]. */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* angle Angle value of arc cosine of x*/
52 /* */
53 /* CALLS */
54 /* */
55 /* _gx_utility_math_asin_5_4_0 Compute arc sin */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* Application Code */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
66 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
67 /* resulting in version 6.1 */
68 /* */
69 /**************************************************************************/
70 #if defined(GUIX_5_4_0_COMPATIBILITY)
_gx_utility_math_acos_5_4_0(INT x)71 INT _gx_utility_math_acos_5_4_0(INT x)
72 {
73 INT angle = 0;
74
75 angle = _gx_utility_math_asin_5_4_0(x);
76 angle = 90 - angle;
77
78 return angle;
79 }
80 #endif
81
82 /**************************************************************************/
83 /* */
84 /* FUNCTION RELEASE */
85 /* */
86 /* _gx_utility_math_acos PORTABLE C */
87 /* 6.1 */
88 /* AUTHOR */
89 /* */
90 /* Kenneth Maxwell, Microsoft Corporation */
91 /* */
92 /* DESCRIPTION */
93 /* */
94 /* This service computes the angle value of the arc cosine x, which is */
95 /* an old version of _gx_utility_math_cos. */
96 /* */
97 /* INPUT */
98 /* */
99 /* x Value whose arc cosine is */
100 /* computed. The value is a */
101 /* fixed point math data type, */
102 /* call GX_FIXED_VAL_MAKE to do */
103 /* type conversion. */
104 /* */
105 /* OUTPUT */
106 /* */
107 /* angle Angle value of arc cosine of x*/
108 /* */
109 /* CALLS */
110 /* */
111 /* _gx_utility_math_asin Compute arc sin */
112 /* */
113 /* CALLED BY */
114 /* */
115 /* Application Code */
116 /* */
117 /* RELEASE HISTORY */
118 /* */
119 /* DATE NAME DESCRIPTION */
120 /* */
121 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
122 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
123 /* resulting in version 6.1 */
124 /* */
125 /**************************************************************************/
_gx_utility_math_acos(GX_FIXED_VAL x)126 INT _gx_utility_math_acos(GX_FIXED_VAL x)
127 {
128 INT angle = 0;
129
130 angle = _gx_utility_math_asin(x);
131 angle = 90 - angle;
132
133 return angle;
134 }
135
136
