AM261x MCU+ SDK: fastrts.h Source File

| AM261x MCU+ SDK 26.00.00 |

fastrts.h
Go to the documentation of this file.
1 /*
2 * Copyright (C) 2024 Texas Instruments Incorporated
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the
14 * distribution.
15 *
16 * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
42 #ifndef FASTRTS_H
43 #define FASTRTS_H
44
45 #ifdef __cplusplus
46 extern "C"
47 {
48 #endif
49
50 /* ========================================================================== */
51 /* Macros */
52 /* ========================================================================== */
53
54 #define RTS_TEXT_SECTION __attribute__((section(".trigText"))) __attribute__((always_inline)) inline
55 #define RTS_DATA_SECTION __attribute__((aligned(8), section(".trigData")))
56
57 /* ========================================================================== */
58 /* Function Declarations */
59 /* ========================================================================== */
60
66 extern float FastRTS_cosf(const float theta);
67
73 extern float FastRTS_sinf(const float theta);
74
80 extern void FastRTS_sincos(const float theta, float *retValues);
81
87 extern float FastRTS_acosf(const float theta);
88
94 extern float FastRTS_asinf(const float theta);
95
101 extern float FastRTS_atanf(const float x);
102
111 extern float FastRTS_atan2f(const float y, const float x);
112
119 extern float FastRTS_expf(const float x);
120
126 extern float FastRTS_logf(const float x);
127
128 /* ========================================================================== */
129 /* Static Function Definitions */
130 /* ========================================================================== */
131
132 // Originates from ti_arm_trig.h and is slightly faster than standard math version
133 RTS_TEXT_SECTION static float FastRTS_sqrtf(const float x)
134 {
135 float r = 0;
136 __asm ("VSQRT.F32 %0, %1" : "=t" (r) : "t" (x));
137 return r;
138 }
139
142 #ifdef __cplusplus
143 }
144 #endif
145
146 #endif /* FASTRTS_H */
FastRTS_sincos
void FastRTS_sincos(const float theta, float *retValues)
The Sine/Cosine Function.
FastRTS_logf
float FastRTS_logf(const float x)
The Natural Logarithm function.
FastRTS_expf
float FastRTS_expf(const float x)
The Exponent function.
FastRTS_cosf
float FastRTS_cosf(const float theta)
The Cosine Function.
RTS_TEXT_SECTION
#define RTS_TEXT_SECTION
Definition: fastrts.h:54
FastRTS_acosf
float FastRTS_acosf(const float theta)
The Arccosine Function.
FastRTS_atan2f
float FastRTS_atan2f(const float y, const float x)
The Arctangent(y,x) function.
FastRTS_sqrtf
static RTS_TEXT_SECTION float FastRTS_sqrtf(const float x)
Definition: fastrts.h:133
FastRTS_sinf
float FastRTS_sinf(const float theta)
The Sine Function.
FastRTS_atanf
float FastRTS_atanf(const float x)
The Arctangent function.
FastRTS_asinf
float FastRTS_asinf(const float theta)
The Arcsine Function.