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| author | jaseg <git@jaseg.net> | 2020-10-14 12:47:28 +0200 |
|---|---|---|
| committer | jaseg <git@jaseg.net> | 2020-10-14 12:47:28 +0200 |
| commit | 6ab94e0b318884bbcb95e2ea3835f951502e1d99 (patch) | |
| tree | 4cc5794b89f89c55ff8370ae252518ab96b5fed3 /hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c | |
| parent | 1e6e8a2062923b434b2f4f5f2a9f8c0098135b01 (diff) | |
| download | minikbd-6ab94e0b318884bbcb95e2ea3835f951502e1d99.tar.gz minikbd-6ab94e0b318884bbcb95e2ea3835f951502e1d99.tar.bz2 minikbd-6ab94e0b318884bbcb95e2ea3835f951502e1d99.zip | |
Move firmware into subdirectory
Diffstat (limited to 'hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c')
| -rw-r--r-- | hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c deleted file mode 100644 index 2119016..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q31.c +++ /dev/null @@ -1,75 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sin_q31.c
- * Description: Fast sine calculation for Q31 values
- *
- * $Date: 27. January 2017
- * $Revision: V.1.5.1
- *
- * Target Processor: Cortex-M cores
- * -------------------------------------------------------------------- */
-/*
- * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "arm_math.h"
-#include "arm_common_tables.h"
-
-/**
- * @ingroup groupFastMath
- */
-
- /**
- * @addtogroup sin
- * @{
- */
-
-/**
- * @brief Fast approximation to the trigonometric sine function for Q31 data.
- * @param[in] x Scaled input value in radians.
- * @return sin(x).
- *
- * The Q31 input value is in the range [0 +0.9999] and is mapped to a radian value in the range [0 2*pi). */
-
-q31_t arm_sin_q31(
- q31_t x)
-{
- q31_t sinVal; /* Temporary variables for input, output */
- int32_t index; /* Index variables */
- q31_t a, b; /* Four nearest output values */
- q31_t fract; /* Temporary values for fractional values */
-
- /* Calculate the nearest index */
- index = (uint32_t)x >> FAST_MATH_Q31_SHIFT;
-
- /* Calculation of fractional value */
- fract = (x - (index << FAST_MATH_Q31_SHIFT)) << 9;
-
- /* Read two nearest values of input value from the sin table */
- a = sinTable_q31[index];
- b = sinTable_q31[index+1];
-
- /* Linear interpolation process */
- sinVal = (q63_t)(0x80000000-fract)*a >> 32;
- sinVal = (q31_t)((((q63_t)sinVal << 32) + ((q63_t)fract*b)) >> 32);
-
- return sinVal << 1;
-}
-
-/**
- * @} end of sin group
- */
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