From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 14 Oct 2020 12:47:28 +0200 Subject: Move firmware into subdirectory --- .../DSP/Source/FastMathFunctions/arm_cos_q31.c | 84 ---------------------- 1 file changed, 84 deletions(-) delete mode 100644 hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q31.c (limited to 'hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q31.c') diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q31.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q31.c deleted file mode 100644 index 105addb..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q31.c +++ /dev/null @@ -1,84 +0,0 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_cos_q31.c - * Description: Fast cosine 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 cos - * @{ - */ - -/** - * @brief Fast approximation to the trigonometric cosine function for Q31 data. - * @param[in] x Scaled input value in radians. - * @return cos(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_cos_q31( - q31_t x) -{ - q31_t cosVal; /* 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 */ - - /* add 0.25 (pi/2) to read sine table */ - x = (uint32_t)x + 0x20000000; - if (x < 0) - { /* convert negative numbers to corresponding positive ones */ - x = (uint32_t)x + 0x80000000; - } - - /* 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 */ - cosVal = (q63_t)(0x80000000-fract)*a >> 32; - cosVal = (q31_t)((((q63_t)cosVal << 32) + ((q63_t)fract*b)) >> 32); - - return cosVal << 1; -} - -/** - * @} end of cos group - */ -- cgit