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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 | |
| 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')
8 files changed, 0 insertions, 843 deletions
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_f32.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_f32.c deleted file mode 100644 index 44efbd5..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_f32.c +++ /dev/null @@ -1,115 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_cos_f32.c
- * Description: Fast cosine calculation for floating-point 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
- */
-
-/**
- * @defgroup cos Cosine
- *
- * Computes the trigonometric cosine function using a combination of table lookup
- * and linear interpolation. There are separate functions for
- * Q15, Q31, and floating-point data types.
- * The input to the floating-point version is in radians and in the range [0 2*pi) while the
- * fixed-point Q15 and Q31 have a scaled input with the range
- * [0 +0.9999] mapping to [0 2*pi). The fixed-point range is chosen so that a
- * value of 2*pi wraps around to 0.
- *
- * The implementation is based on table lookup using 256 values together with linear interpolation.
- * The steps used are:
- * -# Calculation of the nearest integer table index
- * -# Compute the fractional portion (fract) of the table index.
- * -# The final result equals <code>(1.0f-fract)*a + fract*b;</code>
- *
- * where
- * <pre>
- * b=Table[index+0];
- * c=Table[index+1];
- * </pre>
- */
-
- /**
- * @addtogroup cos
- * @{
- */
-
-/**
- * @brief Fast approximation to the trigonometric cosine function for floating-point data.
- * @param[in] x input value in radians.
- * @return cos(x).
- */
-
-float32_t arm_cos_f32(
- float32_t x)
-{
- float32_t cosVal, fract, in; /* Temporary variables for input, output */
- uint16_t index; /* Index variable */
- float32_t a, b; /* Two nearest output values */
- int32_t n;
- float32_t findex;
-
- /* input x is in radians */
- /* Scale the input to [0 1] range from [0 2*PI] , divide input by 2*pi, add 0.25 (pi/2) to read sine table */
- in = x * 0.159154943092f + 0.25f;
-
- /* Calculation of floor value of input */
- n = (int32_t) in;
-
- /* Make negative values towards -infinity */
- if (in < 0.0f)
- {
- n--;
- }
-
- /* Map input value to [0 1] */
- in = in - (float32_t) n;
-
- /* Calculation of index of the table */
- findex = (float32_t) FAST_MATH_TABLE_SIZE * in;
- index = ((uint16_t)findex) & 0x1ff;
-
- /* fractional value calculation */
- fract = findex - (float32_t) index;
-
- /* Read two nearest values of input value from the cos table */
- a = sinTable_f32[index];
- b = sinTable_f32[index+1];
-
- /* Linear interpolation process */
- cosVal = (1.0f-fract)*a + fract*b;
-
- /* Return the output value */
- return (cosVal);
-}
-
-/**
- * @} end of cos group
- */
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q15.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q15.c deleted file mode 100644 index 036c5d7..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_cos_q15.c +++ /dev/null @@ -1,84 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_cos_q15.c
- * Description: Fast cosine calculation for Q15 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 Q15 data.
- * @param[in] x Scaled input value in radians.
- * @return cos(x).
- *
- * The Q15 input value is in the range [0 +0.9999] and is mapped to a radian
- * value in the range [0 2*pi).
- */
-
-q15_t arm_cos_q15(
- q15_t x)
-{
- q15_t cosVal; /* Temporary variables for input, output */
- int32_t index; /* Index variables */
- q15_t a, b; /* Four nearest output values */
- q15_t fract; /* Temporary values for fractional values */
-
- /* add 0.25 (pi/2) to read sine table */
- x = (uint16_t)x + 0x2000;
- if (x < 0)
- { /* convert negative numbers to corresponding positive ones */
- x = (uint16_t)x + 0x8000;
- }
-
- /* Calculate the nearest index */
- index = (uint32_t)x >> FAST_MATH_Q15_SHIFT;
-
- /* Calculation of fractional value */
- fract = (x - (index << FAST_MATH_Q15_SHIFT)) << 9;
-
- /* Read two nearest values of input value from the sin table */
- a = sinTable_q15[index];
- b = sinTable_q15[index+1];
-
- /* Linear interpolation process */
- cosVal = (q31_t)(0x8000-fract)*a >> 16;
- cosVal = (q15_t)((((q31_t)cosVal << 16) + ((q31_t)fract*b)) >> 16);
-
- return cosVal << 1;
-}
-
-/**
- * @} end of cos group
- */
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
- */
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_f32.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_f32.c deleted file mode 100644 index 3fb5153..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_f32.c +++ /dev/null @@ -1,123 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sin_f32.c
- * Description: Fast sine calculation for floating-point 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"
-#include <math.h>
-
-/**
- * @ingroup groupFastMath
- */
-
-/**
- * @defgroup sin Sine
- *
- * Computes the trigonometric sine function using a combination of table lookup
- * and linear interpolation. There are separate functions for
- * Q15, Q31, and floating-point data types.
- * The input to the floating-point version is in radians and in the range [0 2*pi) while the
- * fixed-point Q15 and Q31 have a scaled input with the range
- * [0 +0.9999] mapping to [0 2*pi). The fixed-point range is chosen so that a
- * value of 2*pi wraps around to 0.
- *
- * The implementation is based on table lookup using 256 values together with linear interpolation.
- * The steps used are:
- * -# Calculation of the nearest integer table index
- * -# Compute the fractional portion (fract) of the table index.
- * -# The final result equals <code>(1.0f-fract)*a + fract*b;</code>
- *
- * where
- * <pre>
- * b=Table[index+0];
- * c=Table[index+1];
- * </pre>
- */
-
-/**
- * @addtogroup sin
- * @{
- */
-
-/**
- * @brief Fast approximation to the trigonometric sine function for floating-point data.
- * @param[in] x input value in radians.
- * @return sin(x).
- */
-
-float32_t arm_sin_f32(
- float32_t x)
-{
- float32_t sinVal, fract, in; /* Temporary variables for input, output */
- uint16_t index; /* Index variable */
- float32_t a, b; /* Two nearest output values */
- int32_t n;
- float32_t findex;
-
- /* Special case for small negative inputs */
- if ((x < 0.0f) && (x >= -1.9e-7f)) {
- return x;
- }
-
- /* input x is in radians */
- /* Scale the input to [0 1] range from [0 2*PI] , divide input by 2*pi */
- in = x * 0.159154943092f;
-
- /* Calculation of floor value of input */
- n = (int32_t) in;
-
- /* Make negative values towards -infinity */
- if (x < 0.0f)
- {
- n--;
- }
-
- /* Map input value to [0 1] */
- in = in - (float32_t) n;
-
- /* Calculation of index of the table */
- findex = (float32_t) FAST_MATH_TABLE_SIZE * in;
-
- index = ((uint16_t)findex) & 0x1ff;
-
- /* fractional value calculation */
- fract = findex - (float32_t) index;
-
- /* Read two nearest values of input value from the sin table */
- a = sinTable_f32[index];
- b = sinTable_f32[index+1];
-
- /* Linear interpolation process */
- sinVal = (1.0f-fract)*a + fract*b;
-
- /* Return the output value */
- return (sinVal);
-}
-
-/**
- * @} end of sin group
- */
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q15.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q15.c deleted file mode 100644 index 9eecaa9..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sin_q15.c +++ /dev/null @@ -1,76 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sin_q15.c
- * Description: Fast sine calculation for Q15 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 Q15 data.
- * @param[in] x Scaled input value in radians.
- * @return sin(x).
- *
- * The Q15 input value is in the range [0 +0.9999] and is mapped to a radian value in the range [0 2*pi).
- */
-
-q15_t arm_sin_q15(
- q15_t x)
-{
- q15_t sinVal; /* Temporary variables for input, output */
- int32_t index; /* Index variables */
- q15_t a, b; /* Four nearest output values */
- q15_t fract; /* Temporary values for fractional values */
-
- /* Calculate the nearest index */
- index = (uint32_t)x >> FAST_MATH_Q15_SHIFT;
-
- /* Calculation of fractional value */
- fract = (x - (index << FAST_MATH_Q15_SHIFT)) << 9;
-
- /* Read two nearest values of input value from the sin table */
- a = sinTable_q15[index];
- b = sinTable_q15[index+1];
-
- /* Linear interpolation process */
- sinVal = (q31_t)(0x8000-fract)*a >> 16;
- sinVal = (q15_t)((((q31_t)sinVal << 16) + ((q31_t)fract*b)) >> 16);
-
- return sinVal << 1;
-}
-
-/**
- * @} end of sin group
- */
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
- */
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q15.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q15.c deleted file mode 100644 index 83e4ddd..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q15.c +++ /dev/null @@ -1,144 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sqrt_q15.c
- * Description: Q15 square root function
- *
- * $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 SQRT
- * @{
- */
-
- /**
- * @brief Q15 square root function.
- * @param[in] in input value. The range of the input value is [0 +1) or 0x0000 to 0x7FFF.
- * @param[out] *pOut square root of input value.
- * @return The function returns ARM_MATH_SUCCESS if the input value is positive
- * and ARM_MATH_ARGUMENT_ERROR if the input is negative. For
- * negative inputs, the function returns *pOut = 0.
- */
-
-arm_status arm_sqrt_q15(
- q15_t in,
- q15_t * pOut)
-{
- q15_t number, temp1, var1, signBits1, half;
- q31_t bits_val1;
- float32_t temp_float1;
- union
- {
- q31_t fracval;
- float32_t floatval;
- } tempconv;
-
- number = in;
-
- /* If the input is a positive number then compute the signBits. */
- if (number > 0)
- {
- signBits1 = __CLZ(number) - 17;
-
- /* Shift by the number of signBits1 */
- if ((signBits1 % 2) == 0)
- {
- number = number << signBits1;
- }
- else
- {
- number = number << (signBits1 - 1);
- }
-
- /* Calculate half value of the number */
- half = number >> 1;
- /* Store the number for later use */
- temp1 = number;
-
- /* Convert to float */
- temp_float1 = number * 3.051757812500000e-005f;
- /*Store as integer */
- tempconv.floatval = temp_float1;
- bits_val1 = tempconv.fracval;
- /* Subtract the shifted value from the magic number to give intial guess */
- bits_val1 = 0x5f3759df - (bits_val1 >> 1); /* gives initial guess */
- /* Store as float */
- tempconv.fracval = bits_val1;
- temp_float1 = tempconv.floatval;
- /* Convert to integer format */
- var1 = (q31_t) (temp_float1 * 16384);
-
- /* 1st iteration */
- var1 = ((q15_t) ((q31_t) var1 * (0x3000 -
- ((q15_t)
- ((((q15_t)
- (((q31_t) var1 * var1) >> 15)) *
- (q31_t) half) >> 15))) >> 15)) << 2;
- /* 2nd iteration */
- var1 = ((q15_t) ((q31_t) var1 * (0x3000 -
- ((q15_t)
- ((((q15_t)
- (((q31_t) var1 * var1) >> 15)) *
- (q31_t) half) >> 15))) >> 15)) << 2;
- /* 3rd iteration */
- var1 = ((q15_t) ((q31_t) var1 * (0x3000 -
- ((q15_t)
- ((((q15_t)
- (((q31_t) var1 * var1) >> 15)) *
- (q31_t) half) >> 15))) >> 15)) << 2;
-
- /* Multiply the inverse square root with the original value */
- var1 = ((q15_t) (((q31_t) temp1 * var1) >> 15)) << 1;
-
- /* Shift the output down accordingly */
- if ((signBits1 % 2) == 0)
- {
- var1 = var1 >> (signBits1 / 2);
- }
- else
- {
- var1 = var1 >> ((signBits1 - 1) / 2);
- }
- *pOut = var1;
-
- return (ARM_MATH_SUCCESS);
- }
- /* If the number is a negative number then store zero as its square root value */
- else
- {
- *pOut = 0;
- return (ARM_MATH_ARGUMENT_ERROR);
- }
-}
-
-/**
- * @} end of SQRT group
- */
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q31.c b/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q31.c deleted file mode 100644 index de8c35f..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/FastMathFunctions/arm_sqrt_q31.c +++ /dev/null @@ -1,142 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sqrt_q31.c
- * Description: Q31 square root function
- *
- * $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 SQRT
- * @{
- */
-
-/**
- * @brief Q31 square root function.
- * @param[in] in input value. The range of the input value is [0 +1) or 0x00000000 to 0x7FFFFFFF.
- * @param[out] *pOut square root of input value.
- * @return The function returns ARM_MATH_SUCCESS if the input value is positive
- * and ARM_MATH_ARGUMENT_ERROR if the input is negative. For
- * negative inputs, the function returns *pOut = 0.
- */
-
-arm_status arm_sqrt_q31(
- q31_t in,
- q31_t * pOut)
-{
- q31_t number, temp1, bits_val1, var1, signBits1, half;
- float32_t temp_float1;
- union
- {
- q31_t fracval;
- float32_t floatval;
- } tempconv;
-
- number = in;
-
- /* If the input is a positive number then compute the signBits. */
- if (number > 0)
- {
- signBits1 = __CLZ(number) - 1;
-
- /* Shift by the number of signBits1 */
- if ((signBits1 % 2) == 0)
- {
- number = number << signBits1;
- }
- else
- {
- number = number << (signBits1 - 1);
- }
-
- /* Calculate half value of the number */
- half = number >> 1;
- /* Store the number for later use */
- temp1 = number;
-
- /*Convert to float */
- temp_float1 = number * 4.6566128731e-010f;
- /*Store as integer */
- tempconv.floatval = temp_float1;
- bits_val1 = tempconv.fracval;
- /* Subtract the shifted value from the magic number to give intial guess */
- bits_val1 = 0x5f3759df - (bits_val1 >> 1); /* gives initial guess */
- /* Store as float */
- tempconv.fracval = bits_val1;
- temp_float1 = tempconv.floatval;
- /* Convert to integer format */
- var1 = (q31_t) (temp_float1 * 1073741824);
-
- /* 1st iteration */
- var1 = ((q31_t) ((q63_t) var1 * (0x30000000 -
- ((q31_t)
- ((((q31_t)
- (((q63_t) var1 * var1) >> 31)) *
- (q63_t) half) >> 31))) >> 31)) << 2;
- /* 2nd iteration */
- var1 = ((q31_t) ((q63_t) var1 * (0x30000000 -
- ((q31_t)
- ((((q31_t)
- (((q63_t) var1 * var1) >> 31)) *
- (q63_t) half) >> 31))) >> 31)) << 2;
- /* 3rd iteration */
- var1 = ((q31_t) ((q63_t) var1 * (0x30000000 -
- ((q31_t)
- ((((q31_t)
- (((q63_t) var1 * var1) >> 31)) *
- (q63_t) half) >> 31))) >> 31)) << 2;
-
- /* Multiply the inverse square root with the original value */
- var1 = ((q31_t) (((q63_t) temp1 * var1) >> 31)) << 1;
-
- /* Shift the output down accordingly */
- if ((signBits1 % 2) == 0)
- {
- var1 = var1 >> (signBits1 / 2);
- }
- else
- {
- var1 = var1 >> ((signBits1 - 1) / 2);
- }
- *pOut = var1;
-
- return (ARM_MATH_SUCCESS);
- }
- /* If the number is a negative number then store zero as its square root value */
- else
- {
- *pOut = 0;
- return (ARM_MATH_ARGUMENT_ERROR);
- }
-}
-
-/**
- * @} end of SQRT group
- */
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