diff options
author | Clyne Sullivan <clyne@bitgloo.com> | 2025-01-29 21:34:25 -0500 |
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committer | Clyne Sullivan <clyne@bitgloo.com> | 2025-01-29 21:34:25 -0500 |
commit | 5b81bc8ccbd342b8566d88fc9f17a73aec03b5b6 (patch) | |
tree | cc57486912cfa74c6440d8b97c28f451ec787d78 /Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c |
initial commit
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c')
-rw-r--r-- | Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c b/Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c new file mode 100644 index 0000000..26617a5 --- /dev/null +++ b/Drivers/CMSIS/DSP/Source/DistanceFunctions/arm_jaccard_distance.c @@ -0,0 +1,72 @@ + +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_jaccard_distance.c + * Description: Jaccard distance between two vectors + * + * $Date: 23 April 2021 + * $Revision: V1.9.0 + * + * Target Processor: Cortex-M and Cortex-A cores + * -------------------------------------------------------------------- */ +/* + * Copyright (C) 2010-2021 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 "dsp/distance_functions.h" +#include <limits.h> +#include <math.h> + + + +extern void arm_boolean_distance_TT_TF_FT(const uint32_t *pA + , const uint32_t *pB + , uint32_t numberOfBools + , uint32_t *cTT + , uint32_t *cTF + , uint32_t *cFT + ); + + +/** + @addtogroup BoolDist + @{ + */ + +/** + * @brief Jaccard distance between two vectors + * + * @param[in] pA First vector of packed booleans + * @param[in] pB Second vector of packed booleans + * @param[in] numberOfBools Number of booleans + * @return distance + * + */ + +float32_t arm_jaccard_distance(const uint32_t *pA, const uint32_t *pB, uint32_t numberOfBools) +{ + uint32_t ctt=0,ctf=0,cft=0; + + arm_boolean_distance_TT_TF_FT(pA, pB, numberOfBools, &ctt, &ctf, &cft); + + return(1.0*(ctf + cft) / (ctt + cft + ctf)); +} + + +/** + * @} end of BoolDist group + */ |