2 /* ----------------------------------------------------------------------
5  * Description:  Bray-Curtis distance between two vectors
10  * Target Processor: Cortex-M and Cortex-A cores
11  * -------------------------------------------------------------------- */
13  * Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
15  * SPDX-License-Identifier: Apache-2.0
21  * www.apache.org/licenses/LICENSE-2.0
36   (*((MAT)->pData + (MAT)->numCols*(R) + (C)))
40    ((*((pWindow)->pData + (pWindow)->numCols*(R) + (C)))==1))
91    const uint32_t queryLength = pDistance -> numRows;  in arm_dtw_distance_f32()
92    const uint32_t templateLength = pDistance -> numCols;  in arm_dtw_distance_f32()
95    float32_t *temp = pDTW->pData;  in arm_dtw_distance_f32()
98      for(uint32_t t= 0; t < templateLength; t++)  in arm_dtw_distance_f32()  local
104    pDTW->pData[0] = E(pDistance,0,0);  in arm_dtw_distance_f32()
111      E(pDTW,q,0) = E(pDTW,q-1,0) + E(pDistance,q,0);  in arm_dtw_distance_f32()
114    for(uint32_t t = 1; t < templateLength; t++)  in arm_dtw_distance_f32()  local
116      if (!WIN(0,t))  in arm_dtw_distance_f32()
120      E(pDTW,0,t) = E(pDTW,0,t-1) + E(pDistance,0,t);  in arm_dtw_distance_f32()
126      for(uint32_t t = 1; t < templateLength; t++)  in arm_dtw_distance_f32()  local
128        if (!WIN(q,t))  in arm_dtw_distance_f32()
132        E(pDTW,q,t) =   in arm_dtw_distance_f32()
133             MIN(E(pDTW,q-1,t-1) + 2.0f * E(pDistance,q,t),  in arm_dtw_distance_f32()
134             MIN(E(pDTW,q,t-1)   +        E(pDistance,q,t),  in arm_dtw_distance_f32()
135                 E(pDTW,q-1,t)   +        E(pDistance,q,t)));  in arm_dtw_distance_f32()
139    if (E(pDTW,queryLength-1,templateLength-1) == F32_MAX)  in arm_dtw_distance_f32()
144    result = E(pDTW,queryLength-1,templateLength-1);  in arm_dtw_distance_f32()