tesseract  5.0.0
dotproduct.cpp
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1 // File: dotproduct.cpp
3 // Description: Native dot product function.
4 //
5 // (C) Copyright 2018, Google Inc.
6 // Licensed under the Apache License, Version 2.0 (the "License");
7 // you may not use this file except in compliance with the License.
8 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
16 
17 #include "dotproduct.h"
18 
19 namespace tesseract {
20 
21 // Computes and returns the dot product of the two n-vectors u and v.
22 TFloat DotProductNative(const TFloat *u, const TFloat *v, int n) {
23  TFloat total = 0;
24 #if defined(OPENMP_SIMD) || defined(_OPENMP)
25 #pragma omp simd reduction(+:total)
26 #endif
27  for (int k = 0; k < n; k++) {
28  total += u[k] * v[k];
29  }
30  return total;
31 }
32 
33 } // namespace tesseract
TFloat DotProductNative(const TFloat *u, const TFloat *v, int n)
Definition: dotproduct.cpp:22
double TFloat
Definition: tesstypes.h:39