Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/arch/simddetect.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: simddetect.h
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3 // Description: Architecture detector.
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4 // Author: Stefan Weil (based on code from Ray Smith)
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5 //
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6 // (C) Copyright 2014, Google Inc.
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7 // Licensed under the Apache License, Version 2.0 (the "License");
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8 // you may not use this file except in compliance with the License.
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9 // You may obtain a copy of the License at
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10 // http://www.apache.org/licenses/LICENSE-2.0
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11 // Unless required by applicable law or agreed to in writing, software
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12 // distributed under the License is distributed on an "AS IS" BASIS,
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13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 // See the License for the specific language governing permissions and
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15 // limitations under the License.
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16 ///////////////////////////////////////////////////////////////////////
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17 #ifndef TESSERACT_ARCH_SIMDDETECT_H_
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18 #define TESSERACT_ARCH_SIMDDETECT_H_
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19
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20 #include <tesseract/export.h>
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21 #include "tesstypes.h"
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23 namespace tesseract {
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24
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25 // Function pointer for best calculation of dot product.
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26 using DotProductFunction = TFloat (*)(const TFloat *, const TFloat *, int);
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27 extern DotProductFunction DotProduct;
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28
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29 // Architecture detector. Add code here to detect any other architectures for
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30 // SIMD-based faster dot product functions. Intended to be a single static
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31 // object, but it does no real harm to have more than one.
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32 class SIMDDetect {
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33 public:
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34 // Returns true if AVX is available on this system.
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35 static inline bool IsAVXAvailable() {
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36 return detector.avx_available_;
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37 }
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38 // Returns true if AVX2 (integer support) is available on this system.
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39 static inline bool IsAVX2Available() {
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40 return detector.avx2_available_;
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41 }
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42 // Returns true if AVX512 Foundation (float) is available on this system.
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43 static inline bool IsAVX512FAvailable() {
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44 return detector.avx512F_available_;
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45 }
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46 // Returns true if AVX512 integer is available on this system.
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47 static inline bool IsAVX512BWAvailable() {
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48 return detector.avx512BW_available_;
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49 }
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50 // Returns true if AVX512 Vector Neural Network Instructions are available.
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51 static inline bool IsAVX512VNNIAvailable() {
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52 return detector.avx512VNNI_available_;
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53 }
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54 // Returns true if FMA is available on this system.
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55 static inline bool IsFMAAvailable() {
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56 return detector.fma_available_;
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57 }
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58 // Returns true if SSE4.1 is available on this system.
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59 static inline bool IsSSEAvailable() {
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60 return detector.sse_available_;
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61 }
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62 // Returns true if NEON is available on this system.
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63 static inline bool IsNEONAvailable() {
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64 return detector.neon_available_;
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65 }
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66 // Returns true if RVV is available on this system.
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67 static inline bool IsRVVAvailable() {
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68 return detector.rvv_available_;
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69 }
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70
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71 // Update settings after config variable was set.
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72 static TESS_API void Update();
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73
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74 private:
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75 // Constructor, must set all static member variables.
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76 SIMDDetect();
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77
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78 private:
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79 // Singleton.
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80 static SIMDDetect detector;
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81 // If true, then AVX has been detected.
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82 static TESS_API bool avx_available_;
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83 static TESS_API bool avx2_available_;
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84 static TESS_API bool avx512F_available_;
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85 static TESS_API bool avx512BW_available_;
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86 static TESS_API bool avx512VNNI_available_;
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87 // If true, then FMA has been detected.
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88 static TESS_API bool fma_available_;
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89 // If true, then SSe4.1 has been detected.
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90 static TESS_API bool sse_available_;
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91 // If true, then NEON has been detected.
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92 static TESS_API bool neon_available_;
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93 // If true, then RVV has been detected.
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94 static TESS_API bool rvv_available_;
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95 };
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96
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97 } // namespace tesseract
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98
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99 #endif // TESSERACT_ARCH_SIMDDETECT_H_