tesseract::SIMDDetect Class Reference

#include <simddetect.h>

Static Public Member Functions
static bool	IsAVXAvailable ()
static bool	IsAVX2Available ()
static bool	IsAVX512FAvailable ()
static bool	IsAVX512BWAvailable ()
static bool	IsFMAAvailable ()
static bool	IsSSEAvailable ()
static TESS_API void	Update ()

Detailed Description

Definition at line 31 of file simddetect.h.

Member Function Documentation

IsAVX2Available()

static bool tesseract::SIMDDetect::IsAVX2Available ( )

inlinestatic

Definition at line 38 of file simddetect.h.

                                       {
    return detector.avx2_available_;
  }

IsAVX512BWAvailable()

static bool tesseract::SIMDDetect::IsAVX512BWAvailable ( )

inlinestatic

Definition at line 46 of file simddetect.h.

                                           {
    return detector.avx512BW_available_;
  }

IsAVX512FAvailable()

static bool tesseract::SIMDDetect::IsAVX512FAvailable ( )

inlinestatic

Definition at line 42 of file simddetect.h.

                                          {
    return detector.avx512F_available_;
  }

IsAVXAvailable()

static bool tesseract::SIMDDetect::IsAVXAvailable ( )

inlinestatic

Definition at line 34 of file simddetect.h.

                                      {
    return detector.avx_available_;
  }

IsFMAAvailable()

static bool tesseract::SIMDDetect::IsFMAAvailable ( )

inlinestatic

Definition at line 50 of file simddetect.h.

                                      {
    return detector.fma_available_;
  }

IsSSEAvailable()

static bool tesseract::SIMDDetect::IsSSEAvailable ( )

inlinestatic

Definition at line 54 of file simddetect.h.

                                      {
    return detector.sse_available_;
  }

Update()

void tesseract::SIMDDetect::Update ( )

static

Definition at line 174 of file simddetect.cpp.

                        {
  // Select code for calculation of dot product based on the
  // value of the config variable if that value is not empty.
  const char* dotproduct_method = "generic";
  if (!strcmp(dotproduct.c_str(), "auto")) {
    // Automatic detection. Nothing to be done.
  } else if (!strcmp(dotproduct.c_str(), "generic")) {
    // Generic code selected by config variable.
    SetDotProduct(DotProductGeneric);
    dotproduct_method = "generic";
  } else if (!strcmp(dotproduct.c_str(), "native")) {
    // Native optimized code selected by config variable.
    SetDotProduct(DotProductNative);
    dotproduct_method = "native";
#if defined(HAVE_AVX2)
  } else if (!strcmp(dotproduct.c_str(), "avx2")) {
    // AVX2 selected by config variable.
    SetDotProduct(DotProductAVX, &IntSimdMatrix::intSimdMatrixAVX2);
    dotproduct_method = "avx2";
#endif
#if defined(HAVE_AVX)
  } else if (!strcmp(dotproduct.c_str(), "avx")) {
    // AVX selected by config variable.
    SetDotProduct(DotProductAVX, &IntSimdMatrix::intSimdMatrixSSE);
    dotproduct_method = "avx";
#endif
#if defined(HAVE_FMA)
  } else if (!strcmp(dotproduct.c_str(), "fma")) {
    // FMA selected by config variable.
    SetDotProduct(DotProductFMA, IntSimdMatrix::intSimdMatrix);
    dotproduct_method = "fma";
#endif
#if defined(HAVE_SSE4_1)
  } else if (!strcmp(dotproduct.c_str(), "sse")) {
    // SSE selected by config variable.
    SetDotProduct(DotProductSSE, &IntSimdMatrix::intSimdMatrixSSE);
    dotproduct_method = "sse";
#endif
  } else if (!strcmp(dotproduct.c_str(), "std::inner_product")) {
    // std::inner_product selected by config variable.
    SetDotProduct(DotProductStdInnerProduct);
    dotproduct_method = "std::inner_product";
  } else {
    // Unsupported value of config variable.
    tprintf("Warning, ignoring unsupported config variable value: dotproduct=%s\n",
            dotproduct.c_str());
    tprintf("Support values for dotproduct: auto generic native"
#if defined(HAVE_AVX)
            " avx"
#endif
#if defined(HAVE_SSE4_1)
            " sse"
#endif
            " std::inner_product.\n");
  }
 
  dotproduct.set_value(dotproduct_method);
}

---

The documentation for this class was generated from the following files:

• /tesseract/src/arch/simddetect.h
• /tesseract/src/arch/simddetect.cpp