/home/stefan/src/github/tesseract-ocr/tesseract/dotproduct-main.cpp File Reference

#include <stdio.h>

Go to the source code of this file.

Functions
double	DotProductAVX (const double *u, const double *v, int n)
double	DotProductSIMD (const double *u, const double *v, int n)
double	DotProduct (const double *u, const double *v, int n)
int	main ()

Variables
const int	max = 65536
double	u [max]
double	v [max]

Function Documentation

DotProduct()

double DotProduct	(	const double *	u,
		const double *	v,
		int	n
	)

Definition at line 90 of file dotproduct-test.cpp.

                                                           {
  double total = 0.0;
  for (int k = 0; k < n; ++k) total += u[k] * v[k];
  return total;
}

DotProductAVX()

double DotProductAVX	(	const double *	u,
		const double *	v,
		int	n
	)

Definition at line 27 of file dotproductavx.cpp.

                                                              {
  fprintf(stderr, "DotProductAVX can't be used on Android\n");
  abort();
}

DotProductSIMD()

double DotProductSIMD	(	const double *	u,
		const double *	v,
		int	n
	)

Definition at line 79 of file dotproduct-test.cpp.

                                                               {
  double total = 0.0;
#ifdef _OPENMP
#pragma omp simd aligned(u, v: 32)
#else
#error
#endif
  for (int k = 0; k < n; ++k) total += u[k] * v[k];
  return total;
}

main()

int main

(

)

Definition at line 12 of file dotproduct-main.cpp.

           {
#if 0
  // 5.6
  printf("DotProduct\n");
  for (unsigned i = 0; i < 1000000; i++)
    DotProduct(u, v, max);
#elif 0
  // 5.6
  printf("DotProductSIMD\n");
  for (unsigned i = 0; i < 1000000; i++)
    DotProductSIMD(u, v, max);
#else
  // 1.5
  printf("DotProductAVX\n");
  for (unsigned i = 0; i < 1000000; i++)
    DotProductAVX(u, v, max);
#endif
  return 0;
}

Variable Documentation

max

const int max = 65536

Definition at line 3 of file dotproduct-main.cpp.

u

double u[max]

Definition at line 5 of file dotproduct-main.cpp.

v

double v[max]

Definition at line 6 of file dotproduct-main.cpp.