first_aligned.cpp File Reference

#include "main.h"

Classes
struct	some_non_vectorizable_type

Functions
template<typename Scalar >
void	test_first_aligned_helper (Scalar *array, int size)
template<typename Scalar >
void	test_none_aligned_helper (Scalar *array, int size)
	EIGEN_DECLARE_TEST (first_aligned)

Function Documentation

EIGEN_DECLARE_TEST()

EIGEN_DECLARE_TEST

(

first_aligned

)

                                  {
  EIGEN_ALIGN16 float array_float[100];
  test_first_aligned_helper(array_float, 50);
  test_first_aligned_helper(array_float + 1, 50);
  test_first_aligned_helper(array_float + 2, 50);
  test_first_aligned_helper(array_float + 3, 50);
  test_first_aligned_helper(array_float + 4, 50);
  test_first_aligned_helper(array_float + 5, 50);
 
  EIGEN_ALIGN16 double array_double[100];
  test_first_aligned_helper(array_double, 50);
  test_first_aligned_helper(array_double + 1, 50);
  test_first_aligned_helper(array_double + 2, 50);
 
  double *array_double_plus_4_bytes = (double *)(std::uintptr_t(array_double) + 4);
  test_none_aligned_helper(array_double_plus_4_bytes, 50);
  test_none_aligned_helper(array_double_plus_4_bytes + 1, 50);
 
  some_non_vectorizable_type array_nonvec[100];
  test_first_aligned_helper(array_nonvec, 100);
  test_none_aligned_helper(array_nonvec, 100);
}

References EIGEN_ALIGN16, test_first_aligned_helper(), and test_none_aligned_helper().

test_first_aligned_helper()

template<typename Scalar >

void test_first_aligned_helper	(	Scalar *	array,
		int	size
	)

                                                        {
  const int packet_size = sizeof(Scalar) * internal::packet_traits<Scalar>::size;
  VERIFY(((size_t(array) + sizeof(Scalar) * internal::first_default_aligned(array, size)) % packet_size) == 0);
}

References Eigen::internal::first_default_aligned(), size, and VERIFY.

Referenced by EIGEN_DECLARE_TEST().

test_none_aligned_helper()

template<typename Scalar >

void test_none_aligned_helper	(	Scalar *	array,
		int	size
	)

                                                       {
  EIGEN_UNUSED_VARIABLE(array);
  EIGEN_UNUSED_VARIABLE(size);
  VERIFY(internal::packet_traits<Scalar>::size == 1 || internal::first_default_aligned(array, size) == size);
}

References EIGEN_UNUSED_VARIABLE, Eigen::internal::first_default_aligned(), size, and VERIFY.

Referenced by EIGEN_DECLARE_TEST().