nnfw::misc::fp32 Namespace Reference

Functions
float	relative_diff (float lhs, float rhs)
	Get the difference between two float values as a relative value.
bool	epsilon_equal (float expected, float obtained, uint32_t tolerance=1)
	Verify that an obtained float value is equal to the expected float value by using FLT_EPSILON.
bool	absolute_epsilon_equal (float expected, float obtained, float tolerance=0.001)
	Verify that an obtained float value is equal to the expected float value by comparing absolute tolerance value.

Function Documentation

absolute_epsilon_equal()

bool nnfw::misc::fp32::absolute_epsilon_equal ( float  expected, float  obtained, float  tolerance = 0.001  )

inline

Verify that an obtained float value is equal to the expected float value by comparing absolute tolerance value.

Parameters

[in]	expected	An expected float value to be compared
[in]	obtained	An obtained float value to be compared
[in]	tolerance	A tolerance value

Returns

true if both values are equal, otherwise false

Definition at line 82 of file fp32.h.

{
  if (std::isnan(expected) && std::isnan(obtained))
  {
    return true;
  }
 
  // Let's use absolute epsilon comparision
  const auto diff = std::fabs(expected - obtained);
 
  return diff <= tolerance;
}

epsilon_equal()

bool nnfw::misc::fp32::epsilon_equal ( float  expected, float  obtained, uint32_t  tolerance = 1  )

inline

Verify that an obtained float value is equal to the expected float value by using FLT_EPSILON.

Parameters

[in]	expected	An expected float value to be compared
[in]	obtained	An obtained float value to be compared
[in]	tolerance	A tolerance value

Returns

true if both values are equal, otherwise false

Definition at line 60 of file fp32.h.

{
  if (std::isnan(expected) && std::isnan(obtained))
  {
    return true;
  }
 
  // Let's use relative epsilon comparision
  const auto diff = std::fabs(expected - obtained);
  const auto max = std::max(std::fabs(expected), std::fabs(obtained));
 
  return diff <= (max * FLT_EPSILON * tolerance);
}

relative_diff()

float nnfw::misc::fp32::relative_diff ( float  lhs, float  rhs  )

inline

Get the difference between two float values as a relative value.

Parameters

[in]	lhs	A float value to be compared
[in]	rhs	A float value to be compared

Returns

A relative value of difference between two float values.

Definition at line 44 of file fp32.h.

{
  const auto diff = std::fabs(lhs - rhs);
  const auto base = std::max(std::fabs(lhs), std::fabs(rhs));
 
  return diff / base;
}