fp_utils.h File Reference

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Classes
class	ScopedFloatingPointEnv

Namespaces
	operations_research
	Collection of objects used to extend the Constraint Solver library.

Macros
#define	EXPECT_COMPARABLE(expected, obtained, epsilon)
#define	EXPECT_NOTCOMPARABLE(expected, obtained, epsilon)

Functions
template<typename FloatType >
bool	IsPositiveOrNegativeInfinity (FloatType x)
template<typename FloatType >
bool	AreWithinAbsoluteOrRelativeTolerances (FloatType x, FloatType y, FloatType relative_tolerance, FloatType absolute_tolerance)
template<typename FloatType >
bool	AreWithinAbsoluteTolerance (FloatType x, FloatType y, FloatType absolute_tolerance)
template<typename FloatType >
bool	IsSmallerWithinTolerance (FloatType x, FloatType y, FloatType tolerance)
template<typename FloatType >
bool	IsIntegerWithinTolerance (FloatType x, FloatType tolerance)
void	GetBestScalingOfDoublesToInt64 (const std::vector< double > &input, int64_t max_absolute_sum, double *scaling_factor, double *max_relative_coeff_error)
double	GetBestScalingOfDoublesToInt64 (const std::vector< double > &input, const std::vector< double > &lb, const std::vector< double > &ub, int64_t max_absolute_sum)
void	ComputeScalingErrors (const std::vector< double > &input, const std::vector< double > &lb, const std::vector< double > &ub, double scaling_factor, double *max_relative_coeff_error, double *max_scaled_sum_error)
int64_t	ComputeGcdOfRoundedDoubles (const std::vector< double > &x, double scaling_factor)
template<typename FloatType >
FloatType	Interpolate (FloatType x, FloatType y, FloatType alpha)
int	fast_ilogb (double value)
double	fast_scalbn (double value, int exponent)
void	fast_scalbn_inplace (double &mutable_value, int exponent)

Macro Definition Documentation

EXPECT_COMPARABLE

#define EXPECT_COMPARABLE	(		expected,
			obtained,
			epsilon
	)

Value:

EXPECT_TRUE(operations_research::AreWithinAbsoluteOrRelativeTolerances( \
      expected, obtained, epsilon, epsilon))                              \
      << obtained << " != expected value " << expected                    \
      << " within epsilon = " << epsilon;

Definition at line 174 of file fp_utils.h.

EXPECT_NOTCOMPARABLE

#define EXPECT_NOTCOMPARABLE	(		expected,
			obtained,
			epsilon
	)

Value:

EXPECT_FALSE(operations_research::AreWithinAbsoluteOrRelativeTolerances( \
      expected, obtained, epsilon, epsilon))                               \
      << obtained << " == expected value " << expected                     \
      << " within epsilon = " << epsilon;

Definition at line 180 of file fp_utils.h.