math_utils.h File Reference

Useful macros for maths. More...

#include <cmath>
#include <limits>

Include dependency graph for math_utils.h:

Go to the source code of this file.

Namespaces
namespace	gum
	gum is the global namespace for all aGrUM entities

Macros
#define	M_LOG2E   1.4426950408889634074 /* log_2 e */
#define	M_PI   3.14159265358979323846
#define	M_LN2   0.69314718055994530942 /* log_e 2 */
#define	GUM_LOG_SQRT_2PI   .91893853320467274177
#define	GUM_LOG2_OR_0(x)

Functions
template<typename T>
bool	gum::isfinite (T arg)

Detailed Description

Useful macros for maths.

Author

Christophe GONZALES(_at_AMU) and Pierre-Henri WUILLEMIN(_at_LIP6)

Definition in file math_utils.h.

Macro Definition Documentation

GUM_LOG2_OR_0

#define GUM_LOG2_OR_0

(

x

)

Value:

((x == 0.0) ? 0.0 : std::log2((x)))

Definition at line 70 of file math_utils.h.

Referenced by gum::ExactBNdistance< GUM_SCALAR >::computeKL_(), gum::Tensor< GUM_SCALAR >::entropy(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyXgivenY(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyXgivenYZ(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyXgivenZ(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyXYgivenZ(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyYgivenX(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::entropyYgivenZ(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::mutualInformationXY(), gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::mutualInformationXYgivenZ(), and gum::InformationTheory< INFERENCE_ENGINE, GUM_SCALAR >::variationOfInformationXY().

GUM_LOG_SQRT_2PI

#define GUM_LOG_SQRT_2PI   .91893853320467274177

Definition at line 67 of file math_utils.h.

M_LN2

#define M_LN2   0.69314718055994530942 /* log_e 2 */

Definition at line 63 of file math_utils.h.

Referenced by gum::VariableLog2ParamComplexity::CnrToFile(), gum::learning::Miic::findBestContributor_(), gum::learning::SimpleMiic::findBestContributor_(), and gum::VariableLog2ParamComplexity::log2Cnr().

M_LOG2E

#define M_LOG2E   1.4426950408889634074 /* log_2 e */

Definition at line 55 of file math_utils.h.

M_PI

#define M_PI   3.14159265358979323846

Definition at line 59 of file math_utils.h.