lloyal::metrics::detail Namespace Reference

Functions
float	max_finite (const float *a, int n)
	Find maximum finite value in array Used for log-sum-exp shift to prevent overflow.
float	log_sum_exp (const float *a, int n, float shift)
	Numerically stable log-sum-exp Computes log(Σ exp(aᵢ)) using shift trick to avoid overflow.

Variables
constexpr float	LN2 = 0.693147180559945309417232121458176568f

Function Documentation

log_sum_exp()

float lloyal::metrics::detail::log_sum_exp ( const float *  a, int  n, float  shift  )

inline

Numerically stable log-sum-exp Computes log(Σ exp(aᵢ)) using shift trick to avoid overflow.

Parameters

a	Array of log-space values
n	Array length
shift	Max value for numerical stability

Returns

log(Σ exp(aᵢ))

Examples

/home/runner/work/liblloyal/liblloyal/include/lloyal/metrics.hpp.

Definition at line 76 of file metrics.hpp.

max_finite()

float lloyal::metrics::detail::max_finite ( const float *  a, int  n  )

inline

Find maximum finite value in array Used for log-sum-exp shift to prevent overflow.

Examples

/home/runner/work/liblloyal/liblloyal/include/lloyal/metrics.hpp.

Definition at line 58 of file metrics.hpp.

Variable Documentation

LN2

constexpr float lloyal::metrics::detail::LN2 = 0.693147180559945309417232121458176568f

constexpr

Examples

/home/runner/work/liblloyal/liblloyal/include/lloyal/metrics.hpp.

Definition at line 52 of file metrics.hpp.