utility.h File Reference

Some utility functions. More...

#include <vector>
#include "object.h"

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Functions
bool	ldivide (std::vector< std::vector< REAL > > &A, const std::vector< REAL > &b, std::vector< REAL > &x)
template<class N>
bool	gray_next (std::vector< N > &v, typename std::vector< N >::size_type &p)
	Gray code: start from all 0's, and iteratively go through all numbers.
template<class N>
bool	gray_next (std::vector< N > &v)

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Detailed Description

Some utility functions.

Id

utility.h 2631 2006-02-08 21:58:14Z ling

Definition in file utility.h.

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Function Documentation

bool gray_next (  std::vector< N > &  v  )

Definition at line 47 of file utility.h. References gray_next().

bool gray_next (  std::vector< N > &  v, typename std::vector< N >::size_type &  p )

Gray code: start from all 0's, and iteratively go through all numbers. Definition at line 22 of file utility.h. Referenced by gray_next(), and AdaBoost_ECOC::max_cut().

bool ldivide (  std::vector< std::vector< REAL > > &  A, const std::vector< REAL > &  b, std::vector< REAL > &  x )

Solve inv(A) * b, when A is symmetric and positive-definite. Actually we only need the upper triangular part of A.

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