AUtils Class Reference

provides some generic functions for non-standard arithmetic operations

#include <AUtils.h>

List of all members.

Static Public Member Functions
template<class T>
static T	max (T a, T b)
template<class T>
static T	min (T a, T b)
template<class T>
static T	div_roundup (T a, T b)
template<class T>
static T	bminus (T a, T b)
template<class T, T top>
static T	bplus (T a, T b)
template<class T>
static T	bplus (T a, T b, T top)
template<class T, class CTYPE>
static T	modsum (T *s, CTYPE n, T m)
template<class IT, class FT>
static IT	roundup (FT x)
template<class T>
static T	log2_ceil (T n)

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Member Function Documentation

template<class T> T AUtils::bminus (  T  a, T  b )  [static]

substraction with the modification to return 0 (T()) for negative difference (needs >, -, T())

template<class T> T AUtils::bplus (  T  a, T  b, T  top )  [static]

template<class T, T top> T AUtils::bplus (  T  a, T  b )  [static]

addition with the modification to return top for sums that are larger than top

template<class T> T AUtils::div_roundup (  T  a, T  b )  [static]

returns a divided through b rounded up to nearest "integer" (needs =, --, +, /)

template<class T> T AUtils::log2_ceil (  T  n  )  [static]

compute 2-logarithm of n (rounded up to nearest int), i.e. number of bits needed to store values from {0,...,n-1}

template<class T> T AUtils::max (  T  a, T  b )  [static]

return the maximum of a and b (needs >)

template<class T> T AUtils::min (  T  a, T  b )  [static]

return the minimum of a and b (needs <)

template<class T, class CTYPE> T AUtils::modsum (  T *  s, CTYPE  n, T  m )  [static]

calculate the sum s[0]+...s[n-1] modulo m (needs =, +, % for T and =, CTYPE(), <, ++ for CTYPE)

template<class IT, class FT> IT AUtils::roundup (  FT  x  )  [static]

round up x to nearest integer

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The documentation for this class was generated from the following file:

• AUtils.h

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