steghide  0.5.1
Static Public Member Functions | List of all members
AUtils Class Reference

provides some generic functions for non-standard arithmetic operations

#include <AUtils.h>

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)
 

Member Function Documentation

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

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

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

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

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

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

template<class T >
T AUtils::log2_ceil ( 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 ( a,
b 
)
static

return the maximum of a and b (needs >)

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

return the minimum of a and b (needs <)

template<class T , class CTYPE >
T AUtils::modsum ( T *  s,
CTYPE  n,
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


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