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Gecode::Int::Limits Namespace Reference
[Integer variables]

Numerical limits for integer variables. More...

Functions

bool valid (int n)
 Return whether n is in range.
bool valid (long long int n)
 Return whether n is in range.
void check (int n, const char *l)
 Check whether n is in range, otherwise throw out of limits with information l.
void check (long long int n, const char *l)
 Check whether n is in range, otherwise throw out of limits with information l.
void positive (int n, const char *l)
 Check whether n is in range and strictly positive, otherwise throw out of limits with information l.
void positive (long long int n, const char *l)
 Check whether n is in range and strictly positive, otherwise throw out of limits with information l.
void nonnegative (int n, const char *l)
 Check whether n is in range and nonnegative, otherwise throw out of limits with information l.
void nonnegative (long long int n, const char *l)
 Check whether n is in integer range and nonnegative, otherwise throw out of limits exception with information l.
bool overflow_add (int n, int m)
 Check whether adding n and m would overflow.
bool overflow_add (long long int n, long long int m)
 Check whether adding n and m would overflow.
bool overflow_sub (int n, int m)
 Check whether subtracting m from n would overflow.
bool overflow_sub (long long int n, long long int m)
 Check whether subtracting m from n would overflow.
bool overflow_mul (int n, int m)
 Check whether multiplying n and m would overflow.
bool overflow_mul (long long int n, long long int m)
 Check whether multiplying n and m would overflow.

Variables

const int max = INT_MAX - 1
 Largest allowed integer value.
const int min = -max
 Smallest allowed integer value.
const int infinity = max + 1
 Infinity for integers.
const long long int llmax = LLONG_MAX - 1
 Largest allowed long long integer value.
const long long int llmin = -llmax
 Smallest allowed long long integer value.
const long long int llinfinity = llmax + 1
 Infinity for long long integers.

Detailed Description

Numerical limits for integer variables.

The integer limits are chosen such changing the sign is always possible without overflow.


Function Documentation

bool Gecode::Int::Limits::valid ( int  n  )  [inline]

Return whether n is in range.

Definition at line 37 of file limits.hpp.

bool Gecode::Int::Limits::valid ( long long int  n  )  [inline]

Return whether n is in range.

Definition at line 41 of file limits.hpp.

void Gecode::Int::Limits::check ( int  n,
const char *  l 
) [inline]

Check whether n is in range, otherwise throw out of limits with information l.

Definition at line 46 of file limits.hpp.

void Gecode::Int::Limits::check ( long long int  n,
const char *  l 
) [inline]

Check whether n is in range, otherwise throw out of limits with information l.

Definition at line 51 of file limits.hpp.

void Gecode::Int::Limits::positive ( int  n,
const char *  l 
) [inline]

Check whether n is in range and strictly positive, otherwise throw out of limits with information l.

Definition at line 57 of file limits.hpp.

void Gecode::Int::Limits::positive ( long long int  n,
const char *  l 
) [inline]

Check whether n is in range and strictly positive, otherwise throw out of limits with information l.

Definition at line 62 of file limits.hpp.

void Gecode::Int::Limits::nonnegative ( int  n,
const char *  l 
) [inline]

Check whether n is in range and nonnegative, otherwise throw out of limits with information l.

Definition at line 68 of file limits.hpp.

void Gecode::Int::Limits::nonnegative ( long long int  n,
const char *  l 
) [inline]

Check whether n is in integer range and nonnegative, otherwise throw out of limits exception with information l.

Definition at line 73 of file limits.hpp.

bool Gecode::Int::Limits::overflow_add ( int  n,
int  m 
) [inline]

Check whether adding n and m would overflow.

Definition at line 79 of file limits.hpp.

bool Gecode::Int::Limits::overflow_add ( long long int  n,
long long int  m 
) [inline]

Check whether adding n and m would overflow.

Definition at line 85 of file limits.hpp.

bool Gecode::Int::Limits::overflow_sub ( int  n,
int  m 
) [inline]

Check whether subtracting m from n would overflow.

Definition at line 93 of file limits.hpp.

bool Gecode::Int::Limits::overflow_sub ( long long int  n,
long long int  m 
) [inline]

Check whether subtracting m from n would overflow.

Definition at line 99 of file limits.hpp.

bool Gecode::Int::Limits::overflow_mul ( int  n,
int  m 
) [inline]

Check whether multiplying n and m would overflow.

Definition at line 107 of file limits.hpp.

bool Gecode::Int::Limits::overflow_mul ( long long int  n,
long long int  m 
) [inline]

Check whether multiplying n and m would overflow.

Definition at line 114 of file limits.hpp.


Variable Documentation

const int Gecode::Int::Limits::max = INT_MAX - 1

Largest allowed integer value.

Definition at line 116 of file int.hh.

Smallest allowed integer value.

Definition at line 118 of file int.hh.

Infinity for integers.

Definition at line 120 of file int.hh.

const long long int Gecode::Int::Limits::llmax = LLONG_MAX - 1

Largest allowed long long integer value.

Definition at line 122 of file int.hh.

const long long int Gecode::Int::Limits::llmin = -llmax

Smallest allowed long long integer value.

Definition at line 124 of file int.hh.

const long long int Gecode::Int::Limits::llinfinity = llmax + 1

Infinity for long long integers.

Definition at line 126 of file int.hh.