SCIPInterval Class Reference

Detailed Description

an interval that extends the SCIP_INTERVAL struct

Used by various methods to allow calculating with intervals as with ordinary numbers.

Definition at line 42 of file intervalarithext.h.

#include <intervalarithext.h>

Public Member Functions
	SCIPInterval ()
	SCIPInterval (const SCIP_INTERVAL &x)
	SCIPInterval (SCIP_Real infinum, SCIP_Real supremum)
	SCIPInterval (SCIP_Real number)
void	setBounds (SCIP_Real newinf, SCIP_Real newsup)
bool	operator== (const SCIP_INTERVAL &y) const
bool	operator!= (const SCIP_INTERVAL &y) const
bool	operator== (const SCIP_Real &y) const
SCIPInterval &	operator+= (const SCIPInterval &y)
SCIPInterval &	operator-= (const SCIPInterval &y)
SCIPInterval &	operator*= (const SCIPInterval &y)
SCIPInterval &	operator/= (const SCIPInterval &y)
SCIPInterval &	operator= (const SCIP_Real &y)
SCIPInterval &	operator= (const SCIP_INTERVAL &y)

Static Public Attributes
static SCIP_Real	infinity = SCIP_DEFAULT_INFINITY

Constructor & Destructor Documentation

SCIPInterval::SCIPInterval ( )

inline

default constructor -> gives entire interval

Definition at line 52 of file intervalarithext.h.

References infinity.

SCIPInterval::SCIPInterval ( const SCIP_INTERVAL &  x )

inline

constructor for an SCIP_INTERVAL struct

Parameters

x	interval to copy

Definition at line 58 of file intervalarithext.h.

SCIPInterval::SCIPInterval ( SCIP_Real  infinum, SCIP_Real  supremum  )

inline

constructor for an interval giving pointwise bounds

Parameters

infinum	lower bound of interval
supremum	upper bound of interval

Definition at line 66 of file intervalarithext.h.

SCIPInterval::SCIPInterval ( SCIP_Real  number )

inline

constructor for a singleton

Parameters

number

number to be represented by interval

Definition at line 75 of file intervalarithext.h.

Member Function Documentation

void SCIPInterval::setBounds ( SCIP_Real  newinf, SCIP_Real  newsup  )

inline

sets interval bounds

Parameters

newinf	lower bound of interval
newsup	upper bound of interval

Definition at line 83 of file intervalarithext.h.

bool SCIPInterval::operator== ( const SCIP_INTERVAL &  y ) const

inline

returns whether this interval is equal to another one

Parameters

y	interval to compare with

Definition at line 92 of file intervalarithext.h.

References infinity.

bool SCIPInterval::operator!= ( const SCIP_INTERVAL &  y ) const

inline

returns whether this interval is not equal to another one

Parameters

y	interval to compare with

Definition at line 106 of file intervalarithext.h.

bool SCIPInterval::operator== ( const SCIP_Real &  y ) const

inline

returns whether this interval is equal to a given number

Parameters

y	number to compare with

Definition at line 114 of file intervalarithext.h.

References infinity.

SCIPInterval& SCIPInterval::operator+= ( const SCIPInterval &  y )

inline

adds another interval to this one

Parameters

y	interval to add in

Definition at line 124 of file intervalarithext.h.

References infinity.

SCIPInterval& SCIPInterval::operator-= ( const SCIPInterval &  y )

inline

subtracts an interval from this one

Parameters

y	interval to substract

Definition at line 133 of file intervalarithext.h.

References infinity.

SCIPInterval& SCIPInterval::operator*= ( const SCIPInterval &  y )

inline

multiplies an interval with this one

Parameters

y	interval to multiply with

Definition at line 142 of file intervalarithext.h.

References infinity.

SCIPInterval& SCIPInterval::operator/= ( const SCIPInterval &  y )

inline

divides this interval by another one

Parameters

y	interval to divide by

Definition at line 151 of file intervalarithext.h.

References infinity.

SCIPInterval& SCIPInterval::operator= ( const SCIP_Real &  y )

inline

assigns a number to this interval

Parameters

y	new value for both interval bounds

Definition at line 160 of file intervalarithext.h.

SCIPInterval& SCIPInterval::operator= ( const SCIP_INTERVAL &  y )

inline

assign an interval to this interval

Parameters

y	new value for this interval

Definition at line 169 of file intervalarithext.h.

Field Documentation

SCIP_Real SCIPInterval::infinity = SCIP_DEFAULT_INFINITY

static

value to use for infinity

Currently a global variable, thus use with care!

Definition at line 49 of file intervalarithext.h.

Referenced by abs(), exp(), exprEvalUser(), log(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), operator==(), pow(), SCIPexprintEvalInt(), SCIPInterval(), sign(), signpow(), sqrt(), and square().