QuadExpr Class Reference

#include <QuadExpr.h>

Public Member Functions
	QuadExpr (double v)
double	Quadratic () const
double	Linear () const
double	Constant () const
double	Eval (double x) const
QuadExpr &	operator+= (const QuadExpr &e)
QuadExpr &	operator-= (const QuadExpr &e)
QuadExpr &	operator*= (const QuadExpr &e)
QuadExpr	operator+ (const QuadExpr &e) const
QuadExpr	operator- (const QuadExpr &e) const
QuadExpr	operator* (const QuadExpr &e) const
QuadExpr	operator+ (double v) const
QuadExpr	operator- (double v) const
QuadExpr	operator* (double v) const

Static Public Member Functions
static QuadExpr	X ()

Protected Attributes
double	a
double	b
double	c

Detailed Description

Definition at line 8 of file QuadExpr.h.

Constructor & Destructor Documentation

QuadExpr::QuadExpr ( double  v )

inline

Definition at line 11 of file QuadExpr.h.

: a(0), b(0), c(v) {}

Member Function Documentation

double QuadExpr::Constant ( ) const

inline

Definition at line 17 of file QuadExpr.h.

{return c;}

double QuadExpr::Eval

(

double

x

)

const

Definition at line 69 of file QuadExpr.cxx.

{
  return a*x*x + b*x + c;
}

double QuadExpr::Linear ( ) const

inline

Definition at line 16 of file QuadExpr.h.

{return b;}

QuadExpr QuadExpr::operator*

(

const QuadExpr &

e

)

const

Definition at line 45 of file QuadExpr.cxx.

{
  if((b != 0 && e.a != 0) ||
     (a != 0 && e.b != 0) ||
     (a != 0 && e.a != 0)){
    std::cout << "(" << *this << ") * (" << e << ")"
              << " does not result in a quadratic expression." << std::endl;
    abort();
  }

  QuadExpr ret(0);
  ret.c = c*e.c;
  ret.b = c*e.b + b*e.c;
  ret.a = c*e.a + a*e.c + b*e.b;

  return ret;
}

QuadExpr QuadExpr::operator* ( double  v ) const

inline

Definition at line 31 of file QuadExpr.h.

{return (*this)*QuadExpr(v);}

QuadExpr & QuadExpr::operator*=

(

const QuadExpr &

e

)

Definition at line 63 of file QuadExpr.cxx.

{
  *this = *this * e;
  return *this;
}

QuadExpr QuadExpr::operator+

(

const QuadExpr &

e

)

const

Definition at line 23 of file QuadExpr.cxx.

{
  QuadExpr ret = *this;
  ret += e;
  return ret;
}

QuadExpr QuadExpr::operator+ ( double  v ) const

inline

Definition at line 29 of file QuadExpr.h.

{return (*this)+QuadExpr(v);}

QuadExpr & QuadExpr::operator+=

(

const QuadExpr &

e

)

Definition at line 15 of file QuadExpr.cxx.

{
  a += e.a;
  b += e.b;
  c += e.c;
  return *this;
}

QuadExpr QuadExpr::operator-

(

const QuadExpr &

e

)

const

Definition at line 38 of file QuadExpr.cxx.

{
  QuadExpr ret = *this;
  ret -= e;
  return ret;
}

QuadExpr QuadExpr::operator- ( double  v ) const

inline

Definition at line 30 of file QuadExpr.h.

{return (*this)-QuadExpr(v);}

QuadExpr & QuadExpr::operator-=

(

const QuadExpr &

e

)

Definition at line 30 of file QuadExpr.cxx.

{
  a -= e.a;
  b -= e.b;
  c -= e.c;
  return *this;
}

double QuadExpr::Quadratic ( ) const

inline

Definition at line 15 of file QuadExpr.h.

{return a;}

QuadExpr QuadExpr::X ( )

static

Definition at line 8 of file QuadExpr.cxx.

{
  QuadExpr ret(0);
  ret.b = 1;
  return ret;
}

Member Data Documentation

double QuadExpr::a

protected

Definition at line 34 of file QuadExpr.h.

double QuadExpr::b

protected

Definition at line 34 of file QuadExpr.h.

double QuadExpr::c

protected

Definition at line 34 of file QuadExpr.h.

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

• larreco/larreco/SpacePointSolver/QuadExpr.h
• larreco/larreco/SpacePointSolver/QuadExpr.cxx