newmatrm.h File Reference

Go to the source code of this file.

Classes
class	RectMatrixRowCol
class	RectMatrixRow
class	RectMatrixCol
class	RectMatrixDiag

Macros
#define	NEWMATRM_LIB   0

Functions
Real	square (Real x)
Real	sign (Real x, Real y)
Real	pythag (Real f, Real g, Real &c, Real &s)
void	GivensRotation (Real cGivens, Real sGivens, Real &x, Real &y)
void	GivensRotationR (Real cGivens, Real sGivens, Real &x, Real &y)

Macro Definition Documentation

NEWMATRM_LIB

#define NEWMATRM_LIB   0

Definition at line 6 of file newmatrm.h.

Function Documentation

GivensRotation()

void GivensRotation ( Real  cGivens, Real  sGivens, Real &  x, Real &  y  )

inline

Definition at line 116 of file newmatrm.h.

References x, and y.

Referenced by DowndateCholesky(), and UpdateCholesky().

{
   // allow for possibility &x = &y
   Real tmp0 = cGivens * x + sGivens * y;
   Real tmp1 = -sGivens * x + cGivens * y;
   x = tmp0; y = tmp1;
}

GivensRotationR()

void GivensRotationR ( Real  cGivens, Real  sGivens, Real &  x, Real &  y  )

inline

Definition at line 124 of file newmatrm.h.

References x, and y.

Referenced by LeftCircularUpdateCholesky(), and RightCircularUpdateCholesky().

{
   // also change sign of y
   // allow for possibility &x = &y
   Real tmp0 = cGivens * x + sGivens * y;
   Real tmp1 = sGivens * x - cGivens * y;
   x = tmp0; y = tmp1;
}   

pythag()

Real pythag	(	Real	f,
		Real	g,
		Real &	c,
		Real &	s
	)

Definition at line 186 of file newmatrm.cpp.

References REPORT, and sq.

Referenced by DowndateCholesky(), LeftCircularUpdateCholesky(), RightCircularUpdateCholesky(), SVD(), and UpdateCholesky().

{
   if (f==0 && g==0) { c=1.0; s=0.0; return 0.0; }
   Real af = f>=0 ? f : -f;
   Real ag = g>=0 ? g : -g;
   if (ag<af)
   {
      REPORT
      Real h = g/f; Real sq = std::sqrt(1.0+h*h);
      if (f<0) sq = -sq;           // make return value non-negative
      c = 1.0/sq; s = h/sq; return sq*f;
   }
   else
   {
      REPORT
      Real h = f/g; Real sq = std::sqrt(1.0+h*h);
      if (g<0) sq = -sq;
      s = 1.0/sq; c = h/sq; return sq*g;
   }
}

sign()

Real sign ( Real  x, Real  y  )

inline

Definition at line 108 of file newmatrm.h.

References x, and y.

Referenced by LogAndSign::ChangeSign(), decodeSexagesimalDms(), LogAndSign::LogAndSign(), LogAndSign::operator*=(), ossimAdrgHeader::parseLatitudeString(), ossimAdrgHeader::parseLongitudeString(), LogAndSign::PowEq(), ossimFftw3Filter::runFft(), LogAndSign::Sign(), SVD(), and LogAndSign::Value().

   { return (y>=0) ? x : -x; }                    // assume x >=0

square()

Real square ( Real  x )

inline

Definition at line 107 of file newmatrm.h.

References x.

{ return x*x; }