#include <math_Crout.hxx>
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
Standard_EXPORT | math_Crout (const math_Matrix &A, const Standard_Real MinPivot=1.0e-20) |
Given an input matrix A, this algorithm inverts A by the Crout algorithm. The user can give only the inferior triangle for the implementation. A can be decomposed like this: A = L * D * T(L) where L is triangular inferior and D is diagonal. If one element of A is less than MinPivot, A is considered as singular. Exception NotSquare is raised if A is not a square matrix. . | |
Standard_Boolean | IsDone () const |
Returns True if all has been correctly done. . | |
Standard_EXPORT void | Solve (const math_Vector &B, math_Vector &X) const |
Given an input vector , this routine returns the solution of the set of linear equations A . X = B. Exception NotDone is raised if the decomposition was not done successfully. Exception DimensionError is raised if the range of B is not equal to the rowrange of A. . | |
const math_Matrix & | Inverse () const |
returns the inverse matrix of A. Only the inferior triangle is returned. Exception NotDone is raised if NotDone. | |
void | Invert (math_Matrix &Inv) const |
returns in Inv the inverse matrix of A. Only the inferior triangle is returned. Exception NotDone is raised if NotDone. | |
Standard_Real | Determinant () const |
Returns the value of the determinant of the previously LU decomposed matrix A. Zero is returned if the matrix A is considered as singular. Exceptions StdFail_NotDone if the algorithm fails (and IsDone returns false). . | |
Standard_EXPORT void | Dump (Standard_OStream &o) const |
Prints on the stream o information on the current state of the object. . | |
Private Attributes | |
math_Matrix | InvA |
Standard_Boolean | Done |
Standard_Real | Det |
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