GaussianElimination.h File Reference

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Functions
template<class MatrixA , class MatrixB >
JPH_NAMESPACE_BEGIN bool	GaussianElimination (MatrixA &ioA, MatrixB &ioB, float inTolerance=1.0e-16f)

Function Documentation

GaussianElimination()

template<class MatrixA , class MatrixB >

JPH_NAMESPACE_BEGIN bool GaussianElimination	(	MatrixA &	ioA,
		MatrixB &	ioB,
		float	inTolerance = 1.0e-16f
	)

This function performs Gauss-Jordan elimination to solve a matrix equation. A must be an NxN matrix and B must be an NxM matrix forming the equation A * x = B on output B will contain x and A will be destroyed.

This code can be used for example to compute the inverse of a matrix. Set A to the matrix to invert, set B to identity and let GaussianElimination solve the equation, on return B will be the inverse of A. And A is destroyed.

Taken and adapted from Numerical Recipies in C paragraph 2.1