acos acosh adaptsimp asin asinh atan atan2 atanh betafn BFGS cbind cbrt ceil chol_solve chol_solve cholesky copy copy_recycle copysign cos cosh crossprod dbeta dbinom dchisq det dexp df dgamma diag dlnorm dlogis dnbinom dnorm dpois dt dt1 dunif dweibull eigen epsilon erf erfc exp expm1 eye fabs factorial floor fmod for_each_ij_set gammafn gaxpy gradfdif gradfdifls hesscdif hypot intsimp inv inv invpd invpd j0 j1 jacfdif jn kronecker kurtosis kurtosisc ldexp lgamma linesearch1 linesearch2 lnbetafn lndbeta1 lndmvn lndnorm lndt1 lnfactorial lngammafn log log10 log1p logb lu_decomp lu_solve lu_solve matrix_order matrix_style max maxc maxind maxindc mean meanc median medianc min minc minind minindc mode modec nls_broyden ones operator! operator!= operator% operator& operator* operator* operator+ operator- operator- operator/ operator< operator<< operator<= operator== operator> operator>= operator>> operator^ operator| order pbeta pbinom pchisq pexp pf pgamma plnorm plogis pnbinom pnorm pow ppois prod prodc pt punif pweibull qnorm1 qr_decomp qr_solve qr_solve rbind rint row_interchange sd sd sdc selif seqa sgn sin sinh skew skewc sort sortc sqrt sum sumc svd t tan tanh unique var var varc vech xpnd y0 y1 yn zoom

template<matrix_order RO, matrix_style RS, typename T , matrix_order PO1, matrix_style PS1, matrix_order PO2, matrix_style PS2, matrix_order PO3, matrix_style PS3, matrix_order PO4, matrix_style PS4> Matrix<T,RO,RS> scythe::inv ( const Matrix< T, PO1, PS1 > &  A, const Matrix< T, PO2, PS2 > &  L, const Matrix< T, PO3, PS3 > &  U, const Matrix< unsigned int, PO4, PS4 > &  perm_vec  ) Calculates the inverse of a non-singular square matrix, given an LU decomposition. This function returns the inverse of an arbitrary, non-singular, square matrix A when passed a permutation of an LU decomposition, such as that returned by lu_decomp(). A one-parameter version of this function exists that does not require the user to pre-decompose the system. Parameters: A The Matrix to be inverted. L A Lower triangular matrix resulting from decomposition. U An Upper triangular matrix resulting from decomposition. perm_vec The permutation vector recording the row-wise permutation of A actually decomposed by the algorithm. See also: inv (const Matrix<T, PO, PS>&) invpd(const Matrix<T, PO, PS>&) invpd(const Matrix<T, PO1, PS1>&, const Matrix<T, PO2, PS2>&) lu_decomp(Matrix<T,PO1,PS1>, Matrix<T,PO2,Concrete>&, Matrix<T,PO3,Concrete>&, Matrix<unsigned int, PO4, Concrete>&) Exceptions: scythe_null_error(Level 1) scythe_dimension_error (Level 1) scythe_conformation_error (Level 1) References scythe::Matrix_base< ORDER, STYLE >::cols(), scythe::Matrix_base< ORDER, STYLE >::isNull(), scythe::Matrix_base< ORDER, STYLE >::isScalar(), scythe::Matrix_base< ORDER, STYLE >::isSquare(), row_interchange(), scythe::Matrix_base< ORDER, STYLE >::rows(), and SCYTHE_CHECK_10. Referenced by BFGS(), and scythe::rtmvnorm< RNGTYPE >::rtmvnorm().