diff options
Diffstat (limited to 'numlib/ludecomp.h')
-rwxr-xr-x[-rw-r--r--] | numlib/ludecomp.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/numlib/ludecomp.h b/numlib/ludecomp.h index cdb4382..1075a5b 100644..100755 --- a/numlib/ludecomp.h +++ b/numlib/ludecomp.h @@ -69,6 +69,8 @@ int *pivx /* Pivoting row permutations record */ ); /* Invert a matrix A using lu decomposition */ +/* NOTE that it returns transposed inverse by normal convention. */ +/* Use sym_matrix_trans() to fix this, or use matrix_trans_mult() */ /* Return 1 if the matrix is singular, 0 if OK */ int lu_invert( @@ -76,7 +78,19 @@ double **a, /* A[][] input matrix, returns inversion of A */ int n /* Dimensionality */ ); +/* Invert a matrix A using lu decomposition, and polish it. */ +/* NOTE that it returns transposed inverse by normal convention. */ +/* Use sym_matrix_trans() to fix this, or use matrix_trans_mult() */ +/* Return 1 if the matrix is singular, 0 if OK */ +int +lu_polished_invert( +double **a, /* A[][] input matrix, returns inversion of A */ +int n /* Dimensionality */ +); + /* Pseudo-Invert matrix A using lu decomposition */ +/* NOTE that it returns transposed inverse by normal convention. */ +/* Use matrix_trans() to fix this, or use matrix_trans_mult(). */ /* Return 1 if the matrix is singular, 0 if OK */ int lu_psinvert( |