summaryrefslogtreecommitdiff
path: root/numlib/ludecomp.h
diff options
context:
space:
mode:
Diffstat (limited to 'numlib/ludecomp.h')
-rwxr-xr-x[-rw-r--r--]numlib/ludecomp.h14
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(