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+/* Lambda matrix transformations.
+ Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Contributed by Daniel Berlin <dberlin@dberlin.org>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "ggc.h"
+#include "tree.h"
+#include "target.h"
+#include "lambda.h"
+
+/* Allocate a new transformation matrix. */
+
+lambda_trans_matrix
+lambda_trans_matrix_new (int colsize, int rowsize)
+{
+ lambda_trans_matrix ret;
+
+ ret = ggc_alloc (sizeof (*ret));
+ LTM_MATRIX (ret) = lambda_matrix_new (rowsize, colsize);
+ LTM_ROWSIZE (ret) = rowsize;
+ LTM_COLSIZE (ret) = colsize;
+ LTM_DENOMINATOR (ret) = 1;
+ return ret;
+}
+
+/* Return true if MAT is an identity matrix. */
+
+bool
+lambda_trans_matrix_id_p (lambda_trans_matrix mat)
+{
+ if (LTM_ROWSIZE (mat) != LTM_COLSIZE (mat))
+ return false;
+ return lambda_matrix_id_p (LTM_MATRIX (mat), LTM_ROWSIZE (mat));
+}
+
+
+/* Compute the inverse of the transformation matrix MAT. */
+
+lambda_trans_matrix
+lambda_trans_matrix_inverse (lambda_trans_matrix mat)
+{
+ lambda_trans_matrix inverse;
+ int determinant;
+
+ inverse = lambda_trans_matrix_new (LTM_ROWSIZE (mat), LTM_COLSIZE (mat));
+ determinant = lambda_matrix_inverse (LTM_MATRIX (mat), LTM_MATRIX (inverse),
+ LTM_ROWSIZE (mat));
+ LTM_DENOMINATOR (inverse) = determinant;
+ return inverse;
+}
+
+
+/* Print out a transformation matrix. */
+
+void
+print_lambda_trans_matrix (FILE *outfile, lambda_trans_matrix mat)
+{
+ print_lambda_matrix (outfile, LTM_MATRIX (mat), LTM_ROWSIZE (mat),
+ LTM_COLSIZE (mat));
+}