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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc4/] [gcc/] [lambda-trans.c] - Rev 593
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/* Lambda matrix transformations. Copyright (C) 2003, 2004, 2007, 2008 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 3, 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 COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config.h" #include "system.h" #include "coretypes.h" #include "tm.h" #include "ggc.h" #include "tree.h" #include "target.h" #include "tree-flow.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_NEW (struct lambda_trans_matrix_s); 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)); }
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