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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [lambda-trans.c] - Blame information for rev 280

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1 280 jeremybenn
/* Lambda matrix transformations.
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   Copyright (C) 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
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   Contributed by Daniel Berlin <dberlin@dberlin.org>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "ggc.h"
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#include "tree.h"
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#include "target.h"
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#include "tree-flow.h"
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#include "lambda.h"
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/* Allocate a new transformation matrix.  */
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lambda_trans_matrix
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lambda_trans_matrix_new (int colsize, int rowsize)
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{
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  lambda_trans_matrix ret;
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  ret = GGC_NEW (struct lambda_trans_matrix_s);
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  LTM_MATRIX (ret) = lambda_matrix_new (rowsize, colsize);
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  LTM_ROWSIZE (ret) = rowsize;
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  LTM_COLSIZE (ret) = colsize;
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  LTM_DENOMINATOR (ret) = 1;
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  return ret;
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}
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/* Return true if MAT is an identity matrix.  */
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bool
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lambda_trans_matrix_id_p (lambda_trans_matrix mat)
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{
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  if (LTM_ROWSIZE (mat) != LTM_COLSIZE (mat))
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    return false;
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  return lambda_matrix_id_p (LTM_MATRIX (mat), LTM_ROWSIZE (mat));
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}
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/* Compute the inverse of the transformation matrix MAT.  */
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lambda_trans_matrix
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lambda_trans_matrix_inverse (lambda_trans_matrix mat)
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{
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  lambda_trans_matrix inverse;
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  int determinant;
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  inverse = lambda_trans_matrix_new (LTM_ROWSIZE (mat), LTM_COLSIZE (mat));
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  determinant = lambda_matrix_inverse (LTM_MATRIX (mat), LTM_MATRIX (inverse),
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                                       LTM_ROWSIZE (mat));
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  LTM_DENOMINATOR (inverse) = determinant;
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  return inverse;
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}
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/* Print out a transformation matrix.  */
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void
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print_lambda_trans_matrix (FILE *outfile, lambda_trans_matrix mat)
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{
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  print_lambda_matrix (outfile, LTM_MATRIX (mat), LTM_ROWSIZE (mat),
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                       LTM_COLSIZE (mat));
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}

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