chromium / native_client / nacl-gcc / f80d6b9ee7f94755c697ffb7194fb01dd0c537dd / . / gcc / lambda-trans.c

/* 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)); | |

} |