gsl_cdf__chisqinv.c 1.1 KB

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  1. /* cdf/chisqinv.c
  2. *
  3. * Copyright (C) 2003, 2007 Brian Gough
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation; either version 3 of the License, or (at
  8. * your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful, but
  11. * WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program; if not, write to the Free Software
  17. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  18. */
  19. #include "gsl__config.h"
  20. #include "gsl_cdf.h"
  21. #include "gsl_sf_gamma.h"
  22. double
  23. gsl_cdf_chisq_Pinv (const double P, const double nu)
  24. {
  25. return gsl_cdf_gamma_Pinv (P, nu / 2, 2.0);
  26. }
  27. double
  28. gsl_cdf_chisq_Qinv (const double Q, const double nu)
  29. {
  30. return gsl_cdf_gamma_Qinv (Q, nu / 2, 2.0);
  31. }