gsl_precision.h 1.7 KB

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  1. /* gsl_precision.h
  2. *
  3. * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18. */
  19. /* Author: B. Gough and G. Jungman */
  20. #ifndef __GSL_PRECISION_H__
  21. #define __GSL_PRECISION_H__
  22. #include "gsl_types.h"
  23. #undef __BEGIN_DECLS
  24. #undef __END_DECLS
  25. #ifdef __cplusplus
  26. # define __BEGIN_DECLS extern "C" {
  27. # define __END_DECLS }
  28. #else
  29. # define __BEGIN_DECLS /* empty */
  30. # define __END_DECLS /* empty */
  31. #endif
  32. __BEGIN_DECLS
  33. /* A type for the precision indicator.
  34. * This is mainly for pedagogy.
  35. */
  36. typedef unsigned int gsl_prec_t;
  37. /* The number of precision types.
  38. * Remember that precision-mode
  39. * can index an array.
  40. */
  41. #define _GSL_PREC_T_NUM 3
  42. /* Arrays containing derived
  43. * precision constants for the
  44. * different precision levels.
  45. */
  46. GSL_VAR const double gsl_prec_eps[];
  47. GSL_VAR const double gsl_prec_sqrt_eps[];
  48. GSL_VAR const double gsl_prec_root3_eps[];
  49. GSL_VAR const double gsl_prec_root4_eps[];
  50. GSL_VAR const double gsl_prec_root5_eps[];
  51. GSL_VAR const double gsl_prec_root6_eps[];
  52. __END_DECLS
  53. #endif /* __GSL_PRECISION_H__ */