prdtoa.h 3.2 KB

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  1. /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  2. /* ***** BEGIN LICENSE BLOCK *****
  3. * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  4. *
  5. * The contents of this file are subject to the Mozilla Public License Version
  6. * 1.1 (the "License"); you may not use this file except in compliance with
  7. * the License. You may obtain a copy of the License at
  8. * http://www.mozilla.org/MPL/
  9. *
  10. * Software distributed under the License is distributed on an "AS IS" basis,
  11. * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12. * for the specific language governing rights and limitations under the
  13. * License.
  14. *
  15. * The Original Code is the Netscape Portable Runtime (NSPR).
  16. *
  17. * The Initial Developer of the Original Code is
  18. * Netscape Communications Corporation.
  19. * Portions created by the Initial Developer are Copyright (C) 1998-2000
  20. * the Initial Developer. All Rights Reserved.
  21. *
  22. * Contributor(s):
  23. *
  24. * Alternatively, the contents of this file may be used under the terms of
  25. * either the GNU General Public License Version 2 or later (the "GPL"), or
  26. * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27. * in which case the provisions of the GPL or the LGPL are applicable instead
  28. * of those above. If you wish to allow use of your version of this file only
  29. * under the terms of either the GPL or the LGPL, and not to allow others to
  30. * use your version of this file under the terms of the MPL, indicate your
  31. * decision by deleting the provisions above and replace them with the notice
  32. * and other provisions required by the GPL or the LGPL. If you do not delete
  33. * the provisions above, a recipient may use your version of this file under
  34. * the terms of any one of the MPL, the GPL or the LGPL.
  35. *
  36. * ***** END LICENSE BLOCK ***** */
  37. #ifndef prdtoa_h___
  38. #define prdtoa_h___
  39. #include "prtypes.h"
  40. PR_BEGIN_EXTERN_C
  41. /*
  42. ** PR_strtod() returns as a double-precision floating-point number
  43. ** the value represented by the character string pointed to by
  44. ** s00. The string is scanned up to the first unrecognized
  45. ** character.
  46. **a
  47. ** If the value of se is not (char **)NULL, a pointer to
  48. ** the character terminating the scan is returned in the location pointed
  49. ** to by se. If no number can be formed, se is set to s00, and
  50. ** zero is returned.
  51. */
  52. #if defined(HAVE_WATCOM_BUG_1)
  53. /* this is a hack to circumvent a bug in the Watcom C/C++ 11.0 compiler
  54. ** When Watcom fixes the bug, remove the special case for Win16
  55. */
  56. PRFloat64 __pascal __loadds __export
  57. #else
  58. NSPR_API(PRFloat64)
  59. #endif
  60. PR_strtod(const char *s00, char **se);
  61. /*
  62. ** PR_cnvtf()
  63. ** conversion routines for floating point
  64. ** prcsn - number of digits of precision to generate floating
  65. ** point value.
  66. */
  67. NSPR_API(void) PR_cnvtf(char *buf, PRIntn bufsz, PRIntn prcsn, PRFloat64 fval);
  68. /*
  69. ** PR_dtoa() converts double to a string.
  70. **
  71. ** ARGUMENTS:
  72. ** If rve is not null, *rve is set to point to the end of the return value.
  73. ** If d is +-Infinity or NaN, then *decpt is set to 9999.
  74. **
  75. ** mode:
  76. ** 0 ==> shortest string that yields d when read in
  77. ** and rounded to nearest.
  78. */
  79. NSPR_API(PRStatus) PR_dtoa(PRFloat64 d, PRIntn mode, PRIntn ndigits,
  80. PRIntn *decpt, PRIntn *sign, char **rve, char *buf, PRSize bufsize);
  81. PR_END_EXTERN_C
  82. #endif /* prdtoa_h___ */