float.h 3.5 KB

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  1. /*-
  2. * Copyright (c) 1989 Regents of the University of California.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. * 1. Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * 2. Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in the
  12. * documentation and/or other materials provided with the distribution.
  13. * 3. Neither the name of the University nor the names of its contributors
  14. * may be used to endorse or promote products derived from this software
  15. * without specific prior written permission.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27. * SUCH DAMAGE.
  28. */
  29. #ifndef _MACHINE_FLOAT_H_
  30. #define _MACHINE_FLOAT_H_
  31. #include <sys/cdefs.h>
  32. __BEGIN_DECLS
  33. extern int __flt_rounds(void);
  34. __END_DECLS
  35. #define FLT_RADIX 2 /* b */
  36. #define FLT_ROUNDS __flt_rounds()
  37. #if __ISO_C_VISIBLE >= 1999
  38. #define FLT_EVAL_METHOD 0
  39. #define DECIMAL_DIG 17 /* max precision in decimal digits */
  40. #endif
  41. #define FLT_MANT_DIG 24 /* p */
  42. #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */
  43. #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
  44. #define FLT_MIN_EXP (-125) /* emin */
  45. #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
  46. #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
  47. #define FLT_MAX_EXP 128 /* emax */
  48. #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
  49. #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
  50. #if __ISO_C_VISIBLE >= 2011
  51. #define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */
  52. #define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */
  53. #define FLT_HAS_SUBNORM 1
  54. #endif /* __ISO_C_VISIBLE >= 2011 */
  55. #define DBL_MANT_DIG 53
  56. #define DBL_EPSILON 2.2204460492503131E-16
  57. #define DBL_DIG 15
  58. #define DBL_MIN_EXP (-1021)
  59. #define DBL_MIN 2.2250738585072014E-308
  60. #define DBL_MIN_10_EXP (-307)
  61. #define DBL_MAX_EXP 1024
  62. #define DBL_MAX 1.7976931348623157E+308
  63. #define DBL_MAX_10_EXP 308
  64. #if __ISO_C_VISIBLE >= 2011
  65. #define DBL_TRUE_MIN 4.9406564584124654E-324
  66. #define DBL_DECIMAL_DIG 17
  67. #define DBL_HAS_SUBNORM 1
  68. #endif /* __ISO_C_VISIBLE >= 2011 */
  69. #define LDBL_MANT_DIG 113
  70. #define LDBL_EPSILON 1.925929944387235853055977942584927319E-34L
  71. #define LDBL_DIG 33
  72. #define LDBL_MIN_EXP (-16381)
  73. #define LDBL_MIN 3.362103143112093506262677817321752603E-4932L
  74. #define LDBL_MIN_10_EXP (-4931)
  75. #define LDBL_MAX_EXP (+16384)
  76. #define LDBL_MAX 1.189731495357231765085759326628007016E+4932L
  77. #define LDBL_MAX_10_EXP (+4932)
  78. #if __ISO_C_VISIBLE >= 2011
  79. #define LDBL_TRUE_MIN 6.475175119438025110924438958227646552E-4966L
  80. #define LDBL_DECIMAL_DIG 36
  81. #define LDBL_HAS_SUBNORM 1
  82. #endif /* __ISO_C_VISIBLE >= 2011 */
  83. #endif /* _MACHINE_FLOAT_H_ */