_limits.h 3.6 KB

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  1. /*-
  2. * Copyright (c) 1988, 1993
  3. * The Regents of the University of California. 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. *
  14. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  15. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  18. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24. * SUCH DAMAGE.
  25. */
  26. #ifndef _MACHINE__LIMITS_H_
  27. #define _MACHINE__LIMITS_H_
  28. /*
  29. * According to ANSI (section 2.2.4.2), the values below must be usable by
  30. * #if preprocessing directives. Additionally, the expression must have the
  31. * same type as would an expression that is an object of the corresponding
  32. * type converted according to the integral promotions. The subtraction for
  33. * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
  34. * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
  35. */
  36. #define __CHAR_BIT 8 /* number of bits in a char */
  37. #define __SCHAR_MAX 0x7f /* max value for a signed char */
  38. #define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */
  39. #define __UCHAR_MAX 0xff /* max value for an unsigned char */
  40. #define __USHRT_MAX 0xffff /* max value for an unsigned short */
  41. #define __SHRT_MAX 0x7fff /* max value for a short */
  42. #define __SHRT_MIN (-0x7fff - 1) /* min value for a short */
  43. #define __UINT_MAX 0xffffffff /* max value for an unsigned int */
  44. #define __INT_MAX 0x7fffffff /* max value for an int */
  45. #define __INT_MIN (-0x7fffffff - 1) /* min value for an int */
  46. #define __ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */
  47. #define __LONG_MAX 0x7fffffffffffffffL /* max for a long */
  48. #define __LONG_MIN (-0x7fffffffffffffffL - 1) /* min for a long */
  49. /* Long longs have the same size but not the same type as longs. */
  50. /* max for an unsigned long long */
  51. #define __ULLONG_MAX 0xffffffffffffffffULL
  52. #define __LLONG_MAX 0x7fffffffffffffffLL /* max for a long long */
  53. #define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */
  54. #define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */
  55. #define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */
  56. #define __OFF_MAX __LONG_MAX /* max value for an off_t */
  57. #define __OFF_MIN __LONG_MIN /* min value for an off_t */
  58. /* Quads and longs are the same size. Ensure they stay in sync. */
  59. #define __UQUAD_MAX (__ULONG_MAX) /* max value for a uquad_t */
  60. #define __QUAD_MAX (__LONG_MAX) /* max value for a quad_t */
  61. #define __QUAD_MIN (__LONG_MIN) /* min value for a quad_t */
  62. #define __LONG_BIT 64
  63. #define __WORD_BIT 32
  64. /* Minimum signal stack size. */
  65. #define __MINSIGSTKSZ (1024 * 4)
  66. #endif /* !_MACHINE__LIMITS_H_ */