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分类: C/C++

2012-02-07 11:35:54

gcc -E -dm -
  1. root@test-desktop:~# gcc -E -dM - </dev/null
  2. #define __DBL_MIN_EXP__ (-1021)
  3. #define __FLT_MIN__ 1.17549435e-38F
  4. #define __CHAR_BIT__ 8
  5. #define __WCHAR_MAX__ 2147483647
  6. #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1
  7. #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1
  8. #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1
  9. #define __DBL_DENORM_MIN__ 4.9406564584124654e-324
  10. #define __FLT_EVAL_METHOD__ 2
  11. #define __unix__ 1
  12. #define __DBL_MIN_10_EXP__ (-307)
  13. #define __FINITE_MATH_ONLY__ 0
  14. #define __GNUC_PATCHLEVEL__ 3
  15. #define __DEC64_MAX_EXP__ 385
  16. #define __SHRT_MAX__ 32767
  17. #define __LDBL_MAX__ 1.18973149535723176502e+4932L
  18. #define __UINTMAX_TYPE__ long long unsigned int
  19. #define __linux 1
  20. #define __DEC32_EPSILON__ 1E-6DF
  21. #define __unix 1
  22. #define __LDBL_MAX_EXP__ 16384
  23. #define __linux__ 1
  24. #define __SCHAR_MAX__ 127
  25. #define __DBL_DIG__ 15
  26. #define _FORTIFY_SOURCE 2
  27. #define __SIZEOF_INT__ 4
  28. #define __SIZEOF_POINTER__ 4
  29. #define __USER_LABEL_PREFIX__
  30. #define __STDC_HOSTED__ 1
  31. #define __LDBL_HAS_INFINITY__ 1
  32. #define __FLT_EPSILON__ 1.19209290e-7F
  33. #define __LDBL_MIN__ 3.36210314311209350626e-4932L
  34. #define __DEC32_MAX__ 9.999999E96DF
  35. #define __SIZEOF_LONG__ 4
  36. #define __DECIMAL_DIG__ 21
  37. #define __gnu_linux__ 1
  38. #define __LDBL_HAS_QUIET_NAN__ 1
  39. #define __GNUC__ 4
  40. #define __FLT_HAS_DENORM__ 1
  41. #define __SIZEOF_LONG_DOUBLE__ 12
  42. #define __BIGGEST_ALIGNMENT__ 16
  43. #define __DBL_MAX__ 1.7976931348623157e+308
  44. #define __DBL_HAS_INFINITY__ 1
  45. #define __DEC32_MIN_EXP__ (-94)
  46. #define __LDBL_HAS_DENORM__ 1
  47. #define __DEC128_MAX__ 9.999999999999999999999999999999999E6144DL
  48. #define __DEC32_MIN__ 1E-95DF
  49. #define __DBL_MAX_EXP__ 1024
  50. #define __DEC128_EPSILON__ 1E-33DL
  51. #define __LONG_LONG_MAX__ 9223372036854775807LL
  52. #define __SIZEOF_SIZE_T__ 4
  53. #define __SIZEOF_WINT_T__ 4
  54. #define __GXX_ABI_VERSION 1002
  55. #define __FLT_MIN_EXP__ (-125)
  56. #define __DBL_MIN__ 2.2250738585072014e-308
  57. #define __DECIMAL_BID_FORMAT__ 1
  58. #define __DEC128_MIN__ 1E-6143DL
  59. #define __REGISTER_PREFIX__
  60. #define __DBL_HAS_DENORM__ 1
  61. #define __NO_INLINE__ 1
  62. #define __i386 1
  63. #define __FLT_MANT_DIG__ 24
  64. #define __VERSION__ "4.4.3"
  65. #define __DEC64_EPSILON__ 1E-15DD
  66. #define __DEC128_MIN_EXP__ (-6142)
  67. #define __i486__ 1
  68. #define unix 1
  69. #define __i386__ 1
  70. #define __SIZE_TYPE__ unsigned int
  71. #define __ELF__ 1
  72. #define __FLT_RADIX__ 2
  73. #define __LDBL_EPSILON__ 1.08420217248550443401e-19L
  74. #define __SIZEOF_PTRDIFF_T__ 4
  75. #define __DEC32_SUBNORMAL_MIN__ 0.000001E-95DF
  76. #define __FLT_HAS_QUIET_NAN__ 1
  77. #define __FLT_MAX_10_EXP__ 38
  78. #define __LONG_MAX__ 2147483647L
  79. #define __DEC128_SUBNORMAL_MIN__ 0.000000000000000000000000000000001E-6143DL
  80. #define __FLT_HAS_INFINITY__ 1
  81. #define __DEC64_MAX__ 9.999999999999999E384DD
  82. #define __CHAR16_TYPE__ short unsigned int
  83. #define __DEC64_MANT_DIG__ 16
  84. #define __DEC32_MAX_EXP__ 97
  85. #define linux 1
  86. #define __LDBL_MANT_DIG__ 64
  87. #define __DBL_HAS_QUIET_NAN__ 1
  88. #define __WCHAR_TYPE__ int
  89. #define __SIZEOF_FLOAT__ 4
  90. #define __DEC64_MIN_EXP__ (-382)
  91. #define __FLT_DIG__ 6
  92. #define __INT_MAX__ 2147483647
  93. #define __i486 1
  94. #define __FLT_MAX_EXP__ 128
  95. #define __DBL_MANT_DIG__ 53
  96. #define __DEC64_MIN__ 1E-383DD
  97. #define __WINT_TYPE__ unsigned int
  98. #define __SIZEOF_SHORT__ 2
  99. #define __LDBL_MIN_EXP__ (-16381)
  100. #define __SSP__ 1
  101. #define __LDBL_MAX_10_EXP__ 4932
  102. #define __DBL_EPSILON__ 2.2204460492503131e-16
  103. #define __SIZEOF_WCHAR_T__ 4
  104. #define __DEC_EVAL_METHOD__ 2
  105. #define __INTMAX_MAX__ 9223372036854775807LL
  106. #define __FLT_DENORM_MIN__ 1.40129846e-45F
  107. #define __CHAR32_TYPE__ unsigned int
  108. #define __FLT_MAX__ 3.40282347e+38F
  109. #define __SIZEOF_DOUBLE__ 8
  110. #define __FLT_MIN_10_EXP__ (-37)
  111. #define __INTMAX_TYPE__ long long int
  112. #define i386 1
  113. #define __DEC128_MAX_EXP__ 6145
  114. #define __GNUC_MINOR__ 4
  115. #define __DEC32_MANT_DIG__ 7
  116. #define __DBL_MAX_10_EXP__ 308
  117. #define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
  118. #define __STDC__ 1
  119. #define __PTRDIFF_TYPE__ int
  120. #define __DEC64_SUBNORMAL_MIN__ 0.000000000000001E-383DD
  121. #define __DEC128_MANT_DIG__ 34
  122. #define __LDBL_MIN_10_EXP__ (-4931)
  123. #define __SIZEOF_LONG_LONG__ 8
  124. #define __LDBL_DIG__ 18
  125. #define __GNUC_GNU_INLINE__ 1

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