$ gcc -E -dM – < /dev/null
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #define __SSP_STRONG__ 3 #define __DBL_MIN_EXP__ (-1021) #define __UINT_LEAST16_MAX__ 0xffff #define __ATOMIC_ACQUIRE 2 #define __FLT_MIN__ 1.17549435082228750797e-38F #define __GCC_IEC_559_COMPLEX 2 #define __UINT_LEAST8_TYPE__ unsigned char #define __SIZEOF_FLOAT80__ 16 #define __INTMAX_C(c) c ## L #define __CHAR_BIT__ 8 #define __UINT8_MAX__ 0xff #define __WINT_MAX__ 0xffffffffU #define __ORDER_LITTLE_ENDIAN__ 1234 #define __SIZE_MAX__ 0xffffffffffffffffUL #define __WCHAR_MAX__ 0x7fffffff #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1 #define __DBL_DENORM_MIN__ ((double)4.94065645841246544177e-324L) #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 1 #define __GCC_ATOMIC_CHAR_LOCK_FREE 2 .... |