modernc.org/cc@v1.0.1/v2/headers/linux_amd64/usr/include/bits/wordsize.h (about)

     1  /* Determine the wordsize from the preprocessor defines.  */
     2  
     3  #if defined __x86_64__ && !defined __ILP32__
     4  # define __WORDSIZE	64
     5  #else
     6  # define __WORDSIZE	32
     7  #endif
     8  
     9  #ifdef __x86_64__
    10  # define __WORDSIZE_TIME64_COMPAT32	1
    11  /* Both x86-64 and x32 use the 64-bit system call interface.  */
    12  # define __SYSCALL_WORDSIZE		64
    13  #endif