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The C and C++ Include Header Files

cat -n /usr/include/x86_64-linux-gnu/asm/auxvec.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _ASM_X86_AUXVEC_H
     3	#define _ASM_X86_AUXVEC_H
     4	/*
     5	 * Architecture-neutral AT_ values in 0-17, leave some room
     6	 * for more of them, start the x86-specific ones at 32.
     7	 */
     8	#ifdef __i386__
     9	#define AT_SYSINFO		32
    10	#endif
    11	#define AT_SYSINFO_EHDR		33
    12	
    13	/* entries in ARCH_DLINFO: */
    14	# define AT_VECTOR_SIZE_ARCH 2
    15	
    16	#endif /* _ASM_X86_AUXVEC_H */