Plan 9 from Bell Labs’s /n/sources/plan9/sys/include/ape/sys/param.h
#ifndef __PARAM_H__ #define __PARAM_H__ #ifndef _BSD_EXTENSION This header file is an extension to ANSI/POSIX #endif #ifdef __cplusplus extern "C" { #endif #define NOFILES_MAX 100 #ifdef __cplusplus } #endif #endif /* !__PARAM_H__ */