📄 fileno.c
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/* Copyright (c) Colorado School of Mines, 2006.*//* All rights reserved. */#include "sfstdio.h"/* Return file number.** Written by Kiem-Phong Vo.*/#if __STD_Cint fileno(FILE* f)#elseint fileno(f)FILE* f;#endif{ reg Sfio_t* sf; if(!(sf = _sfstream(f))) return -1; return sffileno(sf);}#if _lib_fileno_unlocked && !_done_fileno_unlocked && !defined(fileno)#define _done_fileno_unlocked 1#define fileno fileno_unlocked#include "fileno.c"#undef fileno#endif
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