1.\" $OpenBSD: getc_unlocked.3,v 1.6 2015/09/14 13:45:25 schwarze Exp $ 2.\" David Leonard <d@openbsd.org>, 1999. Public domain. 3.Dd $Mdocdate: September 14 2015 $ 4.Dt GETC_UNLOCKED 3 5.Os 6.Sh NAME 7.Nm getc_unlocked , 8.Nm getchar_unlocked 9.Nd get next character from stream, efficiently 10.Sh SYNOPSIS 11.In stdio.h 12.Ft int 13.Fn getc_unlocked "FILE *stream" 14.Ft int 15.Fn getchar_unlocked void 16.Sh DESCRIPTION 17The 18.Fn getc_unlocked 19and 20.Fn getchar_unlocked 21functions are equivalent to their locked counterparts, 22.Xr getc 3 23and 24.Xr getchar 3 . 25However, 26.Fn getc_unlocked 27and 28.Fn getchar_unlocked 29assume that the relevant stream has either been previously locked 30with 31.Xr flockfile 3 , 32or that it will not be accessed by any other thread. 33.Sh RETURN VALUES 34The return values are as described for 35.Xr getc 3 36and 37.Xr getchar 3 . 38.Sh SEE ALSO 39.Xr getc 3 , 40.Xr getchar 3 41.Sh STANDARDS 42.Fn getc_unlocked 43and 44.Fn getchar_unlocked 45conform to ISO/IEC 9945-1 ANSI/IEEE 46.Pq Dq Tn POSIX 47Std 1003.1 Second Edition 1996-07-12. 48