/*- * Copyright (c) 1980 The Regents of the University of California. * All rights reserved. * * This module is believed to contain source code proprietary to AT&T. * Use and redistribution is subject to the Berkeley Software License * Agreement and your Software Agreement with AT&T (Western Electric). */ #ifndef lint static char sccsid[] = "@(#)r_atan.c 5.3 (Berkeley) 4/12/91"; #endif /* not lint */ float r_atan(x) float *x; { double atan(); return( atan(*x) ); }