/*- * Copyright (c) 1980 The Regents of the University of California. * All rights reserved. * * %sccs.include.proprietary.c% */ #ifndef lint static char sccsid[] = "@(#)r_atan.c 5.3 (Berkeley) 04/12/91"; #endif /* not lint */ float r_atan(x) float *x; { double atan(); return( atan(*x) ); }