1: /* 2: * Copyright (c) 1980 Regents of the University of California. 3: * All rights reserved. The Berkeley software License Agreement 4: * specifies the terms and conditions for redistribution. 5: * 6: * @(#)r_acos.c 5.2 7/8/85 7: */ 8: 9: float r_acos(x) 10: float *x; 11: { 12: double acos(); 13: return( acos(*x) ); 14: }