1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * %sccs.include.redist.c% 10 */ 11 12 #if defined(LIBC_SCCS) && !defined(lint) 13 static char sccsid[] = "@(#)lshrdi3.c 8.1 (Berkeley) 06/04/93"; 14 #endif /* LIBC_SCCS and not lint */ 15 16 #include "quad.h" 17 18 /* 19 * Shift an (unsigned) quad value right (logical shift right). 20 */ 21 quad_t 22 __lshrdi3(a, shift) 23 quad_t a; 24 qshift_t shift; 25 { 26 union uu aa; 27 28 aa.q = a; 29 if (shift >= LONG_BITS) { 30 aa.ul[L] = shift >= QUAD_BITS ? 0 : 31 aa.ul[H] >> (shift - LONG_BITS); 32 aa.ul[H] = 0; 33 } else if (shift > 0) { 34 aa.ul[L] = (aa.ul[L] >> shift) | 35 (aa.ul[H] << (LONG_BITS - shift)); 36 aa.ul[H] >>= shift; 37 } 38 return (aa.q); 39 } 40