diff options
Diffstat (limited to 'lib/libc/quad/ashrdi3.c')
-rw-r--r-- | lib/libc/quad/ashrdi3.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/lib/libc/quad/ashrdi3.c b/lib/libc/quad/ashrdi3.c deleted file mode 100644 index 9ffa5ed..0000000 --- a/lib/libc/quad/ashrdi3.c +++ /dev/null @@ -1,75 +0,0 @@ -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This software was developed by the Computer Systems Engineering group - * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and - * contributed to Berkeley. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)ashrdi3.c 8.1 (Berkeley) 6/4/93"; -#endif /* LIBC_SCCS and not lint */ - -#include "quad.h" - -/* - * Shift a (signed) quad value right (arithmetic shift right). - */ -quad_t -__ashrdi3(a, shift) - quad_t a; - qshift_t shift; -{ - union uu aa; - - aa.q = a; - if (shift >= LONG_BITS) { - long s; - - /* - * Smear bits rightward using the machine's right-shift - * method, whether that is sign extension or zero fill, - * to get the `sign word' s. Note that shifting by - * LONG_BITS is undefined, so we shift (LONG_BITS-1), - * then 1 more, to get our answer. - */ - s = (aa.sl[H] >> (LONG_BITS - 1)) >> 1; - aa.ul[L] = shift >= QUAD_BITS ? s : - aa.sl[H] >> (shift - LONG_BITS); - aa.ul[H] = s; - } else if (shift > 0) { - aa.ul[L] = (aa.ul[L] >> shift) | - (aa.ul[H] << (LONG_BITS - shift)); - aa.sl[H] >>= shift; - } - return (aa.q); -} |