root/usr/src/lib/libc/sparc/gen/lsign.S
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
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/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */

        .file   "lsign.s"

/*
 * Determine the sign of a double-long number.
 * Ported from m32 version to sparc.
 *
 *      int
 *      lsign (op)
 *              dl_t    op;
 */

#include "SYS.h"

        ENTRY(lsign)

        ld      [%o0],%o0               ! fetch op (high word only)
        jmp     %o7+8                   ! return
        srl     %o0,31,%o0              ! shift letf logical to isolate sign

        SET_SIZE(lsign)