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      1  1.4     matt /* $NetBSD: fpsetround.c,v 1.4 2013/01/10 08:16:10 matt Exp $ */
      2  1.1    bjh21 
      3  1.1    bjh21 /*-
      4  1.1    bjh21  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  1.1    bjh21  * All rights reserved.
      6  1.1    bjh21  *
      7  1.1    bjh21  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1    bjh21  * by Neil A. Carson and Mark Brinicombe
      9  1.1    bjh21  *
     10  1.1    bjh21  * Redistribution and use in source and binary forms, with or without
     11  1.1    bjh21  * modification, are permitted provided that the following conditions
     12  1.1    bjh21  * are met:
     13  1.1    bjh21  * 1. Redistributions of source code must retain the above copyright
     14  1.1    bjh21  *    notice, this list of conditions and the following disclaimer.
     15  1.1    bjh21  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1    bjh21  *    notice, this list of conditions and the following disclaimer in the
     17  1.1    bjh21  *    documentation and/or other materials provided with the distribution.
     18  1.1    bjh21  *
     19  1.1    bjh21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.1    bjh21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.1    bjh21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.1    bjh21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.1    bjh21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.1    bjh21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.1    bjh21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.1    bjh21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.1    bjh21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.1    bjh21  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.1    bjh21  * POSSIBILITY OF SUCH DAMAGE.
     30  1.1    bjh21  */
     31  1.1    bjh21 
     32  1.1    bjh21 #include <sys/cdefs.h>
     33  1.1    bjh21 #if defined(LIBC_SCCS) && !defined(lint)
     34  1.4     matt __RCSID("$NetBSD: fpsetround.c,v 1.4 2013/01/10 08:16:10 matt Exp $");
     35  1.1    bjh21 #endif /* LIBC_SCCS and not lint */
     36  1.1    bjh21 
     37  1.2  thorpej #include "namespace.h"
     38  1.2  thorpej 
     39  1.1    bjh21 #include <ieeefp.h>
     40  1.1    bjh21 #ifdef SOFTFLOAT_FOR_GCC
     41  1.1    bjh21 #include "softfloat-for-gcc.h"
     42  1.1    bjh21 #endif
     43  1.1    bjh21 #include "milieu.h"
     44  1.1    bjh21 #include "softfloat.h"
     45  1.2  thorpej 
     46  1.2  thorpej #ifdef __weak_alias
     47  1.2  thorpej __weak_alias(fpsetround,_fpsetround)
     48  1.2  thorpej #endif
     49  1.1    bjh21 
     50  1.1    bjh21 fp_rnd
     51  1.1    bjh21 fpsetround(fp_rnd rnd_dir)
     52  1.1    bjh21 {
     53  1.4     matt #ifdef set_float_rounding_mode
     54  1.4     matt 	return set_float_rounding_mode(rnd_dir);
     55  1.4     matt #else
     56  1.4     matt 	const fp_rnd old = float_rounding_mode;
     57  1.1    bjh21 	float_rounding_mode = rnd_dir;
     58  1.1    bjh21 	return old;
     59  1.4     matt #endif
     60  1.1    bjh21 }
     61