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fenv.c revision 1.3 
      1 /*	$NetBSD: fenv.c,v 1.3 2017/03/22 23:11:08 chs Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004 David Schultz <das (at) FreeBSD.ORG>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  * $FreeBSD: head/lib/msun/mips/fenv.c 226415 2011-10-16 05:37:56Z das $
     29  */
     30 #include <sys/cdefs.h>
     31 __RCSID("$NetBSD: fenv.c,v 1.3 2017/03/22 23:11:08 chs Exp $");
     32 
     33 #include "namespace.h"
     34 
     35 #define	__fenv_static
     36 #include <fenv.h>
     37 
     38 #ifdef __weak_alias
     39 __weak_alias(feclearexcept,_feclearexcept)
     40 __weak_alias(fedisableexcept,_fedisableexcept)
     41 __weak_alias(feenableexcept,_feenableexcept)
     42 __weak_alias(fegetenv,_fegetenv)
     43 __weak_alias(fegetexcept,_fegetexcept)
     44 __weak_alias(fegetexceptflag,_fegetexceptflag)
     45 __weak_alias(fegetround,_fegetround)
     46 __weak_alias(feholdexcept,_feholdexcept)
     47 __weak_alias(feraiseexcept,_feraiseexcept)
     48 __weak_alias(fesetenv,_fesetenv)
     49 __weak_alias(fesetexceptflag,_fesetexceptflag)
     50 __weak_alias(fesetround,_fesetround)
     51 __weak_alias(fetestexcept,_fetestexcept)
     52 __weak_alias(feupdateenv,_feupdateenv)
     53 #endif
     54 
     55 #if defined(__GNUC_GNU_INLINE__) && !defined(__lint__)
     56 #error "This file must be compiled with C99 'inline' semantics"
     57 #endif
     58 
     59 /*
     60  * Hopefully the system ID byte is immutable, so it's valid to use
     61  * this as a default environment.
     62  */
     63 const fenv_t __fe_dfl_env = 0;
     64 
     65 extern inline int feclearexcept(int __excepts);
     66 extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
     67 extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
     68 extern inline int feraiseexcept(int __excepts);
     69 extern inline int fetestexcept(int __excepts);
     70 extern inline int fegetround(void);
     71 extern inline int fesetround(int __round);
     72 extern inline int fegetenv(fenv_t *__envp);
     73 extern inline int feholdexcept(fenv_t *__envp);
     74 extern inline int fesetenv(const fenv_t *__envp);
     75 extern inline int feupdateenv(const fenv_t *__envp);
     76 extern inline int feenableexcept(int __excepts);
     77 extern inline int fedisableexcept(int __excepts);
     78 extern inline int fegetexcept(void);
     79