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      1 /*	$NetBSD: fenv.c,v 1.3 2019/10/26 17:57:20 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2015 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <sys/cdefs.h>
     32 __RCSID("$NetBSD: fenv.c,v 1.3 2019/10/26 17:57:20 christos Exp $");
     33 
     34 #include "namespace.h"
     35 
     36 #define	__fenv_static
     37 #include <fenv.h>
     38 
     39 #ifdef __weak_alias
     40 __weak_alias(feclearexcept,_feclearexcept)
     41 __weak_alias(fegetenv,_fegetenv)
     42 __weak_alias(fegetexceptflag,_fegetexceptflag)
     43 __weak_alias(fegetround,_fegetround)
     44 __weak_alias(feholdexcept,_feholdexcept)
     45 __weak_alias(feraiseexcept,_feraiseexcept)
     46 __weak_alias(fesetenv,_fesetenv)
     47 __weak_alias(fesetexceptflag,_fesetexceptflag)
     48 __weak_alias(fesetround,_fesetround)
     49 __weak_alias(fetestexcept,_fetestexcept)
     50 __weak_alias(feupdateenv,_feupdateenv)
     51 
     52 __weak_alias(fedisableexcept,_fedisableexcept)
     53 __weak_alias(feenableexcept,_feenableexcept)
     54 __weak_alias(fegetexcept,_fegetexcept)
     55 #endif
     56 
     57 #if defined(__GNUC_GNU_INLINE__) && !defined(__lint__)
     58 #error "This file must be compiled with C99 'inline' semantics"
     59 #endif
     60 
     61 extern inline int feclearexcept(int __excepts);
     62 extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
     63 extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
     64 extern inline int feraiseexcept(int __excepts);
     65 extern inline int fetestexcept(int __excepts);
     66 extern inline int fegetround(void);
     67 extern inline int fesetround(int __round);
     68 extern inline int fegetenv(fenv_t *__envp);
     69 extern inline int feholdexcept(fenv_t *__envp);
     70 extern inline int fesetenv(const fenv_t *__envp);
     71 extern inline int feupdateenv(const fenv_t *__envp);
     72 
     73 extern inline int feenableexcept(int __excepts);
     74 extern inline int fedisableexcept(int __excepts);
     75 extern inline int fegetexcept(void);
     76