/* * Copyright (c) 2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /******************************************************************************* * * * File: fenv_private.h * * * * Contains: Defines for manipulating environmental settings directly. * * * *******************************************************************************/ #ifndef __FENV_PRIVATE__ #define __FENV_PRIVATE__ /* Pick up the publicly visible enums formerly sited here */ #include <fenv.h> /* Macros to get or set environment flags doubleword */ #define FEGETENVD(x) asm volatile ("mffs %0" : "=f" (x)); #define FESETENVD(x) asm volatile ("mtfsf 255,%0" : : "f" (x)); /* exception flags */ #define FE_SET_FX 0x80000000 /* floating-point exception summary (FX) bit */ #define FE_CLR_FX 0x7fffffff #define SET_INVALID 0x01000000 /* the bitwise negation (one's complement) of FE_ALL_EXCEPT */ #define FE_NO_EXCEPT 0xc1ffffff /* the bitwise OR of all of the separate exception bits in the FPSCR */ #define FE_ALL_FLAGS 0xfff80300 /* the bitwise negation (one's complement) of the previous macro */ #define FE_NO_FLAGS 0x0007fcff /* the bitwise OR of all of the separate invalid stickies in the FPSCR */ #define FE_ALL_INVALID 0x01f80300 /* the bitwise negation (one's complement) of the previous macro */ #define FE_NO_INVALID 0xfe07fcff /* an AND mask to disable all floating-point exception enables in the FPSCR */ #define FE_NO_ENABLES 0xffffff07 /* rounding direction mode bits */ #define FE_ALL_RND 0x00000003 #define FE_NO_RND 0xfffffffc #define EXCEPT_MASK 0x1ff80000 #endif /* __FENV_PRIVATE__ */