http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/bits/fenv.h

/* Copyright (C) 1997,1998,1999,2000,2001,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif #include <bits/wordsize.h> /* Define bits representing the exception. We use the bit positions of the appropriate bits in the FPU control word. */ enum { FE_INVALID = 0x01, #define FE_INVALID FE_INVALID __FE_DENORM = 0x02, FE_DIVBYZERO = 0x04, #define FE_DIVBYZERO FE_DIVBYZERO FE_OVERFLOW = 0x08, #define FE_OVERFLOW FE_OVERFLOW FE_UNDERFLOW = 0x10, #define FE_UNDERFLOW FE_UNDERFLOW FE_INEXACT = 0x20 #define FE_INEXACT FE_INEXACT }; #define FE_ALL_EXCEPT \ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) /* The ix87 FPU supports all of the four defined rounding modes. We use again the bit positions in the FPU control word as the values for the appropriate macros. */ enum { FE_TONEAREST = 0, #define FE_TONEAREST FE_TONEAREST FE_DOWNWARD = 0x400, #define FE_DOWNWARD FE_DOWNWARD FE_UPWARD = 0x800, #define FE_UPWARD FE_UPWARD FE_TOWARDZERO = 0xc00 #define FE_TOWARDZERO FE_TOWARDZERO }; /* Type representing exception flags. */ typedef unsigned short int fexcept_t; /* Type representing floating-point environment. This structure corresponds to the layout of the block written by the `fstenv' instruction and has additional fields for the contents of the MXCSR register as written by the `stmxcsr' instruction. */ typedef struct { unsigned short int __control_word; unsigned short int __unused1; unsigned short int __status_word; unsigned short int __unused2; unsigned short int __tags; unsigned short int __unused3; unsigned int __eip; unsigned short int __cs_selector; unsigned int __opcode:11; unsigned int __unused4:5; unsigned int __data_offset; unsigned short int __data_selector; unsigned short int __unused5; #if __WORDSIZE == 64 unsigned int __mxcsr; #endif } fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((__const fenv_t *) -1) #ifdef __USE_GNU /* Floating-point environment where none of the exception is masked. */ # define FE_NOMASK_ENV ((__const fenv_t *) -2) #endif