text: /*  $NetBSD: fenv.h,v 1.2 2014/01/29 00:22:09 matt Exp $    */
  /** @file
  *
  *  Copyright (c) 2013 - 2014, ARM Limited. All rights reserved.
  *
  *  This program and the accompanying materials
  *  are licensed and made available under the terms and conditions of the BSD License
  *  which accompanies this distribution.  The full text of the license may be found at
  *  http://opensource.org/licenses/bsd-license.php
  *
  *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  *
  **/
   /*
   * Based on ieeefp.h written by J.T. Conklin, Apr 28, 1995
   * Public domain.
   */
  
  #ifndef _ARM_FENV_H_
  #define _ARM_FENV_H_
  
  #ifdef __ARM_PCS_AAPCS64
  /* AArch64 split FPSCR into two registers FPCR and FPSR */
  typedef struct {
      unsigned int __fpcr;
      unsigned int __fpsr;
  } fenv_t;
  #else
  typedef int fenv_t;     /* FPSCR */
  #endif
  typedef int fexcept_t;
  
  #define FE_INVALID      0x01    /* invalid operation exception */
  #define FE_DIVBYZERO    0x02    /* divide-by-zero exception */
  #define FE_OVERFLOW     0x04    /* overflow exception */
  #define FE_UNDERFLOW    0x08    /* underflow exception */
  #define FE_INEXACT      0x10    /* imprecise (loss of precision; "inexact") */
  
  #define FE_ALL_EXCEPT   0x1f
  
  #define FE_TONEAREST    0   /* round to nearest representable number */
  #define FE_UPWARD       1   /* round toward positive infinity */
  #define FE_DOWNWARD     2   /* round toward negative infinity */
  #define FE_TOWARDZERO   3   /* round to zero (truncate) */
  
  __BEGIN_DECLS
  
  /* Default floating-point environment */
  extern const fenv_t   __fe_dfl_env;
  #define FE_DFL_ENV    (&__fe_dfl_env)
  
  __END_DECLS
  
  #endif /* _ARM_FENV_H_ */
  