sysdeps/arc/bits/fenv.h

   1 /* Floating point environment.  ARC version.
   2    Copyright (C) 2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _FENV_H
  20 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
  21 #endif
  22
  23 enum
  24   {
  25     FE_INVALID   =
  26 # define FE_INVALID     (0x01)
  27       FE_INVALID,
  28     FE_DIVBYZERO =
  29 # define FE_DIVBYZERO   (0x02)
  30       FE_DIVBYZERO,
  31     FE_OVERFLOW  =
  32 # define FE_OVERFLOW    (0x04)
  33       FE_OVERFLOW,
  34     FE_UNDERFLOW =
  35 # define FE_UNDERFLOW   (0x08)
  36       FE_UNDERFLOW,
  37     FE_INEXACT   =
  38 # define FE_INEXACT     (0x10)
  39       FE_INEXACT
  40   };
  41
  42 # define FE_ALL_EXCEPT \
  43         (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
  44
  45 enum
  46   {
  47     FE_TOWARDZERO =
  48 # define FE_TOWARDZERO  (0x0)
  49       FE_TOWARDZERO,
  50     FE_TONEAREST  =
  51 # define FE_TONEAREST   (0x1)   /* default */
  52       FE_TONEAREST,
  53     FE_UPWARD     =
  54 # define FE_UPWARD      (0x2)
  55       FE_UPWARD,
  56     FE_DOWNWARD   =
  57 # define FE_DOWNWARD    (0x3)
  58       FE_DOWNWARD
  59   };
  60
  61 typedef unsigned int fexcept_t;
  62
  63 typedef struct
  64 {
  65   unsigned int __fpcr;
  66   unsigned int __fpsr;
  67 } fenv_t;
  68
  69 /* If the default argument is used we use this value.  */
  70 #define FE_DFL_ENV      ((const fenv_t *) -1)
  71
  72 #if __GLIBC_USE (IEC_60559_BFP_EXT)
  73 /* Type representing floating-point control modes.  */
  74 typedef unsigned int femode_t;
  75
  76 /* Default floating-point control modes.  */
  77 # define FE_DFL_MODE    ((const femode_t *) -1L)
  78 #endif