1 /* Floating point environment, RISC-V version. 2 Copyright (C) 1998-2018 Free Software Foundation, Inc. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library. If not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifndef _FENV_H 19 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." 20 #endif 21 22 enum 23 { 24 FE_INEXACT = 25 #define FE_INEXACT (0x01) 26 FE_INEXACT, 27 FE_UNDERFLOW = 28 #define FE_UNDERFLOW (0x02) 29 FE_UNDERFLOW, 30 FE_OVERFLOW = 31 #define FE_OVERFLOW (0x04) 32 FE_OVERFLOW, 33 FE_DIVBYZERO = 34 #define FE_DIVBYZERO (0x08) 35 FE_DIVBYZERO, 36 FE_INVALID = 37 #define FE_INVALID (0x10) 38 FE_INVALID 39 }; 40 41 #define FE_ALL_EXCEPT \ 42 (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) 43 44 enum 45 { 46 FE_TONEAREST = 47 #define FE_TONEAREST (0x0) 48 FE_TONEAREST, 49 FE_TOWARDZERO = 50 #define FE_TOWARDZERO (0x1) 51 FE_TOWARDZERO, 52 FE_DOWNWARD = 53 #define FE_DOWNWARD (0x2) 54 FE_DOWNWARD, 55 FE_UPWARD = 56 #define FE_UPWARD (0x3) 57 FE_UPWARD 58 }; 59 60 61 typedef unsigned int fexcept_t; 62 typedef unsigned int fenv_t; 63 64 /* If the default argument is used we use this value. */ 65 #define FE_DFL_ENV ((__const fenv_t *) -1) 66 67 /* Type representing floating-point control modes. */ 68 typedef unsigned int femode_t; 69 70 /* Default floating-point control modes. */ 71 # define FE_DFL_MODE ((const femode_t *) -1L) 72