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Diffstat (limited to 'REORG.TODO/sysdeps/s390/fpu/bits/fenv.h')
-rw-r--r-- | REORG.TODO/sysdeps/s390/fpu/bits/fenv.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/s390/fpu/bits/fenv.h b/REORG.TODO/sysdeps/s390/fpu/bits/fenv.h new file mode 100644 index 0000000000..3110ed71d4 --- /dev/null +++ b/REORG.TODO/sysdeps/s390/fpu/bits/fenv.h @@ -0,0 +1,100 @@ +/* Copyright (C) 2000-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Denis Joseph Barrow <djbarrow@de.ibm.com>. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + +/* Define bits representing the exception. We use the bit positions + of the appropriate bits in the FPU control word. */ +enum + { + FE_INVALID = +#define FE_INVALID 0x80 + FE_INVALID, + FE_DIVBYZERO = +#define FE_DIVBYZERO 0x40 + FE_DIVBYZERO, + FE_OVERFLOW = +#define FE_OVERFLOW 0x20 + FE_OVERFLOW, + FE_UNDERFLOW = +#define FE_UNDERFLOW 0x10 + FE_UNDERFLOW, + FE_INEXACT = +#define FE_INEXACT 0x08 + FE_INEXACT + }; +/* We dont use the y bit of the DXC in the floating point control register + as glibc has no FE encoding for fe inexact incremented + or fe inexact truncated. + We currently use the flag bits in the fpc + as these are sticky for feholdenv & feupdatenv as it is defined + in the HP Manpages. */ + + +#define FE_ALL_EXCEPT \ + (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + +enum + { + FE_TONEAREST = +#define FE_TONEAREST 0 + FE_TONEAREST, + FE_DOWNWARD = +#define FE_DOWNWARD 0x3 + FE_DOWNWARD, + FE_UPWARD = +#define FE_UPWARD 0x2 + FE_UPWARD, + FE_TOWARDZERO = +#define FE_TOWARDZERO 0x1 + FE_TOWARDZERO + }; + + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; /* size of fpc */ + + +/* Type representing floating-point environment. This function corresponds + to the layout of the block written by the `fstenv'. */ +typedef struct +{ + fexcept_t __fpc; + void *__unused; + /* The field __unused (formerly __ieee_instruction_pointer) is a relict from + commit "Remove PTRACE_PEEKUSER" (87b9b50f0d4b92248905e95a06a13c513dc45e59) + and isnĀ“t used anymore. */ +} 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 exceptions are masked. */ +# define FE_NOMASK_ENV ((const fenv_t *) -2) +#endif + +#if __GLIBC_USE (IEC_60559_BFP_EXT) +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) +#endif |