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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/* Copyright (C) 2000-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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/* Define bits representing the exception. We use the bit positions
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of the appropriate bits in the FPU control word. */
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enum
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{
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FE_INVALID =
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#define FE_INVALID 0x80
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FE_INVALID,
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FE_DIVBYZERO =
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#define FE_DIVBYZERO 0x40
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FE_DIVBYZERO,
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FE_OVERFLOW =
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#define FE_OVERFLOW 0x20
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FE_OVERFLOW,
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FE_UNDERFLOW =
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#define FE_UNDERFLOW 0x10
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FE_UNDERFLOW,
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FE_INEXACT =
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#define FE_INEXACT 0x08
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FE_INEXACT
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};
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/* We dont use the y bit of the DXC in the floating point control register
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as glibc has no FE encoding for fe inexact incremented
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or fe inexact truncated.
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We currently use the flag bits in the fpc
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as these are sticky for feholdenv & feupdatenv as it is defined
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in the HP Manpages. */
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#define FE_ALL_EXCEPT \
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(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
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enum
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{
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FE_TONEAREST =
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#define FE_TONEAREST 0
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FE_TONEAREST,
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FE_DOWNWARD =
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#define FE_DOWNWARD 0x3
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FE_DOWNWARD,
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FE_UPWARD =
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#define FE_UPWARD 0x2
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FE_UPWARD,
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FE_TOWARDZERO =
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#define FE_TOWARDZERO 0x1
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FE_TOWARDZERO
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};
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/* Type representing exception flags. */
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typedef unsigned int fexcept_t; /* size of fpc */
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/* Type representing floating-point environment. This function corresponds
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to the layout of the block used by fegetenv and fesetenv. */
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typedef struct
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{
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fexcept_t __fpc;
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void *__unused;
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/* The field __unused (formerly __ieee_instruction_pointer) is a relict from
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commit "Remove PTRACE_PEEKUSER" (87b9b50f0d4b92248905e95a06a13c513dc45e59)
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and isn't used anymore. */
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} fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((const fenv_t *) -1)
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#ifdef __USE_GNU
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/* Floating-point environment where none of the exceptions are masked. */
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# define FE_NOMASK_ENV ((const fenv_t *) -2)
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#endif
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#if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
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/* Type representing floating-point control modes. */
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typedef unsigned int femode_t;
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/* Default floating-point control modes. */
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# define FE_DFL_MODE ((const femode_t *) -1L)
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#endif
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