581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/* Declarations for SVID math error handling compatibility.
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Copyright (C) 1991-2022 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 _MATH_SVID_COMPAT_H
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#define _MATH_SVID_COMPAT_H 1
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/* Support for various different standard error handling behaviors. */
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typedef enum
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{
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_IEEE_ = -1, /* According to IEEE 754/IEEE 854. */
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_SVID_, /* According to System V, release 4. */
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_XOPEN_, /* Nowadays also Unix98. */
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_POSIX_,
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_ISOC_ /* Actually this is ISO C99. */
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} _LIB_VERSION_TYPE;
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/* This variable can be changed at run-time to any of the values above to
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affect floating point error handling behavior (it may also be necessary
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to change the hardware FPU exception settings). */
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extern _LIB_VERSION_TYPE _LIB_VERSION;
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/* In SVID error handling, `matherr' is called with this description
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of the exceptional condition. */
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struct exception
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{
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int type;
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char *name;
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double arg1;
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double arg2;
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double retval;
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};
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extern int matherr (struct exception *__exc);
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extern int __matherr (struct exception *__exc);
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#define X_TLOSS 1.41484755040568800000e+16
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#define AS_FLOAT_CONSTANT_1(x) x##f
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#define AS_FLOAT_CONSTANT(x) AS_FLOAT_CONSTANT_1(x)
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/* Types of exceptions in the `type' field. */
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#define DOMAIN 1
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#define SING 2
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#define OVERFLOW 3
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#define UNDERFLOW 4
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#define TLOSS 5
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#define PLOSS 6
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/* SVID mode specifies returning this large value instead of infinity. */
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#define HUGE 3.40282347e+38F
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/* The above definitions may be used in testcases. The following code
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is only used in the implementation. */
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#ifdef _LIBC
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/* fdlibm kernel function */
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extern double __kernel_standard (double, double, int);
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extern float __kernel_standard_f (float, float, int);
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extern long double __kernel_standard_l (long double, long double, int);
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# include <shlib-compat.h>
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# define LIBM_SVID_COMPAT SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
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# if LIBM_SVID_COMPAT
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compat_symbol_reference (libm, matherr, matherr, GLIBC_2_0);
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compat_symbol_reference (libm, _LIB_VERSION, _LIB_VERSION, GLIBC_2_0);
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# else
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/* Except when building compat code, optimize out references to
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_LIB_VERSION and matherr. */
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# define _LIB_VERSION _POSIX_
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# define matherr(EXC) ((void) (EXC), 0)
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# endif
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#endif
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#endif /* math-svid-compat.h. */
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