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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
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/* Raise given exceptions.
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Copyright (C) 2018-2022 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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#include <fenv.h>
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#include <fenv_libc.h>
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#include <fpu_control.h>
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#include <float.h>
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#include <math.h>
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int
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__feraiseexcept (int excepts)
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{
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/* Raise exceptions represented by EXCEPTS. But we must raise only one
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signal at a time. It is important that if the overflow/underflow
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exception and the divide by zero exception are given at the same
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time, the overflow/underflow exception follows the divide by zero
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exception. */
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# ifndef __csky_fpuv1__
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/* First: invalid exception. */
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if (FE_INVALID & excepts)
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{
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/* One example of a invalid operation is 0 * Infinity. */
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float x = HUGE_VALF, y = 0.0f;
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__asm__ __volatile__ ("fmuls %0, %0, %1" : "+v" (x) : "v" (y));
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}
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/* Next: division by zero. */
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if (FE_DIVBYZERO & excepts)
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{
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float x = 1.0f, y = 0.0f;
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__asm__ __volatile__ ("fdivs %0, %0, %1" : "+v" (x) : "v" (y));
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}
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/* Next: overflow. */
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if (FE_OVERFLOW & excepts)
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{
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float x = FLT_MAX;
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__asm__ __volatile__ ("fmuls %0, %0, %0" : "+v" (x));
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}
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/* Next: underflow. */
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if (FE_UNDERFLOW & excepts)
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{
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float x = -FLT_MIN;
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__asm__ __volatile__ ("fmuls %0, %0, %0" : "+v" (x));
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}
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/* Last: inexact. */
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if (FE_INEXACT & excepts)
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{
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float x = 1.0f, y = 3.0f;
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__asm__ __volatile__ ("fdivs %0, %0, %1" : "+v" (x) : "v" (y));
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}
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if (__FE_DENORMAL & excepts)
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{
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double x = 4.9406564584124654e-324;
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__asm__ __volatile__ ("fstod %0, %0" : "+v" (x));
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}
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# else
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int tmp = 0;
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/* First: invalid exception. */
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if (FE_INVALID & excepts)
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{
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/* One example of a invalid operation is 0 * Infinity. */
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float x = HUGE_VALF, y = 0.0f;
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__asm__ __volatile__ ("fmuls %0, %0, %2, %1"
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: "+f" (x), "+r"(tmp) : "f" (y));
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}
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/* Next: division by zero. */
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if (FE_DIVBYZERO & excepts)
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{
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float x = 1.0f, y = 0.0f;
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__asm__ __volatile__ ("fdivs %0, %0, %2, %1"
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: "+f" (x), "+r"(tmp) : "f" (y));
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}
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/* Next: overflow. */
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if (FE_OVERFLOW & excepts)
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{
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float x = FLT_MAX, y = FLT_MAX;
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__asm__ __volatile__ ("fmuls %0, %0, %2, %1"
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: "+f" (x), "+r"(tmp) : "f" (y));
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}
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/* Next: underflow. */
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if (FE_UNDERFLOW & excepts)
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{
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float x = -FLT_MIN, y = -FLT_MIN;
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__asm__ __volatile__ ("fmuls %0, %0, %2, %1"
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: "+f" (x), "+r"(tmp) : "f" (y));
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}
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/* Last: inexact. */
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if (FE_INEXACT & excepts)
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{
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float x = 1.0f, y = 3.0f;
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__asm__ __volatile__ ("fdivs %0, %0, %2, %1"
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: "+f" (x), "+r"(tmp) : "f" (y));
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}
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# endif /* __csky_fpuv2__ */
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/* Success. */
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return 0;
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}
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libm_hidden_def (__feraiseexcept)
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weak_alias (__feraiseexcept, feraiseexcept)
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libm_hidden_weak (feraiseexcept)
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