glibc/sysdeps/s390/fpu/fetestexceptflag.c
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2018-01-01 00:32:25 +00:00

32 lines
1.2 KiB
C

/* Test exception in saved exception state. S/390 version.
Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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/>. */
#include <fenv.h>
#include <fenv_libc.h>
int
fetestexceptflag (const fexcept_t *flagp, int excepts)
{
/* As *flagp is obtained by an earlier call of fegetexceptflag the
bits 0-5 of dxc-byte are either zero or correspond to the
flag-bits. Evaluate flags and last dxc-exception-code. */
return (((*flagp >> FPC_FLAGS_SHIFT) | (*flagp >> FPC_DXC_SHIFT))
& excepts
& FE_ALL_EXCEPT);
}