From 6b06704d35f43a019ce3bd3d2221aef3d8e2cba3 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Mon, 28 Apr 2025 12:49:31 +0200 Subject: csky: add fenv support from glibc --- libm/csky/feupdateenv.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 libm/csky/feupdateenv.c (limited to 'libm/csky/feupdateenv.c') diff --git a/libm/csky/feupdateenv.c b/libm/csky/feupdateenv.c new file mode 100644 index 000000000..91e627ad2 --- /dev/null +++ b/libm/csky/feupdateenv.c @@ -0,0 +1,42 @@ +/* Install given floating-point environment and raise exceptions. + Copyright (C) 2018-2025 Free Software Foundation, Inc. + + 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 + . */ + +#include +#include +#include "fenv_libc.h" +#include "fenv_private.h" +#include + +int +feupdateenv (const fenv_t *envp) +{ + int temp; + + /* Save current exceptions. */ + _FPU_GETFPSR (temp); + temp = (temp >> CAUSE_SHIFT) & FE_ALL_EXCEPT; + /* Install new environment. */ + fesetenv (envp); + + /* Raise the saved exception. Incidentally for us the implementation + defined format of the values in objects of type fexcept_t is the + same as the ones specified using the FE_* constants. */ + feraiseexcept (temp); + + /* Success. */ + return 0; +} -- cgit v1.2.3