From 05ef7ce90dbb9125cdcd6ea2525efad6d1c585b7 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 12 Nov 1999 17:23:30 +0000 Subject: Update. 1999-11-02 Andreas Jaeger * Versions.def: Add version GLIBC_2.2 for libm. * math/fenv.h: Add prototypes for fegetexcept, feenableexcept and fedisableexcept. * sysdeps/generic/feenablxcpt.c: Stub file. * sysdeps/generic/fedisblxcpt.c: Stub file. * sysdeps/generic/fegetexcept.c: Stub file. * sysdeps/i386/fpu/fedisblxcpt.c: New file. * sysdeps/i386/fpu/feenablxcpt.c: New file. * sysdeps/i386/fpu/fegetexcept.c: New file. * math/Makefile (libm-support): Add new files. * math/Versions: Add new functions with version GLIBC_2.2. * manual/arith.texi (Control Functions): Document fegetexcept, feenableexcept and fedisableexcept. --- sysdeps/generic/fedisblxcpt.c | 30 ++++++++++++++++++++++++++++++ sysdeps/generic/feenablxcpt.c | 30 ++++++++++++++++++++++++++++++ sysdeps/generic/fegetexcept.c | 30 ++++++++++++++++++++++++++++++ sysdeps/i386/fpu/fedisblxcpt.c | 39 +++++++++++++++++++++++++++++++++++++++ sysdeps/i386/fpu/feenablxcpt.c | 38 ++++++++++++++++++++++++++++++++++++++ sysdeps/i386/fpu/fegetexcept.c | 32 ++++++++++++++++++++++++++++++++ 6 files changed, 199 insertions(+) create mode 100644 sysdeps/generic/fedisblxcpt.c create mode 100644 sysdeps/generic/feenablxcpt.c create mode 100644 sysdeps/generic/fegetexcept.c create mode 100644 sysdeps/i386/fpu/fedisblxcpt.c create mode 100644 sysdeps/i386/fpu/feenablxcpt.c create mode 100644 sysdeps/i386/fpu/fegetexcept.c (limited to 'sysdeps') diff --git a/sysdeps/generic/fedisblxcpt.c b/sysdeps/generic/fedisblxcpt.c new file mode 100644 index 0000000..0605fd8 --- /dev/null +++ b/sysdeps/generic/fedisblxcpt.c @@ -0,0 +1,30 @@ +/* Disable floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +fedisableexcept (int excepts) +{ + /* Signal failure. */ + return -1; +} +stub_warning (fedisableexcept) +#include diff --git a/sysdeps/generic/feenablxcpt.c b/sysdeps/generic/feenablxcpt.c new file mode 100644 index 0000000..08a832b --- /dev/null +++ b/sysdeps/generic/feenablxcpt.c @@ -0,0 +1,30 @@ +/* Enable floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +feenableexcept (int excepts) +{ + /* Signal failure. */ + return -1; +} +stub_warning (feenableexcept) +#include diff --git a/sysdeps/generic/fegetexcept.c b/sysdeps/generic/fegetexcept.c new file mode 100644 index 0000000..32cc014 --- /dev/null +++ b/sysdeps/generic/fegetexcept.c @@ -0,0 +1,30 @@ +/* Get floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +fegetexcept (void) +{ + /* Signal failure. */ + return -1; +} +stub_warning (fegetexcept) +#include diff --git a/sysdeps/i386/fpu/fedisblxcpt.c b/sysdeps/i386/fpu/fedisblxcpt.c new file mode 100644 index 0000000..0cb570f --- /dev/null +++ b/sysdeps/i386/fpu/fedisblxcpt.c @@ -0,0 +1,39 @@ +/* Disable floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +fedisableexcept (int excepts) +{ + unsigned short int new_exc, old_exc; + + /* Get the current control word. */ + __asm__ ("fstcw %0" : "=m" (*&new_exc)); + + old_exc = new_exc & FE_ALL_EXCEPT; + + excepts &= FE_ALL_EXCEPT; + + new_exc &= ~excepts; + __asm__ ("fldcw %0" : : "m" (*&new_exc)); + + return old_exc; +} diff --git a/sysdeps/i386/fpu/feenablxcpt.c b/sysdeps/i386/fpu/feenablxcpt.c new file mode 100644 index 0000000..b9877d4 --- /dev/null +++ b/sysdeps/i386/fpu/feenablxcpt.c @@ -0,0 +1,38 @@ +/* Enable floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +feenableexcept (int excepts) +{ + unsigned short int new_exc, old_exc; + + /* Get the current control word. */ + __asm__ ("fstcw %0" : "=m" (*&new_exc)); + + excepts &= FE_ALL_EXCEPT; + old_exc = new_exc & FE_ALL_EXCEPT; + + new_exc |= excepts; + __asm__ ("fldcw %0" : : "m" (*&new_exc)); + + return old_exc; +} diff --git a/sysdeps/i386/fpu/fegetexcept.c b/sysdeps/i386/fpu/fegetexcept.c new file mode 100644 index 0000000..310a717 --- /dev/null +++ b/sysdeps/i386/fpu/fegetexcept.c @@ -0,0 +1,32 @@ +/* Get enabled floating-point exceptions. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger , 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +int +fegetexcept (void) +{ + unsigned short int exc; + + /* Get the current control word. */ + __asm__ ("fstcw %0" : "=m" (*&exc)); + + return exc & FE_ALL_EXCEPT; +} -- cgit v1.1