diff options
Diffstat (limited to 'sysdeps/x86_64/fpu')
| -rw-r--r-- | sysdeps/x86_64/fpu/s_signbit.S | 27 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/s_signbitf.S | 27 |
2 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/s_signbit.S b/sysdeps/x86_64/fpu/s_signbit.S new file mode 100644 index 0000000000..0bfd62e30d --- /dev/null +++ b/sysdeps/x86_64/fpu/s_signbit.S @@ -0,0 +1,27 @@ +/* Return nonzero value if number is negative. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redha.com>, 2009. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + +ENTRY(__signbit) + pmovmskb %xmm0, %eax + andl $0x80, %eax + ret +END(__signbit) diff --git a/sysdeps/x86_64/fpu/s_signbitf.S b/sysdeps/x86_64/fpu/s_signbitf.S new file mode 100644 index 0000000000..f0681d0124 --- /dev/null +++ b/sysdeps/x86_64/fpu/s_signbitf.S @@ -0,0 +1,27 @@ +/* Return nonzero value if number is negative. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redha.com>, 2009. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + +ENTRY(__signbitf) + pmovmskb %xmm0, %eax + andl $0x8, %eax + ret +END(__signbitf) |