Optimized signbit{,f} for x86-64.
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2009-08-25 Ulrich Drepper <drepper@redhat.com>
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2009-08-25 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/x86_64/fpu/s_signbit.S: New file.
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* sysdeps/x86_64/fpu/s_signbitf.S: New file.
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* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: New file.
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* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: New file.
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* sysdeps/ieee754/dbl-64/wordsize-64/s_trunc.c: New file.
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* sysdeps/ieee754/dbl-64/wordsize-64/s_trunc.c: New file.
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@ -0,0 +1,27 @@
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/* Return nonzero value if number is negative.
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Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redha.com>, 2009.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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ENTRY(__signbit)
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pmovmskb %xmm0, %eax
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andl $0x80, %eax
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ret
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END(__signbit)
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@ -0,0 +1,27 @@
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/* Return nonzero value if number is negative.
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Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redha.com>, 2009.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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ENTRY(__signbitf)
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pmovmskb %xmm0, %eax
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andl $0x8, %eax
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ret
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END(__signbitf)
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