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| author | James Rose <james.rose@intel.com> | 2014-11-12 12:05:54 -0700 |
|---|---|---|
| committer | Christopher Ferris <cferris@google.com> | 2015-03-06 16:48:30 -0800 |
| commit | 45789b63db5c186f1ccac23093c198ae8b0dd921 (patch) | |
| tree | d430f81478cdcaf9841cd5edb960e76c8a727da5 /libm/x86_64/sqrtf.S | |
| parent | 71bf837982446b31f435031ed2d10aa1c8c15988 (diff) | |
| download | bionic-45789b63db5c186f1ccac23093c198ae8b0dd921.zip bionic-45789b63db5c186f1ccac23093c198ae8b0dd921.tar.gz bionic-45789b63db5c186f1ccac23093c198ae8b0dd921.tar.bz2 | |
libm: Add hardware sqrt, ceil, floor and trunc for x86 & x86_64
Add hardware implementations for sqrt, ceil, floor and trunc for
x86 and x86_64. These routines, and in particular sqrt are much
faster than the BSD C language versions of these functions.
Fixed whitespace errors.
Revised x86 versions with respect to alignment.
Rebased for Android 5.0
Change-Id: I86bdb520ce5e589b0cf63778f353fbd3263c8f0e
Author: James Rose <james.rose@intel.com>
Signed-off-by: James Rose <james.rose@intel.com>
Diffstat (limited to 'libm/x86_64/sqrtf.S')
| -rw-r--r-- | libm/x86_64/sqrtf.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libm/x86_64/sqrtf.S b/libm/x86_64/sqrtf.S new file mode 100644 index 0000000..910407f --- /dev/null +++ b/libm/x86_64/sqrtf.S @@ -0,0 +1,36 @@ +/* +Copyright (c) 2014, Intel Corporation +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + + * Neither the name of Intel Corporation nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#include <private/bionic_asm.h> + +ENTRY(sqrtf) +sqrtss %xmm0,%xmm0 +retq +END(sqrtf) |