| /* |
| Copyright 2007 |
| International Business Machines Corporation, |
| Sony Computer Entertainment, Incorporated, |
| Toshiba 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 names of the copyright holders nor the names of their |
| 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 <errno.h> |
| |
| /* |
| * dom_chkd_less_than: "domain check double less than" |
| * |
| * Set errno to EDOM if vx < vc. |
| * |
| * This is for scalar use only, the input is a vector double, but both |
| * values in both vectors must be the same. |
| */ |
| |
| static __inline void dom_chkd_less_than (vector double vx, vector double vc) |
| { |
| vector unsigned long long domain; |
| vector signed int verrno; |
| vector signed int fail = { EDOM, EDOM, EDOM, EDOM }; |
| |
| domain = spu_cmpgt(vc, vx); |
| verrno = spu_splats(errno); |
| /* |
| * domain is 2 long longs, but they have the same value. Even so, no |
| * special code is needed to extract the scalar errno (we have all ones |
| * or all zeroes for the preferred scalar slot). |
| */ |
| errno = spu_extract(spu_sel(verrno, fail, (vector unsigned int) domain), 0); |
| } |