1 | /* sf_trunc.c -- define truncf |
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2 | Copyright (c) 2011, 2012 ARM Ltd. All rights reserved. |
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3 | |
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4 | Redistribution and use in source and binary forms, with or without |
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5 | modification, are permitted provided that the following conditions |
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6 | are met: |
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7 | 1. Redistributions of source code must retain the above copyright |
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8 | notice, this list of conditions and the following disclaimer. |
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9 | 2. Redistributions in binary form must reproduce the above copyright |
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10 | notice, this list of conditions and the following disclaimer in the |
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11 | documentation and/or other materials provided with the distribution. |
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12 | 3. The name of the company may not be used to endorse or promote |
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13 | products derived from this software without specific prior written |
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14 | permission. |
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15 | |
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16 | THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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17 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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18 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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19 | IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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20 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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21 | TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
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26 | |
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27 | #include <math.h> |
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28 | |
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29 | float |
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30 | truncf (float x) |
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31 | { |
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32 | float result; |
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33 | asm ("frintz\t%s0, %s1" : "=w" (result) : "w" (x)); |
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34 | return result; |
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35 | } |
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