4.115
Last change
on this file since 2369b10 was
c499856,
checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47
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Change all references of rtems.com to rtems.org.
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Property mode set to
100644
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File size:
1.1 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Divide Timestamp |
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5 | * @ingroup SuperCore |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2007. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/score/timestamp.h> |
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22 | |
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23 | /* This method is never inlined. */ |
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24 | #if CPU_TIMESTAMP_USE_INT64 == TRUE || CPU_TIMESTAMP_USE_INT64_INLINE == TRUE |
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25 | void _Timestamp64_Divide( |
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26 | const Timestamp64_Control *_lhs, |
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27 | const Timestamp64_Control *_rhs, |
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28 | uint32_t *_ival_percentage, |
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29 | uint32_t *_fval_percentage |
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30 | ) |
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31 | { |
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32 | Timestamp64_Control answer; |
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33 | |
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34 | if ( *_rhs == 0 ) { |
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35 | *_ival_percentage = 0; |
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36 | *_fval_percentage = 0; |
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37 | return; |
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38 | } |
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39 | |
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40 | /* |
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41 | * This looks odd but gives the results the proper precision. |
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42 | * |
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43 | * TODO: Rounding on the last digit of the fval. |
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44 | */ |
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45 | |
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46 | answer = (*_lhs * 100000) / *_rhs; |
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47 | |
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48 | *_ival_percentage = answer / 1000; |
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49 | *_fval_percentage = answer % 1000; |
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50 | } |
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51 | #endif |
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