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4349 | Serge | 1 | /* |
2 | * ==================================================== |
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3 | * x87 FP implementation contributed to Newlib by |
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4 | * Dave Korn, November 2007. This file is placed in the |
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5 | * public domain. Permission to use, copy, modify, and |
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6 | * distribute this software is freely granted. |
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7 | * ==================================================== |
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8 | */ |
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9 | |||
10 | #if defined(__GNUC__) && !defined(_SOFT_FLOAT) |
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11 | |||
12 | #include |
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13 | |||
14 | /* |
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15 | * Fast math version of lrintf(x) |
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16 | * Return x rounded to integral value according to the prevailing |
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17 | * rounding mode. |
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18 | * Method: |
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19 | * Using inline x87 asms. |
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20 | * Exception: |
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21 | * Governed by x87 FPCR. |
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22 | */ |
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23 | |||
24 | long int _f_lrintf (float x) |
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25 | { |
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26 | long int _result; |
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27 | asm ("fistpl %0" : "=m" (_result) : "t" (x) : "st"); |
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28 | return _result; |
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29 | } |
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30 | |||
31 | #endif /* !__GNUC__ || _SOFT_FLOAT */ |
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32 |