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Last change
on this file since 519 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
767 bytes
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| 1 | /* |
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| 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 | |
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| 10 | #if defined(__GNUC__) && !defined(_SOFT_FLOAT) |
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| 11 | |
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| 12 | #include <math.h> |
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| 13 | |
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| 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 | |
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| 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 | |
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| 31 | #endif /* !__GNUC__ || _SOFT_FLOAT */ |
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| 32 | |
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