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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3362 | Serge | 1 | /* |
| 2 | * ==================================================== |
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| 3 | * Copyright (C) 1998, 2002 by Red Hat Inc. All rights reserved. |
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| 4 | * |
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| 5 | * Permission to use, copy, modify, and distribute this |
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| 6 | * software is freely granted, provided that this notice |
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| 7 | * is preserved. |
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| 8 | * ==================================================== |
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| 9 | */ |
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| 10 | |||
| 11 | #if !defined(_SOFT_FLOAT) |
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| 12 | |||
| 13 | /* |
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| 14 | Fast version of atan2 using Intel float instructions. |
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| 15 | |||
| 16 | double _f_atan2 (double y, double x); |
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| 17 | |||
| 18 | Function computes arctan ( y / x ). |
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| 19 | There is no error checking or setting of errno. |
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| 20 | */ |
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| 21 | |||
| 22 | #include "i386mach.h" |
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| 23 | |||
| 24 | .global SYM (_f_atan2) |
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| 25 | SOTYPE_FUNCTION(_f_atan2) |
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| 26 | |||
| 27 | SYM (_f_atan2): |
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| 28 | pushl ebp |
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| 29 | movl esp,ebp |
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| 30 | fldl 8(ebp) |
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| 31 | fldl 16(ebp) |
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| 32 | fpatan |
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| 33 | |||
| 34 | leave |
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| 35 | ret |
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| 36 | |||
| 37 | #endif |