projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 29b12174 | 1 | /* Complex sine function. m68k fpu version |
| 5da9d124 | 2 | Copyright (C) 1997, 1999 Free Software Foundation, Inc. |
| 29b12174 UD |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 3214b89b AJ |
7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 29b12174 UD |
10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3214b89b | 14 | Lesser General Public License for more details. |
| 29b12174 | 15 | |
| 3214b89b | 16 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| 29b12174 | 19 | |
| 29b12174 UD |
20 | #include <complex.h> |
| 21 | #include <math.h> | |
| 5da9d124 | 22 | #include "mathimpl.h" |
| 29b12174 UD |
23 | |
| 24 | #ifndef SUFF | |
| 25 | #define SUFF | |
| 26 | #endif | |
| 27 | #ifndef float_type | |
| 28 | #define float_type double | |
| 29 | #endif | |
| 30 | ||
| 31 | #define CONCATX(a,b) __CONCAT(a,b) | |
| 32 | #define s(name) CONCATX(name,SUFF) | |
| 33 | #define m81(func) __m81_u(s(func)) | |
| 34 | ||
| 35 | __complex__ float_type | |
| 36 | s(__csin) (__complex__ float_type x) | |
| 37 | { | |
| 38 | __complex__ float_type retval; | |
| 39 | unsigned long rx_cond = __m81_test (__real__ x); | |
| 40 | ||
| 41 | if ((rx_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0) | |
| 42 | { | |
| 43 | /* Real part is finite. */ | |
| 44 | float_type sin_rx, cos_rx; | |
| 45 | ||
| 46 | __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_rx), "=f" (cos_rx) | |
| 47 | : "f" (__real__ x)); | |
| 48 | if (rx_cond & __M81_COND_ZERO) | |
| 49 | __real__ retval = __real__ x; | |
| 50 | else | |
| 51 | __real__ retval = sin_rx * m81(__ieee754_cosh) (__imag__ x); | |
| 52 | __imag__ retval = cos_rx * m81(__ieee754_sinh) (__imag__ x); | |
| 53 | } | |
| 54 | else | |
| 55 | { | |
| 56 | unsigned long ix_cond = __m81_test (__imag__ x); | |
| 57 | ||
| 58 | __real__ retval = __real__ x - __real__ x; | |
| 59 | if (ix_cond & (__M81_COND_ZERO|__M81_COND_INF|__M81_COND_NAN)) | |
| 60 | __imag__ retval = __imag__ x; | |
| 61 | else | |
| 62 | __imag__ retval = __real__ retval; | |
| 63 | } | |
| 64 | ||
| 65 | return retval; | |
| 66 | } | |
| 67 | #define weak_aliasx(a,b) weak_alias(a,b) | |
| 68 | weak_aliasx (s(__csin), s(csin)) |