| /* Complex sine function. m68k fpu version |
| Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <complex.h> |
| #include <math.h> |
| #include "mathimpl.h" |
| |
| #ifndef SUFF |
| #define SUFF |
| #endif |
| #ifndef float_type |
| #define float_type double |
| #endif |
| |
| #define CONCATX(a,b) __CONCAT(a,b) |
| #define s(name) CONCATX(name,SUFF) |
| #define m81(func) __m81_u(s(func)) |
| |
| __complex__ float_type |
| s(__csin) (__complex__ float_type x) |
| { |
| __complex__ float_type retval; |
| unsigned long rx_cond = __m81_test (__real__ x); |
| |
| if ((rx_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0) |
| { |
| /* Real part is finite. */ |
| float_type sin_rx, cos_rx; |
| |
| __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_rx), "=f" (cos_rx) |
| : "f" (__real__ x)); |
| if (rx_cond & __M81_COND_ZERO) |
| __real__ retval = __real__ x; |
| else |
| __real__ retval = sin_rx * m81(__ieee754_cosh) (__imag__ x); |
| __imag__ retval = cos_rx * m81(__ieee754_sinh) (__imag__ x); |
| } |
| else |
| { |
| unsigned long ix_cond = __m81_test (__imag__ x); |
| |
| __real__ retval = __real__ x - __real__ x; |
| if (ix_cond & (__M81_COND_ZERO|__M81_COND_INF|__M81_COND_NAN)) |
| __imag__ retval = __imag__ x; |
| else |
| __imag__ retval = __real__ retval; |
| } |
| |
| return retval; |
| } |
| weak_alias (s(__csin), s(csin)) |
