diff options
Diffstat (limited to 'sysdeps/m68k/m680x0/fpu/s_ccosh.c')
| -rw-r--r-- | sysdeps/m68k/m680x0/fpu/s_ccosh.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/sysdeps/m68k/m680x0/fpu/s_ccosh.c b/sysdeps/m68k/m680x0/fpu/s_ccosh.c new file mode 100644 index 0000000000..249516c15d --- /dev/null +++ b/sysdeps/m68k/m680x0/fpu/s_ccosh.c @@ -0,0 +1,76 @@ +/* Complex cosine hyperbole 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(__ccosh) (__complex__ float_type x) +{ + __complex__ float_type retval; + unsigned long ix_cond = __m81_test (__imag__ x); + + if ((ix_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0) + { + /* Imaginary part is finite. */ + float_type sin_ix, cos_ix; + + __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix) + : "f" (__imag__ x)); + __real__ retval = cos_ix * m81(__ieee754_cosh) (__real__ x); + if (ix_cond & __M81_COND_ZERO) + __imag__ retval = (signbit (__real__ x) + ? -__imag__ x : __imag__ x); + else + __imag__ retval = sin_ix * m81(__ieee754_sinh) (__real__ x); + } + else + { + unsigned long rx_cond = __m81_test (__real__ x); + + if (rx_cond & __M81_COND_ZERO) + { + __real__ retval = __imag__ x - __imag__ x; + __imag__ retval = __real__ x; + } + else + { + if (rx_cond & __M81_COND_INF) + __real__ retval = s(fabs) (__real__ x); + else + __real__ retval = s(__nan) (""); + __imag__ retval = __imag__ x - __imag__ x; + } + } + + return retval; +} +weak_alias (s(__ccosh), s(ccosh)) |