diff options
Diffstat (limited to 'sysdeps/m68k/fpu/s_csinh.c')
| -rw-r--r-- | sysdeps/m68k/fpu/s_csinh.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_csinh.c b/sysdeps/m68k/fpu/s_csinh.c new file mode 100644 index 0000000000..c409ed0d8f --- /dev/null +++ b/sysdeps/m68k/fpu/s_csinh.c @@ -0,0 +1,128 @@ +/* Complex sine hyperbole function. m68k fpu version + Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#define __LIBC_M81_MATH_INLINES +#include <complex.h> +#include <math.h> + +#ifndef SUFF +#define SUFF +#endif +#ifndef huge_val +#define huge_val HUGE_VAL +#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(__csinh) (__complex__ float_type x) +{ + __complex__ float_type retval; + int negate = m81(__signbit) (__real__ x); + + __real__ x = s(fabs) (__real__ x); + + if (m81(__finite) (__real__ x)) + { + if (m81(__finite) (__imag__ x)) + { + float_type sinh_val; + float_type sin_ix, cos_ix; + + __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix) + : "f" (__imag__ x)); + sinh_val = m81(__ieee754_sinh) (__real__ x); + __real__ retval = cos_ix * sinh_val; + __imag__ retval = sin_ix * sinh_val; + + if (negate) + __real__ retval = -__real__ retval; + } + else if (__real__ x == 0) + { + __real__ retval = 0.0; + __imag__ retval = 0.0/0.0; + + if (negate) + __real__ retval = -__real__ retval; + } + else + __real__ retval = __imag__ retval = 0.0/0.0; + } + else if (m81(__isinf) (__real__ x)) + { + if (__imag__ x == 0.0) + { + __real__ retval = negate ? -huge_val : huge_val; + __imag__ retval = __imag__ x; + } + else if (m81(__finite) (__imag__ x)) + { + float_type remainder, pi_2; + int quadrant; + __real__ retval = __imag__ retval = huge_val; + + __asm ("fmovecr %#0,%0\n\tfscale%.w %#-1,%0" : "=f" (pi_2)); + __asm ("fmod%.x %2,%0\n\tfmove%.l %/fpsr,%1" + : "=f" (remainder), "=dm" (quadrant) + : "f" (pi_2), "0" (__imag__ x)); + quadrant = (quadrant >> 16) & 0x83; + if (quadrant & 0x80) + quadrant ^= 0x83; + if (negate) + quadrant ^= 1; + switch (quadrant) + { + default: + break; + case 1: + __real__ retval = -__real__ retval; + break; + case 2: + __real__ retval = -__real__ retval; + case 3: + __imag__ retval = -__imag__ retval; + break; + } + } + else + { + /* The subtraction raises the invalid exception. */ + __real__ retval = huge_val; + __imag__ retval = huge_val - huge_val; + } + } + else if (__imag__ x == 0.0) + { + __real__ retval = 0.0/0.0; + __imag__ retval = __imag__ x; + } + else + __real__ retval = __imag__ retval = 0.0/0.0; + + return retval; +} +#define weak_aliasx(a,b) weak_alias(a,b) +weak_aliasx (s(__csinh), s(csinh)) |