1 /* Complex sine hyperbole function. m68k fpu version
2 Copyright (C) 1997-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <complex.h>
20 #include <math.h>
21 #include "mathimpl.h"
22
23 #define CONCATX(a,b) __CONCAT(a,b)
24 #define s(name) M_SUF (name)
25 #define m81(func) __m81_u(s(func))
26
27 CFLOAT
s(__csinh)28 s(__csinh) (CFLOAT x)
29 {
30 CFLOAT retval;
31 unsigned long ix_cond;
32
33 ix_cond = __m81_test (__imag__ x);
34
35 if ((ix_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0)
36 {
37 /* Imaginary part is finite. */
38 FLOAT sin_ix, cos_ix;
39
40 __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix)
41 : "f" (__imag__ x));
42 __real__ retval = cos_ix * m81(__ieee754_sinh) (__real__ x);
43 if (ix_cond & __M81_COND_ZERO)
44 __imag__ retval = __imag__ x;
45 else
46 __imag__ retval = sin_ix * m81(__ieee754_cosh) (__real__ x);
47 }
48 else
49 {
50 unsigned long rx_cond = __m81_test (__real__ x);
51
52 __imag__ retval = __imag__ x - __imag__ x;
53 if (rx_cond & (__M81_COND_ZERO|__M81_COND_INF|__M81_COND_NAN))
54 __real__ retval = __real__ x;
55 else
56 __real__ retval = __imag__ retval;
57 }
58
59 return retval;
60 }
61 declare_mgen_alias (__csinh, csinh)
62