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79aa2424 | 1 | /* Complex cosine hyperbole function. m68k fpu version |
bfff8b1b | 2 | Copyright (C) 1997-2017 Free Software Foundation, Inc. |
79aa2424 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. | |
79aa2424 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. |
79aa2424 | 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/>. */ | |
79aa2424 | 19 | |
79aa2424 UD |
20 | #include <complex.h> |
21 | #include <math.h> | |
5da9d124 | 22 | #include "mathimpl.h" |
79aa2424 | 23 | |
01ee3870 | 24 | #define s(name) M_SUF (name) |
79aa2424 UD |
25 | #define m81(func) __m81_u(s(func)) |
26 | ||
01ee3870 PM |
27 | CFLOAT |
28 | s(__ccosh) (CFLOAT x) | |
79aa2424 | 29 | { |
01ee3870 | 30 | CFLOAT retval; |
e7af313d | 31 | unsigned long ix_cond = __m81_test (__imag__ x); |
79aa2424 | 32 | |
e7af313d | 33 | if ((ix_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0) |
79aa2424 | 34 | { |
e7af313d | 35 | /* Imaginary part is finite. */ |
01ee3870 | 36 | FLOAT sin_ix, cos_ix; |
79aa2424 | 37 | |
e7af313d UD |
38 | __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix) |
39 | : "f" (__imag__ x)); | |
40 | __real__ retval = cos_ix * m81(__ieee754_cosh) (__real__ x); | |
41 | if (ix_cond & __M81_COND_ZERO) | |
92dd2ecf | 42 | __imag__ retval = (signbit (__real__ x) |
e7af313d | 43 | ? -__imag__ x : __imag__ x); |
79aa2424 | 44 | else |
e7af313d | 45 | __imag__ retval = sin_ix * m81(__ieee754_sinh) (__real__ x); |
79aa2424 | 46 | } |
e7af313d | 47 | else |
79aa2424 | 48 | { |
e7af313d | 49 | unsigned long rx_cond = __m81_test (__real__ x); |
79aa2424 | 50 | |
e7af313d UD |
51 | if (rx_cond & __M81_COND_ZERO) |
52 | { | |
53 | __real__ retval = __imag__ x - __imag__ x; | |
54 | __imag__ retval = __real__ x; | |
79aa2424 UD |
55 | } |
56 | else | |
57 | { | |
e7af313d UD |
58 | if (rx_cond & __M81_COND_INF) |
59 | __real__ retval = s(fabs) (__real__ x); | |
60 | else | |
a9e6c76a | 61 | __real__ retval = s(__nan) (""); |
e7af313d | 62 | __imag__ retval = __imag__ x - __imag__ x; |
79aa2424 UD |
63 | } |
64 | } | |
79aa2424 UD |
65 | |
66 | return retval; | |
67 | } | |
615f651b | 68 | weak_alias (s(__ccosh), s(ccosh)) |