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4239f144 JM |
1 | /* Return arc hyperbolic sine for a complex float type. |
2 | Copyright (C) 1997-2018 Free Software Foundation, Inc. | |
fa23b182 JJ |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
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. | |
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 | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
4239f144 JM |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
fa23b182 JJ |
19 | |
20 | #include "quadmath-imp.h" | |
21 | ||
fa23b182 JJ |
22 | __complex128 |
23 | casinhq (__complex128 x) | |
24 | { | |
25 | __complex128 res; | |
26 | int rcls = fpclassifyq (__real__ x); | |
27 | int icls = fpclassifyq (__imag__ x); | |
28 | ||
29 | if (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE) | |
30 | { | |
31 | if (icls == QUADFP_INFINITE) | |
32 | { | |
33 | __real__ res = copysignq (HUGE_VALQ, __real__ x); | |
34 | ||
35 | if (rcls == QUADFP_NAN) | |
36 | __imag__ res = nanq (""); | |
37 | else | |
4239f144 JM |
38 | __imag__ res = copysignq ((rcls >= QUADFP_ZERO |
39 | ? M_PI_2q : M_PI_4q), | |
40 | __imag__ x); | |
fa23b182 JJ |
41 | } |
42 | else if (rcls <= QUADFP_INFINITE) | |
43 | { | |
44 | __real__ res = __real__ x; | |
45 | if ((rcls == QUADFP_INFINITE && icls >= QUADFP_ZERO) | |
46 | || (rcls == QUADFP_NAN && icls == QUADFP_ZERO)) | |
4239f144 | 47 | __imag__ res = copysignq (0, __imag__ x); |
fa23b182 JJ |
48 | else |
49 | __imag__ res = nanq (""); | |
50 | } | |
51 | else | |
52 | { | |
53 | __real__ res = nanq (""); | |
54 | __imag__ res = nanq (""); | |
55 | } | |
56 | } | |
57 | else if (rcls == QUADFP_ZERO && icls == QUADFP_ZERO) | |
58 | { | |
59 | res = x; | |
60 | } | |
61 | else | |
62 | { | |
4239f144 | 63 | res = __quadmath_kernel_casinhq (x, 0); |
fa23b182 JJ |
64 | } |
65 | ||
66 | return res; | |
67 | } |