Mercurial > hg > CbC > CbC_gcc
comparison libquadmath/math/casinhq.c @ 68:561a7518be6b
update gcc-4.6
author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
---|---|
date | Sun, 21 Aug 2011 07:07:55 +0900 |
parents | |
children | 04ced10e8804 |
comparison
equal
deleted
inserted
replaced
67:f6334be47118 | 68:561a7518be6b |
---|---|
1 /* Return arc hyperbole sine for __float128 value. | |
2 Copyright (C) 1997, 1998 Free Software Foundation, Inc. | |
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 | |
17 License along with the GNU C Library; if not, write to the Free | |
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 02111-1307 USA. */ | |
20 | |
21 #include "quadmath-imp.h" | |
22 | |
23 | |
24 __complex128 | |
25 casinhq (__complex128 x) | |
26 { | |
27 __complex128 res; | |
28 int rcls = fpclassifyq (__real__ x); | |
29 int icls = fpclassifyq (__imag__ x); | |
30 | |
31 if (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE) | |
32 { | |
33 if (icls == QUADFP_INFINITE) | |
34 { | |
35 __real__ res = copysignq (HUGE_VALQ, __real__ x); | |
36 | |
37 if (rcls == QUADFP_NAN) | |
38 __imag__ res = nanq (""); | |
39 else | |
40 __imag__ res = copysignq (rcls >= QUADFP_ZERO ? M_PI_2q : M_PI_4q, | |
41 __imag__ x); | |
42 } | |
43 else if (rcls <= QUADFP_INFINITE) | |
44 { | |
45 __real__ res = __real__ x; | |
46 if ((rcls == QUADFP_INFINITE && icls >= QUADFP_ZERO) | |
47 || (rcls == QUADFP_NAN && icls == QUADFP_ZERO)) | |
48 __imag__ res = copysignq (0.0, __imag__ x); | |
49 else | |
50 __imag__ res = nanq (""); | |
51 } | |
52 else | |
53 { | |
54 __real__ res = nanq (""); | |
55 __imag__ res = nanq (""); | |
56 } | |
57 } | |
58 else if (rcls == QUADFP_ZERO && icls == QUADFP_ZERO) | |
59 { | |
60 res = x; | |
61 } | |
62 else | |
63 { | |
64 __complex128 y; | |
65 | |
66 __real__ y = (__real__ x - __imag__ x) * (__real__ x + __imag__ x) + 1.0; | |
67 __imag__ y = 2.0 * __real__ x * __imag__ x; | |
68 | |
69 y = csqrtq (y); | |
70 | |
71 __real__ y += __real__ x; | |
72 __imag__ y += __imag__ x; | |
73 | |
74 res = clogq (y); | |
75 } | |
76 | |
77 return res; | |
78 } |