projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c50eee19 | 1 | /* Return arc hyperbolic sine for a complex float type. |
| 04277e02 | 2 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
| ffb84f5e PM |
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, see | |
| 5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
| ffb84f5e PM |
19 | |
| 20 | #include <complex.h> | |
| 21 | #include <math.h> | |
| ffb84f5e | 22 | |
| c50eee19 PM |
23 | CFLOAT |
| 24 | M_DECL_FUNC (__casinh) (CFLOAT x) | |
| ffb84f5e | 25 | { |
| c50eee19 | 26 | CFLOAT res; |
| ffb84f5e PM |
27 | int rcls = fpclassify (__real__ x); |
| 28 | int icls = fpclassify (__imag__ x); | |
| 29 | ||
| 30 | if (rcls <= FP_INFINITE || icls <= FP_INFINITE) | |
| 31 | { | |
| 32 | if (icls == FP_INFINITE) | |
| 33 | { | |
| c50eee19 | 34 | __real__ res = M_COPYSIGN (M_HUGE_VAL, __real__ x); |
| ffb84f5e PM |
35 | |
| 36 | if (rcls == FP_NAN) | |
| c50eee19 | 37 | __imag__ res = M_NAN; |
| ffb84f5e | 38 | else |
| c50eee19 PM |
39 | __imag__ res = M_COPYSIGN ((rcls >= FP_ZERO |
| 40 | ? M_MLIT (M_PI_2) : M_MLIT (M_PI_4)), | |
| ffb84f5e PM |
41 | __imag__ x); |
| 42 | } | |
| 43 | else if (rcls <= FP_INFINITE) | |
| 44 | { | |
| 45 | __real__ res = __real__ x; | |
| 46 | if ((rcls == FP_INFINITE && icls >= FP_ZERO) | |
| 47 | || (rcls == FP_NAN && icls == FP_ZERO)) | |
| c50eee19 | 48 | __imag__ res = M_COPYSIGN (0, __imag__ x); |
| ffb84f5e | 49 | else |
| c50eee19 | 50 | __imag__ res = M_NAN; |
| ffb84f5e PM |
51 | } |
| 52 | else | |
| 53 | { | |
| c50eee19 PM |
54 | __real__ res = M_NAN; |
| 55 | __imag__ res = M_NAN; | |
| ffb84f5e PM |
56 | } |
| 57 | } | |
| 58 | else if (rcls == FP_ZERO && icls == FP_ZERO) | |
| 59 | { | |
| 60 | res = x; | |
| 61 | } | |
| 62 | else | |
| 63 | { | |
| c50eee19 | 64 | res = M_SUF (__kernel_casinh) (x, 0); |
| ffb84f5e PM |
65 | } |
| 66 | ||
| 67 | return res; | |
| 68 | } | |
| c50eee19 PM |
69 | |
| 70 | declare_mgen_alias (__casinh, casinh) |