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1 | /* |
2 | This Software is provided under the Zope Public License (ZPL) Version 2.1. | |
3 | ||
4 | Copyright (c) 2009, 2010 by the mingw-w64 project | |
5 | ||
6 | See the AUTHORS file for the list of contributors to the mingw-w64 project. | |
7 | ||
8 | This license has been certified as open source. It has also been designated | |
9 | as GPL compatible by the Free Software Foundation (FSF). | |
10 | ||
11 | Redistribution and use in source and binary forms, with or without | |
12 | modification, are permitted provided that the following conditions are met: | |
13 | ||
14 | 1. Redistributions in source code must retain the accompanying copyright | |
15 | notice, this list of conditions, and the following disclaimer. | |
16 | 2. Redistributions in binary form must reproduce the accompanying | |
17 | copyright notice, this list of conditions, and the following disclaimer | |
18 | in the documentation and/or other materials provided with the | |
19 | distribution. | |
20 | 3. Names of the copyright holders must not be used to endorse or promote | |
21 | products derived from this software without prior written permission | |
22 | from the copyright holders. | |
23 | 4. The right to distribute this software or to use it for any purpose does | |
24 | not give you the right to use Servicemarks (sm) or Trademarks (tm) of | |
25 | the copyright holders. Use of them is covered by separate agreement | |
26 | with the copyright holders. | |
27 | 5. If any files are modified, you must cause the modified files to carry | |
28 | prominent notices stating that you changed the files and the date of | |
29 | any change. | |
30 | ||
31 | Disclaimer | |
32 | ||
33 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED | |
34 | OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
35 | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
36 | EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
37 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
38 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
39 | OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
40 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
41 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
42 | EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
43 | */ | |
44 | ||
45 | __FLT_TYPE __complex__ __cdecl | |
46 | __FLT_ABI(clog) (__FLT_TYPE __complex__ z) | |
47 | { | |
48 | __complex__ __FLT_TYPE ret; | |
49 | int r_class = fpclassify (__real__ z); | |
50 | int i_class = fpclassify (__imag__ z); | |
51 | ||
52 | if (r_class == FP_ZERO && i_class == FP_ZERO) | |
53 | { | |
54 | __imag__ ret = signbit (__real__ z) ? __FLT_PI : __FLT_CST(0.0); | |
55 | __imag__ ret = __FLT_ABI(copysign) (__imag__ ret, __imag__ z); | |
56 | __real__ ret = -__FLT_CST(1.0) / __FLT_ABI(fabs) (__real__ z); | |
57 | return ret; | |
58 | } | |
59 | ||
60 | if (r_class == FP_NAN || i_class == FP_NAN) | |
61 | { | |
62 | __imag__ ret = __FLT_NAN; | |
63 | __real__ ret = ((r_class == FP_INFINITE || i_class == FP_INFINITE) ? __FLT_HUGE_VAL : __FLT_NAN); | |
64 | ||
65 | return ret; | |
66 | } | |
67 | ||
68 | __real__ ret = __FLT_ABI(log) (__FLT_ABI(hypot) (__real__ z, __imag__ z)); | |
69 | __imag__ ret = __FLT_ABI(atan2) (__imag__ z, __real__ z); | |
70 | return ret; | |
71 | } |