1/* Compute projection of complex float value to Riemann sphere.
2 Copyright (C) 1997-2016 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, see
18 <http://www.gnu.org/licenses/>. */
19
20#include <complex.h>
21#include <math.h>
22#include <math_private.h>
23
24
25__complex__ float
26__cprojf (__complex__ float x)
27{
28 if (isinf (__real__ x) || isinf (__imag__ x))
29 {
30 __complex__ float res;
31
32 __real__ res = INFINITY;
33 __imag__ res = __copysignf (0.0, __imag__ x);
34
35 return res;
36 }
37
38 return x;
39}
40#ifndef __cprojf
41weak_alias (__cprojf, cprojf)
42#endif
43