1 /* Compute projection of complex float value to Riemann sphere.
2 Copyright (C) 1997, 1999, 2010 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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.
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.
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/>. */
25 __cprojf (__complex__ float x)
27 if (isnan (__real__ x) && isnan (__imag__ x))
29 else if (!isfinite (__real__ x) || !isfinite (__imag__ x))
31 __complex__ float res;
33 __real__ res = INFINITY;
34 __imag__ res = __copysignf (0.0, __imag__ x);
42 weak_alias (__cprojf, cprojf)