1 /* Compute projection of complex float type value to Riemann sphere.
2 Copyright (C) 1997-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
24 M_DECL_FUNC (__cproj) (CFLOAT x)
26 if (isinf (__real__ x) || isinf (__imag__ x))
30 __real__ res = INFINITY;
31 __imag__ res = M_COPYSIGN (0, __imag__ x);
39 declare_mgen_alias (__cproj, cproj)