/* Compute projection of complex double value to Riemann sphere. Copyright (C) 1997-2014 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <complex.h> #include <math.h> __complex__ double __cproj (__complex__ double x) { if (__isinf_ns (__real__ x) || __isinf_ns (__imag__ x)) { __complex__ double res; __real__ res = INFINITY; __imag__ res = __copysign (0.0, __imag__ x); return res; } return x; } weak_alias (__cproj, cproj) #ifdef NO_LONG_DOUBLE strong_alias (__cproj, __cprojl) weak_alias (__cproj, cprojl) #endif