/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc. This file is part of the GNU C Library. 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #if defined(_MSC_VER) && defined(_M_ARM) #pragma function(_isnan) #endif /* _MSC_VER */ /* * @implemented */ int CDECL _isnan(double __x) { union { double* __x; double_s* x; } x; x.__x = &__x; return ( x.x->exponent == 0x7ff && ( x.x->mantissah != 0 || x.x->mantissal != 0 )); } /* * @implemented */ int CDECL _finite(double __x) { union { double* __x; double_s* x; } x; x.__x = &__x; return ((x.x->exponent & 0x7ff) != 0x7ff); }