1 /* NaN payload handling for double. 2 Copyright (C) 1997-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 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. 9 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. 14 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/>. */ 18 19 #define SET_NAN_PAYLOAD(flt, mant) \ 20 do \ 21 { \ 22 union ieee754_double u; \ 23 u.d = (flt); \ 24 u.ieee_nan.mantissa0 = (mant) >> 32; \ 25 u.ieee_nan.mantissa1 = (mant); \ 26 if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \ 27 (flt) = u.d; \ 28 } \ 29 while (0) 30