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Diffstat (limited to 'sysdeps/generic/math-nan-payload-double.h')
| -rw-r--r-- | sysdeps/generic/math-nan-payload-double.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sysdeps/generic/math-nan-payload-double.h b/sysdeps/generic/math-nan-payload-double.h new file mode 100644 index 0000000000..cfcc53a7b6 --- /dev/null +++ b/sysdeps/generic/math-nan-payload-double.h @@ -0,0 +1,29 @@ +/* NaN payload handling for double. + Copyright (C) 1997-2018 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, see + <http://www.gnu.org/licenses/>. */ + +#define SET_NAN_PAYLOAD(flt, mant) \ + do \ + { \ + union ieee754_double u; \ + u.d = (flt); \ + u.ieee_nan.mantissa0 = (mant) >> 32; \ + u.ieee_nan.mantissa1 = (mant); \ + if ((u.ieee.mantissa0 | u.ieee.mantissa1) != 0) \ + (flt) = u.d; \ + } \ + while (0) |