diff options
Diffstat (limited to 'math/s_nextdown.c')
| -rw-r--r-- | math/s_nextdown.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/math/s_nextdown.c b/math/s_nextdown.c new file mode 100644 index 0000000000..06fd1c9b12 --- /dev/null +++ b/math/s_nextdown.c @@ -0,0 +1,33 @@ +/* Return the greatest floating-point number less than X. + Copyright (C) 2016 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/>. */ + +#include <math.h> +#include <math_private.h> + +/* Return the greatest floating-point number less than X. */ +double +__nextdown (double x) +{ + return -__nextup (-x); +} + +weak_alias (__nextdown, nextdown) +#ifdef NO_LONG_DOUBLE +strong_alias (__nextdown, __nextdownl) +weak_alias (__nextdown, nextdownl) +#endif |