diff options
Diffstat (limited to 'math/w_scalbln_template.c')
-rw-r--r-- | math/w_scalbln_template.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/math/w_scalbln_template.c b/math/w_scalbln_template.c new file mode 100644 index 0000000000..11c9afe37d --- /dev/null +++ b/math/w_scalbln_template.c @@ -0,0 +1,41 @@ +/* Wrapper for __scalbln handles setting errno. + Copyright (C) 2014-2016 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 <errno.h> +#include <math.h> +#include <math_private.h> + +FLOAT +M_DECL_FUNC (__w_scalbln) (FLOAT x, long int n) +{ + if (!isfinite (x) || x == 0) + return x + x; + + x = M_SUF (__scalbln) (x, n); + + if (!isfinite (x) || x == 0) + __set_errno (ERANGE); + + return x; +} + +/* Define strong_alias to nothing because we don't want + declare_mgen_alias to create a strong alias for scalblnl. */ +#undef strong_alias +#define strong_alias(name, alias_name) +declare_mgen_alias (__w_scalbln, scalbln) |