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Diffstat (limited to 'bits/iscanonical.h')
| -rw-r--r-- | bits/iscanonical.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/bits/iscanonical.h b/bits/iscanonical.h new file mode 100644 index 0000000000..97eb736ce3 --- /dev/null +++ b/bits/iscanonical.h @@ -0,0 +1,28 @@ +/* Define iscanonical macro. + 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/>. */ + +#ifndef _MATH_H +# error "Never use <bits/iscanonical.h> directly; include <math.h> instead." +#endif + +/* Return nonzero value if X is canonical. By default, we only have + IEEE interchange binary formats, in which all values are canonical, + but the argument must still be converted to its semantic type for + any exceptions arising from the conversion, before being + discarded. */ +#define iscanonical(x) ((void) (__typeof (x)) (x), 1) |