diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/bits')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/bits/iscanonical.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-96/bits/iscanonical.h b/sysdeps/ieee754/ldbl-96/bits/iscanonical.h new file mode 100644 index 0000000000..af0c72cc7f --- /dev/null +++ b/sysdeps/ieee754/ldbl-96/bits/iscanonical.h @@ -0,0 +1,35 @@ +/* Define iscanonical macro. ldbl-96 version. + 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 + +extern int __iscanonicall (long double __x) + __THROW __attribute__ ((__const__)); + +/* Return nonzero value if X is canonical. In IEEE interchange binary + formats, 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; in extended precision, there + are encodings that are not consistently handled as corresponding to + any particular value of the type, and we return 0 for those. */ +#define iscanonical(x) \ + (sizeof (x) == sizeof (long double) \ + ? __iscanonicall (x) \ + : ((void) (__typeof (x)) (x), 1)) |