Current File : //proc/thread-self/root/usr/include/bits/iscanonical.h
/* Define iscanonical macro. ldbl-96 version.
Copyright (C) 2016-2018 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/>. */
#ifndef _MATH_H
# error "Never use <bits/iscanonical.h> directly; include <math.h> instead."
#endif
extern int __iscanonicall (long double __x)
__THROW __attribute__ ((__const__));
#define __iscanonicalf(x) ((void) (__typeof (x)) (x), 1)
#define __iscanonical(x) ((void) (__typeof (x)) (x), 1)
#if __HAVE_DISTINCT_FLOAT128
# define __iscanonicalf128(x) ((void) (__typeof (x)) (x), 1)
#endif
/* 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. */
#ifndef __cplusplus
# define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))
#else
/* In C++ mode, __MATH_TG cannot be used, because it relies on
__builtin_types_compatible_p, which is a C-only builtin. On the
other hand, overloading provides the means to distinguish between
the floating-point types. The overloading resolution will match
the correct parameter (regardless of type qualifiers (i.e.: const
and volatile)). */
extern "C++" {
inline int iscanonical (float __val) { return __iscanonicalf (__val); }
inline int iscanonical (double __val) { return __iscanonical (__val); }
inline int iscanonical (long double __val) { return __iscanonicall (__val); }
# if __HAVE_DISTINCT_FLOAT128
inline int iscanonical (_Float128 __val) { return __iscanonicalf128 (__val); }
# endif
}
#endif /* __cplusplus */
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