/* Define iscanonical macro. ldbl-96 version.

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Copyright (C) 2016-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _MATH_H

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# error "Never use <bits/iscanonical.h> directly; include <math.h> instead."

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#endif

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extern int __iscanonicall (long double __x)

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__THROW __attribute__ ((__const__));

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#define __iscanonicalf(x) ((void) (__typeof (x)) (x), 1)

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#define __iscanonical(x) ((void) (__typeof (x)) (x), 1)

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#if __HAVE_DISTINCT_FLOAT128

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# define __iscanonicalf128(x) ((void) (__typeof (x)) (x), 1)

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#endif

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/* Return nonzero value if X is canonical. In IEEE interchange binary

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formats, all values are canonical, but the argument must still be

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converted to its semantic type for any exceptions arising from the

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conversion, before being discarded; in extended precision, there

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are encodings that are not consistently handled as corresponding to

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any particular value of the type, and we return 0 for those. */

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#ifndef __cplusplus

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# define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))

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#else

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/* In C++ mode, __MATH_TG cannot be used, because it relies on

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__builtin_types_compatible_p, which is a C-only builtin. On the

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other hand, overloading provides the means to distinguish between

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the floating-point types. The overloading resolution will match

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the correct parameter (regardless of type qualifiers (i.e.: const

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and volatile)). */

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extern "C++" {

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inline int iscanonical (float __val) { return __iscanonicalf (__val); }

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inline int iscanonical (double __val) { return __iscanonical (__val); }

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inline int iscanonical (long double __val) { return __iscanonicall (__val); }

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# if __HAVE_DISTINCT_FLOAT128

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inline int iscanonical (_Float128 __val) { return __iscanonicalf128 (__val); }

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# endif

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}

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#endif /* __cplusplus */

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