62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
// Copyright (C) 2009-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This 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
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do compile }
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// { dg-require-effective-target dfp }
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// ISO/IEC TR 24733 doesn't say explicitly that the conversion from a
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// decimal floating-point type to a generic float type is prohibited but
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// it implies that in section 4.3 when it says "In C, objects of decimal
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// floating-oint type can be converted to generic floating-point type by
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// means of an explicit cast. In C++ this is not possible." Check that
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// attempt to do a cast are flagged as errors.
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#include <decimal/decimal>
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using namespace std::decimal;
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float f;
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double d;
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long double ld;
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decimal32 d32;
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decimal64 d64;
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decimal128 d128;
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void
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foo (void)
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{
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f = d32; // { dg-error "error" }
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f = d64; // { dg-error "error" }
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f = d128; // { dg-error "error" }
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d = d32; // { dg-error "error" }
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d = d64; // { dg-error "error" }
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d = d128; // { dg-error "error" }
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ld = d32; // { dg-error "error" }
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ld = d64; // { dg-error "error" }
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ld = d128; // { dg-error "error" }
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f = (float)d32; // { dg-error "error" }
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f = (float)d64; // { dg-error "error" }
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f = (float)d128; // { dg-error "error" }
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d = (double)d32; // { dg-error "error" }
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d = (double)d64; // { dg-error "error" }
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d = (double)d128; // { dg-error "error" }
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ld = (long double)d32; // { dg-error "error" }
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ld = (long double)d64; // { dg-error "error" }
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ld = (long double)d128; // { dg-error "error" }
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}
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