gcc/libstdc++-v3/testsuite/decimal/mixed-mode-cmp_neg.cc

// Copyright (C) 2009-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This 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 General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// { dg-do compile }
// { dg-require-effective-target dfp }

// Test that binary comparison operators do not accept mixed decimal
// and generic floating-point operands.  This isn't explicity prohibited
// in ISO/IEC TR 24733 but it is prohibited in C, and in C++ there should
// not be an implicit conversion from a decimal floating-point type to a
// generic floating-point type.

#include <decimal/decimal>

using namespace std::decimal;

decimal32 a32, b32, c32;
decimal64 a64, b64, c64;
decimal128 a128, b128, c128;
float f;
double d;
long double ld;
bool b1, b2, b3, b4, b5, b6;

void
bad_eq (void)
{
  b1 = b32 == f;	// { dg-error "error" }
  b2 = ld == b32;	// { dg-error "error" }
  b3 = b64 == d;	// { dg-error "error" }
  b4 = ld == b64;	// { dg-error "error" }
  b5 = b128 == ld;	// { dg-error "error" }
  b6 = d == b128;	// { dg-error "error" }
}

void
bad_ne (void)
{
  b1 = b32 != f;	// { dg-error "error" }
  b2 = ld != b32;	// { dg-error "error" }
  b3 = b64 != d;	// { dg-error "error" }
  b4 = ld != b64;	// { dg-error "error" }
  b5 = b128 != ld;	// { dg-error "error" }
  b6 = d != b128;	// { dg-error "error" }
}

void
bad_lt (void)
{
  b1 = b32 < f;		// { dg-error "error" }
  b2 = ld < b32;	// { dg-error "error" }
  b3 = b64 < d;		// { dg-error "error" }
  b4 = ld < b64;	// { dg-error "error" }
  b5 = b128 < ld;	// { dg-error "error" }
  b6 = d < b128;	// { dg-error "error" }
}

void
bad_le (void)
{
  b1 = b32 <= f;	// { dg-error "error" }
  b2 = ld <= b32;	// { dg-error "error" }
  b3 = b64 <= d;	// { dg-error "error" }
  b4 = ld <= b64;	// { dg-error "error" }
  b5 = b128 <= ld;	// { dg-error "error" }
  b6 = d <= b128;	// { dg-error "error" }
}

void
bad_gt (void)
{
  b1 = b32 > f;		// { dg-error "error" }
  b2 = ld > b32;	// { dg-error "error" }
  b3 = b64 > d;		// { dg-error "error" }
  b4 = ld > b64;	// { dg-error "error" }
  b5 = b128 > ld;	// { dg-error "error" }
  b6 = d > b128;	// { dg-error "error" }
}

void
bad_ge (void)
{
  b1 = b32 >= f;	// { dg-error "error" }
  b2 = ld >= b32;	// { dg-error "error" }
  b3 = b64 >= d;	// { dg-error "error" }
  b4 = ld >= b64;	// { dg-error "error" }
  b5 = b128 >= ld;	// { dg-error "error" }
  b6 = d >= b128;	// { dg-error "error" }
}