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

   1 // Copyright (C) 2009-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile }
  19 // { dg-require-effective-target dfp }
  20
  21 // Test that binary comparison operators do not accept mixed decimal
  22 // and generic floating-point operands.  This isn't explicity prohibited
  23 // in ISO/IEC TR 24733 but it is prohibited in C, and in C++ there should
  24 // not be an implicit conversion from a decimal floating-point type to a
  25 // generic floating-point type.
  26
  27 #include <decimal/decimal>
  28
  29 using namespace std::decimal;
  30
  31 decimal32 a32, b32, c32;
  32 decimal64 a64, b64, c64;
  33 decimal128 a128, b128, c128;
  34 float f;
  35 double d;
  36 long double ld;
  37 bool b1, b2, b3, b4, b5, b6;
  38
  39 void
  40 bad_eq (void)
  41 {
  42   b1 = b32 == f;        // { dg-error "error" }
  43   b2 = ld == b32;       // { dg-error "error" }
  44   b3 = b64 == d;        // { dg-error "error" }
  45   b4 = ld == b64;       // { dg-error "error" }
  46   b5 = b128 == ld;      // { dg-error "error" }
  47   b6 = d == b128;       // { dg-error "error" }
  48 }
  49
  50 void
  51 bad_ne (void)
  52 {
  53   b1 = b32 != f;        // { dg-error "error" }
  54   b2 = ld != b32;       // { dg-error "error" }
  55   b3 = b64 != d;        // { dg-error "error" }
  56   b4 = ld != b64;       // { dg-error "error" }
  57   b5 = b128 != ld;      // { dg-error "error" }
  58   b6 = d != b128;       // { dg-error "error" }
  59 }
  60
  61 void
  62 bad_lt (void)
  63 {
  64   b1 = b32 < f;         // { dg-error "error" }
  65   b2 = ld < b32;        // { dg-error "error" }
  66   b3 = b64 < d;         // { dg-error "error" }
  67   b4 = ld < b64;        // { dg-error "error" }
  68   b5 = b128 < ld;       // { dg-error "error" }
  69   b6 = d < b128;        // { dg-error "error" }
  70 }
  71
  72 void
  73 bad_le (void)
  74 {
  75   b1 = b32 <= f;        // { dg-error "error" }
  76   b2 = ld <= b32;       // { dg-error "error" }
  77   b3 = b64 <= d;        // { dg-error "error" }
  78   b4 = ld <= b64;       // { dg-error "error" }
  79   b5 = b128 <= ld;      // { dg-error "error" }
  80   b6 = d <= b128;       // { dg-error "error" }
  81 }
  82
  83 void
  84 bad_gt (void)
  85 {
  86   b1 = b32 > f;         // { dg-error "error" }
  87   b2 = ld > b32;        // { dg-error "error" }
  88   b3 = b64 > d;         // { dg-error "error" }
  89   b4 = ld > b64;        // { dg-error "error" }
  90   b5 = b128 > ld;       // { dg-error "error" }
  91   b6 = d > b128;        // { dg-error "error" }
  92 }
  93
  94 void
  95 bad_ge (void)
  96 {
  97   b1 = b32 >= f;        // { dg-error "error" }
  98   b2 = ld >= b32;       // { dg-error "error" }
  99   b3 = b64 >= d;        // { dg-error "error" }
 100   b4 = ld >= b64;       // { dg-error "error" }
 101   b5 = b128 >= ld;      // { dg-error "error" }
 102   b6 = d >= b128;       // { dg-error "error" }
 103 }
 104