gcc/testsuite/c-c++-common/dfp/convert-int-max.c

   1 /* { dg-options "-O0 -w" } */
   2
   3 /* N1150 5.1 Conversions from decimal float to integer.  */
   4
   5 /* Test decimal float to integer conversions for values at the limit of
   6    what will fit into the destination type.  This assumes 32-bit int and
   7    64-bit long long (there's a check for that below).  */
   8
   9 #include "dfp-dbg.h"
  10
  11 volatile _Decimal32 d32;
  12 volatile _Decimal64 d64;
  13 volatile _Decimal128 d128;
  14 volatile int si;
  15 volatile unsigned int ui;
  16 volatile long long sll;
  17 volatile unsigned long long ull;
  18
  19 void
  20 doit ()
  21 {
  22   /* _Decimal32 to int.  */
  23
  24   d32 = 2147483.E3DF;
  25   si = d32;
  26   if (si != 2147483000)
  27     FAILURE
  28
  29   d32 = -2147483.E3DF;
  30   si = d32;
  31   if (si != -2147483000)
  32     FAILURE
  33
  34   /* _Decimal32 to unsigned int.  */
  35
  36   d32 = 4.294967E9DF;
  37   ui = d32;
  38   if (ui != 4294967000U)
  39     FAILURE
  40
  41   /* _Decimal32 to long long.  */
  42
  43   d32 = 922.3372E16DF;
  44   sll = d32;
  45   if (sll != 9223372000000000000LL)
  46     FAILURE
  47
  48   d32 = -92233.72E14DF;
  49   sll = d32;
  50   if (sll != -9223372000000000000LL)
  51     FAILURE
  52
  53   /* _Decimal32 to unsigned long long.  */
  54
  55   d32 = .1844674E20DF;
  56   ull = d32;
  57   if (ull != 18446740000000000000ULL)
  58     FAILURE
  59
  60   /* _Decimal64 to int.  */
  61
  62   d64 = 2.147483647E9DD;
  63   si = d64;
  64   if (si != 2147483647)
  65     FAILURE
  66
  67   d64 = -2147483648.DD;
  68   si = d64;
  69   if (si != -2147483648)
  70     FAILURE
  71
  72   /* _Decimal64 to unsigned int.  */
  73
  74   d64 = 42949.67295E5DD;
  75   ui = d64;
  76   if (ui != 4294967295)
  77     FAILURE
  78
  79   /* _Decimal64 to long long.  */
  80
  81   d64 = 9.223372036854775E18DD;
  82   sll = d64;
  83   if (sll != 9223372036854775000LL)
  84     FAILURE
  85
  86   d64 = -92233720.36854775E11DD;
  87   sll = d64;
  88   if (sll != -9223372036854775000LL)
  89     FAILURE
  90
  91   /* _Decimal64 to unsigned long long.  */
  92   d64 = 1844674407370955.E4DD;
  93   ull = d64;
  94   if (ull != 18446744073709550000ULL)
  95     FAILURE
  96
  97   /* _Decimal128 to int.  */
  98
  99   d128 = 2.147483647E9DL;
 100   si = d128;
 101   if (si != 2147483647)
 102     FAILURE
 103
 104   d128 = -2147483648.DL;
 105   si = d128;
 106   if (si != -2147483648)
 107     FAILURE
 108
 109   /* _Decimal128 to unsigned int.  */
 110
 111   d128 = 4294.967295E6DL;
 112   ui = d128;
 113   if (ui != 4294967295)
 114     FAILURE
 115
 116   /* _Decimal128 to long long.  */
 117
 118   d128 = 9223372036854775807.DL;
 119   sll = d128;
 120   if (sll != 9223372036854775807LL)
 121     FAILURE
 122
 123   d128 = -9.223372036854775808E19DL;
 124   sll = d128;
 125   if (sll != -9223372036854775807LL - 1LL)
 126     FAILURE
 127
 128   /* _Decimal128 to unsigned long long.  */
 129   d128 = 18446744073709551615.DL;
 130   ull = d128;
 131   if (ull != 18446744073709551615ULL)
 132     FAILURE
 133 }
 134
 135 int
 136 main ()
 137 {
 138   /* This test assumes 32-bit int and 64-bit long long.  */
 139
 140   if (sizeof (int) != 4 || sizeof (long long) != 8)
 141     return 0;
 142
 143   doit ();
 144
 145   FINISH
 146 }