gcc/testsuite/gcc.dg/dfp/convert-bfp.c

   1 /* { dg-options "-std=gnu99" } */
   2
   3 /* N1150 5.2 Conversions among decimal floating types and between
   4    decimal floating types and generic floating types.
   5    C99 6.3.1.5(4) Conversions, arithmetic operands, real floating types.  */
   6
   7 volatile _Decimal32 d32;
   8 volatile _Decimal64 d64;
   9 volatile _Decimal128 d128;
  10 volatile float sf;
  11 volatile double df;
  12 volatile long double tf;
  13
  14 extern void abort (void);
  15
  16 int
  17 main ()
  18 {
  19   /* Conversions from decimal float to binary float. */
  20
  21   /* Conversions from _Decimal32. */
  22   d32 = 2.0df;
  23   sf = d32;
  24   if (sf != 2.0f)
  25     abort ();
  26
  27   df = d32;
  28   if (df != 2.0)
  29     abort ();
  30
  31   tf = d32;
  32   if (tf != 2.0l)
  33     abort ();
  34
  35   /* Conversions from _Decimal64. */
  36   d64 = -7.0dd;
  37   sf = d64;
  38   if (sf != -7.0f)
  39     abort ();
  40
  41   df = d64;
  42   if (df != -7.0)
  43     abort ();
  44
  45   tf = d64;
  46   if (tf != -7.0l)
  47     abort ();
  48
  49   /* Conversions from _Decimal128. */
  50   d128 = 30.0dl;
  51   sf = d128;
  52   if (sf != 30.0f)
  53     abort ();
  54
  55   df = d128;
  56   if (df != 30.0)
  57     abort ();
  58
  59   df = d128;
  60   if (df != 30.0l)
  61     abort ();
  62
  63   /* Conversions from binary float to decimal float. */
  64   sf = 30.0f;
  65   d32 = sf;
  66   if (d32 != 30.0df)
  67     abort ();
  68
  69   d64 = sf;
  70   if (d64 != 30.0dd)
  71     abort ();
  72
  73   df = -2.0;
  74   d32 = df;
  75   if (d32 != -2.0df)
  76     abort ();
  77
  78   d64 = df;
  79   if (d64 != -2.0dd)
  80     abort ();
  81
  82   d128 = df;
  83   if (d128 != -2.0dl)
  84     abort ();
  85
  86   sf = 30.0f;
  87   d128 = sf;
  88   if (d128 != 30.0dl)
  89     abort ();
  90
  91   tf = -22.0l;
  92   d32 = tf;
  93   if (d32 != -22.0df)
  94     abort ();
  95
  96   d64 = tf;
  97   if (d64 != -22.0dd)
  98     abort ();
  99
 100   d128 = tf;
 101   if (d128 != -22.0dl)
 102     abort ();
 103
 104   /* 2**(-11) = 0.00048828125. */
 105   d128 = 0.000488281251dl;
 106   sf = d128;
 107   if (sf != 0.00048828125f)
 108     abort ();
 109   /* 2**(-25) = 0.298023223876953125E-7.  */
 110   d128 = 2.98023223876953125E-8dl;
 111   df = d128;
 112   if (df < (2.9802322387695312e-08 - 0.00000000001)
 113       || df > (2.9802322387695312e-08 + 0.00000000001))
 114     abort ();
 115
 116   return 0;
 117 }