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

   1 /* { dg-options "-O2" } */
   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 #include "dfp-dbg.h"
   8
   9 _Decimal32 d32;
  10 _Decimal64 d64;
  11 _Decimal128 d128;
  12 float sf;
  13 double df;
  14 long double tf;
  15
  16 extern void link_error (void);
  17
  18 int
  19 main ()
  20 {
  21   /* Conversions from decimal float to binary float. */
  22
  23   /* Conversions from _Decimal32. */
  24   d32 = 2.0df;
  25   sf = d32;
  26   if (sf != 2.0f)
  27     link_error ();
  28
  29   df = d32;
  30   if (df != 2.0)
  31     link_error ();
  32
  33   tf = d32;
  34   if (tf != 2.0l)
  35     link_error ();
  36
  37   /* Conversions from _Decimal64. */
  38   d64 = -7.0dd;
  39   sf = d64;
  40   if (sf != -7.0f)
  41     link_error ();
  42
  43   df = d64;
  44   if (df != -7.0)
  45     link_error ();
  46
  47   tf = d64;
  48   if (tf != -7.0l)
  49     link_error ();
  50
  51   /* Conversions from _Decimal128. */
  52   d128 = 30.0dl;
  53   sf = d128;
  54   if (sf != 30.0f)
  55     link_error ();
  56
  57   df = d128;
  58   if (df != 30.0)
  59     link_error ();
  60
  61   df = d128;
  62   if (df != 30.0l)
  63     link_error ();
  64
  65   /* Conversions from binary float to decimal float. */
  66   sf = 30.0f;
  67   d128 = sf;
  68   if (d128 != 30.0dl)
  69     link_error ();
  70
  71   d64 = sf;
  72   if (d64 != 30.0dd)
  73     link_error ();
  74
  75   d32 = sf;
  76   if (d32 != 30.0df)
  77     link_error ();
  78
  79   df = -2.0;
  80   d128 = df;
  81   if (d128 != -2.0dl)
  82     link_error ();
  83
  84   d64 = df;
  85   if (d64 != -2.0dd)
  86     link_error ();
  87
  88   d32 = df;
  89   if (d32 != -2.0df)
  90     link_error ();
  91
  92   tf = -22.0l;
  93   d128 = tf;
  94   if (d128 != -22.0dl)
  95     link_error ();
  96
  97   d64 = tf;
  98   if (d64 != -22.0dd)
  99     link_error ();
 100
 101   d32 = tf;
 102   if (d32 != -22.0df)
 103     link_error ();
 104
 105   /* 2**(-11) = 0.00048828125. */
 106   d128 = 0.000488281251dl;
 107   sf = d128;
 108   if (sf != 0.00048828125f)
 109     link_error ();
 110   /* 2**(-25) = 0.298023223876953125E-7.  */
 111   d128 = 2.98023223876953125E-8dl;
 112   df = d128;
 113   if (df < (2.9802322387695312e-08 - 0.00000000001)
 114       || df > (2.9802322387695312e-08 + 0.00000000001))
 115     link_error ();
 116
 117   return 0;
 118 }