1  #include <float.h>
       2  #include <math.h>
       3  #include <stdio.h>
       4  #include <string.h>
       5  
       6  static int
       7  do_test (void)
       8  {
       9  #if LDBL_MANT_DIG >= 106
      10    volatile union { long double l; long long x[2]; } u, v;
      11    char buf[64];
      12  #endif
      13    int result = 0;
      14  
      15  #if LDBL_MANT_DIG == 106 || LDBL_MANT_DIG == 113
      16  # define COMPARE_LDBL(u, v) \
      17    ((u).l == (v).l && (u).x[0] == (v).x[0] && (u).x[1] == (v).x[1])
      18  #else
      19  # define COMPARE_LDBL(u, v) ((u).l == (v).l)
      20  #endif
      21  
      22  #define TEST(val) \
      23    do									   \
      24      {									   \
      25        u.l = (val);							   \
      26        snprintf (buf, sizeof buf, "%LaL", u.l);				   \
      27        if (strcmp (buf, #val) != 0)					   \
      28  	{								   \
      29  	  printf ("Error on line %d: %s != %s\n", __LINE__, buf, #val);	   \
      30  	  result = 1;							   \
      31  	}								   \
      32        if (sscanf (#val, "%La", &v.l) != 1 || !COMPARE_LDBL (u, v))	   \
      33  	{								   \
      34  	  printf ("Error sscanf on line %d: %La != %La\n", __LINE__,	   \
      35  		  u.l, v.l);						   \
      36  	  result = 1;							   \
      37  	}								   \
      38        /* printf ("%s %La %016Lx %016Lx\n", #val, u.l, u.x[0], u.x[1]); */  \
      39      }									   \
      40    while (0)
      41  
      42  #if LDBL_MANT_DIG >= 106
      43  # if LDBL_MANT_DIG == 106
      44    TEST (0x0.ffffffffffffp-1022L);
      45    TEST (0x0.ffffffffffff1p-1022L);
      46    TEST (0x0.fffffffffffffp-1022L);
      47  # endif
      48    TEST (0x1p-1022L);
      49    TEST (0x1.0000000000001p-1022L);
      50    TEST (0x1.00000000001e7p-1022L);
      51    TEST (0x1.fffffffffffffp-1022L);
      52    TEST (0x1p-1021L);
      53    TEST (0x1.00000000000008p-1021L);
      54    TEST (0x1.0000000000001p-1021L);
      55    TEST (0x1.00000000000018p-1021L);
      56    TEST (0x1.0000000000000f8p-1017L);
      57    TEST (0x1.0000000000001p-1017L);
      58    TEST (0x1.000000000000108p-1017L);
      59    TEST (0x1.000000000000dcf8p-1013L);
      60    TEST (0x1.000000000000ddp-1013L);
      61    TEST (0x1.000000000000dd08p-1013L);
      62    TEST (0x1.ffffffffffffffffffffffffffp-1L);
      63    TEST (0x1.ffffffffffffffffffffffffff8p-1L);
      64    TEST (0x1p+0L);
      65    TEST (0x1.000000000000000000000000008p+0L);
      66    TEST (0x1.00000000000000000000000001p+0L);
      67    TEST (0x1.000000000000000000000000018p+0L);
      68    TEST (0x1.23456789abcdef123456789abc8p+0L);
      69    TEST (0x1.23456789abcde7123456789abc8p+0L);
      70    TEST (0x1.23456789abcdef123456789abc8p+64L);
      71    TEST (0x1.23456789abcde7123456789abc8p+64L);
      72    TEST (0x1.123456789abcdef123456789p-969L);
      73  # if LDBL_MANT_DIG == 106
      74    TEST (-0x1.2d71957cc1263bbbeb1d365f1e8p-969L);
      75    TEST (0x1.23456789abcdef0123456789abp-970L);
      76    TEST (0x1.579bde02468acp-1001L);
      77    TEST (0x0.abcdef0123456p-1022L);
      78    TEST (0x1.abcdef0123456p-1022L);
      79    TEST (0x1.abcdef012345678p-1014L);
      80    TEST (0x1.abcdef0123456f8p-1014L);
      81  # endif
      82  #endif
      83    return result;
      84  }
      85  
      86  #define TEST_FUNCTION do_test ()
      87  #include "../test-skeleton.c"