compare-eq-dfp.c

来自「用于进行gcc测试」· C语言 代码 · 共 66 行

/* { dg-options "-std=gnu99 -O0" } */

/* C99 6.5.9 Equality operators.
   Compare decimal float values against variables of different types.  */

extern void abort (void);
static int failcnt;

/* Support compiling the test to report individual failures; default is
   to abort as soon as a check fails.  */
#ifdef DBG
#include <stdio.h>
#define FAILURE { printf ("failed at line %d\n", __LINE__); failcnt++; }
#else
#define FAILURE abort ();
#endif

_Decimal32 d32;
_Decimal64 d64;
_Decimal128 d128;

/* Use some typedefs of decimal float types, too.  */
typedef _Decimal32 SDtype;
typedef _Decimal64 DDtype;
typedef _Decimal128 TDtype;

SDtype d32b;
DDtype d64b;
TDtype d128b;

void
inits (void)
{
  d32 = 1.0df;
  d64 = 3.0dd;
  d128 = 5.0dl;
  d32b = -1.0df;
  d64b = -4.0dd;
  d128b = -6.0dl;
}

void
compare_dfp (void)
{
  if ((d32 == d64) != 0) FAILURE
  if ((d32 != d128b) != 1) FAILURE

  if ((d64 != d32) != 1) FAILURE
  if ((d64 == d128) != 0) FAILURE

  if ((d128 != d32) != 1) FAILURE
  if ((d128 == d64) != 0) FAILURE
}

int
main ()
{
  inits ();

  compare_dfp ();

  if (failcnt)
    abort ();
  return 0;
}