compare-rel-const.c

来自「用于进行gcc测试」· C语言 代码 · 共 60 行

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

/* C99 6.5.8 Relational operators.
   Compare decimal float constants against each other. */

extern void link_error (void);

int
main ()
{
  /* Compare like-typed negative constants. */
  if (-2.0dl < -2.0dl)
    link_error ();

  /* Compare like-typed constants. */
  if (-2.0dl >= .01dl)
    link_error ();

  /* Compare like-typed constants. */
  if (0.2dd > 0.02e1dd)
    link_error ();
  
  /* Compare decimal float constants of different types. */
  if (-.000005dd >= -.0000049DL)
  link_error();

  /* Test use gcc builtins for comparisons. */
  if (__builtin_isless(-2.0dl,-2.0dl))
    link_error();

  if (__builtin_isgreaterequal(-2.0dl,.01dl))
    link_error();

  if (!(__builtin_islessequal(-2.0dl, -2.0dd)))
    link_error();

  if (!(__builtin_isgreater(2.0dl, -2.0dd)))
    link_error();

  if (__builtin_islessequal(2.0df, __builtin_nand64("")))
    link_error();

  if (__builtin_islessgreater(2.0dd, __builtin_nand64("")))
    link_error();

  if (!__builtin_islessgreater(2.0dd, -2.0dd))
    link_error();

  if (!__builtin_islessgreater(-3.0dd, 2.0dd))
    link_error();

  if (__builtin_isunordered(1.1df, 0.003dd))
    link_error();

  if (!__builtin_isunordered(-3.1df, __builtin_nand32("")))
    link_error();

  return 0;
}