C++ (Cpp) fesetexceptflag Examples

Example #1

File: fenv.c Project: SylvestreG/bitrig

/*
 * Test fegetexceptflag() and fesetexceptflag().
 *
 * Prerequisites: fetestexcept(), feclearexcept()
 */
static void
test_fegsetexceptflag(void)
{
	fexcept_t flag;
	int excepts, i;

	assert(fetestexcept(FE_ALL_EXCEPT) == 0);
	for (i = 0; i < 1 << NEXCEPTS; i++) {
		excepts = std_except_sets[i];

		assert(fegetexceptflag(&flag, excepts) == 0);
		raiseexcept(ALL_STD_EXCEPT);
		assert(fesetexceptflag(&flag, excepts) == 0);
		assert(fetestexcept(ALL_STD_EXCEPT) ==
		    (ALL_STD_EXCEPT ^ excepts));

		assert(fegetexceptflag(&flag, FE_ALL_EXCEPT) == 0);
		assert(feclearexcept(FE_ALL_EXCEPT) == 0);
		assert(fesetexceptflag(&flag, excepts) == 0);
		assert(fetestexcept(ALL_STD_EXCEPT) == 0);
		assert(fesetexceptflag(&flag, ALL_STD_EXCEPT ^ excepts) == 0);
		assert(fetestexcept(ALL_STD_EXCEPT) ==
		    (ALL_STD_EXCEPT ^ excepts));

		assert(feclearexcept(FE_ALL_EXCEPT) == 0);
	}
}

Example #2

File: fenv_test.cpp Project: MIPS/bionic

TEST(fenv, fegetexceptflag_fesetexceptflag) {
  // Set three flags.
  feclearexcept(FE_ALL_EXCEPT);
  ASSERT_EQ(0, feraiseexcept(FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW));
  ASSERT_EQ(FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW, fetestexcept(FE_ALL_EXCEPT));

  fexcept_t all; // FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW
  fexcept_t two; // FE_OVERFLOW | FE_UNDERFLOW
  ASSERT_EQ(0, fegetexceptflag(&all, FE_ALL_EXCEPT));
  ASSERT_EQ(0, fegetexceptflag(&two, FE_OVERFLOW | FE_UNDERFLOW));

  // Check we can restore all.
  feclearexcept(FE_ALL_EXCEPT);
  ASSERT_EQ(0, fesetexceptflag(&all, FE_ALL_EXCEPT));
  ASSERT_EQ(FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW, fetestexcept(FE_ALL_EXCEPT));

  // Check that `two` only stored a subset.
  feclearexcept(FE_ALL_EXCEPT);
  ASSERT_EQ(0, fesetexceptflag(&two, FE_ALL_EXCEPT));
  ASSERT_EQ(FE_OVERFLOW | FE_UNDERFLOW, fetestexcept(FE_ALL_EXCEPT));

  // Check that we can restore a single flag.
  feclearexcept(FE_ALL_EXCEPT);
  ASSERT_EQ(0, fesetexceptflag(&all, FE_DIVBYZERO));
  ASSERT_EQ(FE_DIVBYZERO, fetestexcept(FE_ALL_EXCEPT));

  // Check that we can restore a subset of flags.
  feclearexcept(FE_ALL_EXCEPT);
  ASSERT_EQ(0, fesetexceptflag(&all, FE_OVERFLOW | FE_UNDERFLOW));
  ASSERT_EQ(FE_OVERFLOW | FE_UNDERFLOW, fetestexcept(FE_ALL_EXCEPT));
}

Example #3

File: feraiseexcept.c Project: Nirlendu/mona

int feraiseexcept(int e)
{
	fexcept_t f;
	
	fegetexceptflag(&f, e);
	fesetexceptflag(&f, e);
	
	return 0;
}

Example #4

File: test-fenvinline.c Project: riscv/riscv-glibc

static void
test_exceptionflag (void)
{
  printf ("Test: fegetexceptionflag (FE_ALL_EXCEPT)\n");
#if FE_ALL_EXCEPT
  fexcept_t excepts;

  feclearexcept (FE_ALL_EXCEPT);

  feraiseexcept (FE_INVALID);
  fegetexceptflag (&excepts, FE_ALL_EXCEPT);

  feclearexcept (FE_ALL_EXCEPT);
  feraiseexcept (FE_OVERFLOW | FE_INEXACT);

  fesetexceptflag (&excepts, FE_ALL_EXCEPT);

  test_single_exception_fp_int (INVALID_EXC, INVALID_EXC, FE_INVALID,
				"INVALID (int)");
  test_single_exception_fp_int (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW,
				"OVERFLOW (int)");
  test_single_exception_fp_int (INVALID_EXC, INEXACT_EXC, FE_INEXACT,
				"INEXACT (int)");

  /* Same test, but using double as argument  */
  feclearexcept (FE_ALL_EXCEPT);

  feraiseexcept (FE_INVALID);
  fegetexceptflag (&excepts, (double)FE_ALL_EXCEPT);

  feclearexcept (FE_ALL_EXCEPT);
  feraiseexcept (FE_OVERFLOW | FE_INEXACT);

  fesetexceptflag (&excepts, (double)FE_ALL_EXCEPT);

  test_single_exception_fp_double (INVALID_EXC, INVALID_EXC, FE_INVALID,
				   "INVALID (double)");
  test_single_exception_fp_double (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW,
				   "OVERFLOW (double)");
  test_single_exception_fp_double (INVALID_EXC, INEXACT_EXC, FE_INEXACT,
				   "INEXACT (double)");
#endif
}

Example #5

File: fenv-softfp.c Project: SylvestreG/bitrig

/*
 * The feraiseexcept() function raises the supported floating-point exceptions
 * represented by the argument `excepts'.
 */
int
feraiseexcept(int excepts)
{
	excepts &= FE_ALL_EXCEPT;

	fesetexceptflag((fexcept_t *)&excepts, excepts);
	_softfloat_float_raise(excepts);

	return (0);
}

Example #6

File: config.hpp Project: cran/revoIPC

 ~fpu_guard()
 {
    fesetexceptflag(&m_flags, FE_ALL_EXCEPT);
 }