Esempio n. 1
0
void
run_inf_opt_test(double d)
{

	test("optimizations don't break infinities",
	     fpequal(d / d, NAN) && fpequal(0.0 * d, NAN));
}
Esempio n. 2
0
void
run_zero_opt_test(double d1, double d2)
{

	test("optimizations don't break the sign of 0",
	     fpequal(d1 - d2, 0.0)
	     && fpequal(-d1 + 0.0, 0.0)
	     && fpequal(-d1 - d2, -0.0)
	     && fpequal(-(d1 - d2), -0.0)
	     && fpequal(-d1 - (-d2), 0.0));
}
Esempio n. 3
0
static void
_testl(const char *exp, int line, long double actual, long double expected,
    int except)
{
	int actual_except;

	actual_except = fetestexcept(ALL_STD_EXCEPT);
	if (!fpequal(actual, expected)) {
		fprintf(stderr, "%d: %s returned %La, expecting %La\n",
		    line, exp, actual, expected);
		abort();
	}
	if (actual_except != except) {
		fprintf(stderr, "%d: %s raised 0x%x, expecting 0x%x\n",
		    line, exp, actual_except, except);
		abort();
	}
}
Esempio n. 4
0
static void testit(int testnum, float in, float out)
{

    feclearexcept(ALL_STD_EXCEPT);
    assert(fpequal(out, nearbyintf(in)));
    assert(fpequal(-out, nearbyintf(-in)));
    assert(fetestexcept(ALL_STD_EXCEPT) == 0);

    assert(fpequal(out, nearbyint(in)));
    assert(fpequal(-out, nearbyint(-in)));
    assert(fetestexcept(ALL_STD_EXCEPT) == 0);

    assert(fpequal(out, nearbyintl(in)));
    assert(fpequal(-out, nearbyintl(-in)));
    assert(fetestexcept(ALL_STD_EXCEPT) == 0);

    printf("ok %d\t\t# nearbyint(%g)\n", testnum, in);
}
Esempio n. 5
0
static int
cfpequal(long double complex x, long double complex y, int checksign)
{
	return (fpequal(creal(x), creal(y), checksign & CS_REAL)
		&& fpequal(cimag(x), cimag(y), checksign & CS_IMAG));
}
Esempio n. 6
0
void
run_tests(void)
{
	volatile long double vld;
	long double ld;
	volatile double vd;
	double d;
	volatile float vf;
	float f;
	int x;

	test("sign bits", fpequal(-0.0, -0.0) && !fpequal(0.0, -0.0));

	vd = NAN;
	test("NaN equality", fpequal(NAN, NAN) && NAN != NAN && vd != vd);

	feclearexcept(ALL_STD_EXCEPT);
	test("NaN comparison returns false", !(vd <= vd));
	/*
	 * XXX disabled; gcc/amd64 botches this IEEE 754 requirement by
	 * emitting ucomisd instead of comisd.
	 */
	skiptest("FENV_ACCESS: NaN comparison raises invalid exception",
	    fetestexcept(ALL_STD_EXCEPT) == FE_INVALID);

	vd = 0.0;
	run_zero_opt_test(vd, vd);

	vd = INFINITY;
	run_inf_opt_test(vd);

	feclearexcept(ALL_STD_EXCEPT);
	vd = INFINITY;
	x = (int)vd;
	/* XXX disabled (works with -O0); gcc doesn't support FENV_ACCESS */
	skiptest("FENV_ACCESS: Inf->int conversion raises invalid exception",
	    fetestexcept(ALL_STD_EXCEPT) == FE_INVALID);

	/* Raising an inexact exception here is an IEEE-854 requirement. */
	feclearexcept(ALL_STD_EXCEPT);
	vd = 0.75;
	x = (int)vd;
	test("0.75->int conversion rounds toward 0, raises inexact exception",
	     x == 0 && fetestexcept(ALL_STD_EXCEPT) == FE_INEXACT);

	feclearexcept(ALL_STD_EXCEPT);
	vd = -42.0;
	x = (int)vd;
	test("-42.0->int conversion is exact, raises no exception",
	     x == -42 && fetestexcept(ALL_STD_EXCEPT) == 0);

	feclearexcept(ALL_STD_EXCEPT);
	x = (int)INFINITY;
	/* XXX disabled; gcc doesn't support FENV_ACCESS */
	skiptest("FENV_ACCESS: const Inf->int conversion raises invalid",
	    fetestexcept(ALL_STD_EXCEPT) == FE_INVALID);

	feclearexcept(ALL_STD_EXCEPT);
	x = (int)0.5;
	/* XXX disabled; gcc doesn't support FENV_ACCESS */
	skiptest("FENV_ACCESS: const double->int conversion raises inexact",
	     x == 0 && fetestexcept(ALL_STD_EXCEPT) == FE_INEXACT);

	test("compile-time constants don't have too much precision",
	     one_f == 1.0L && one_d == 1.0L && one_ld == 1.0L);

	test("const minimum rounding precision",
	     1.0F + FLT_EPSILON != 1.0F &&
	     1.0 + DBL_EPSILON != 1.0 &&
	     1.0L + LDBL_EPSILON != 1.0L);

	/* It isn't the compiler's fault if this fails on FreeBSD/i386. */
	vf = FLT_EPSILON;
	vd = DBL_EPSILON;
	vld = LDBL_EPSILON;
	test("runtime minimum rounding precision",
	     1.0F + vf != 1.0F && 1.0 + vd != 1.0 && 1.0L + vld != 1.0L);

	test("explicit float to float conversion discards extra precision",
	     (float)(1.0F + FLT_EPSILON * 0.5F) == 1.0F &&
	     (float)(1.0F + vf * 0.5F) == 1.0F);
	test("explicit double to float conversion discards extra precision",
	     (float)(1.0 + FLT_EPSILON * 0.5) == 1.0F &&
	     (float)(1.0 + vf * 0.5) == 1.0F);
	test("explicit ldouble to float conversion discards extra precision",
	     (float)(1.0L + FLT_EPSILON * 0.5L) == 1.0F &&
	     (float)(1.0L + vf * 0.5L) == 1.0F);

	test("explicit double to double conversion discards extra precision",
	     (double)(1.0 + DBL_EPSILON * 0.5) == 1.0 &&
	     (double)(1.0 + vd * 0.5) == 1.0);
	test("explicit ldouble to double conversion discards extra precision",
	     (double)(1.0L + DBL_EPSILON * 0.5L) == 1.0 &&
	     (double)(1.0L + vd * 0.5L) == 1.0);

	/*
	 * FLT_EVAL_METHOD > 1 implies that float expressions are always
	 * evaluated in double precision or higher, but some compilers get
	 * this wrong when registers spill to memory.  The following expression
	 * forces a spill when there are at most 8 FP registers.
	 */
	test("implicit promption to double or higher precision is consistent",
#if FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || defined(__i386__)
	       TWICE(TWICE(TWICE(TWICE(TWICE(
	           TWICE(TWICE(TWICE(TWICE(1.0F + vf * 0.5F)))))))))
	     == (1.0 + FLT_EPSILON * 0.5) * 512.0
#else
	     1
#endif
	    );

	f = 1.0 + FLT_EPSILON * 0.5;
	d = 1.0L + DBL_EPSILON * 0.5L;
	test("const assignment discards extra precision", f == 1.0F && d == 1.0);

	f = 1.0 + vf * 0.5;
	d = 1.0L + vd * 0.5L;
	test("variable assignment discards explicit extra precision",
	     f == 1.0F && d == 1.0);
	f = 1.0F + vf * 0.5F;
	d = 1.0 + vd * 0.5;
	test("variable assignment discards implicit extra precision",
	     f == 1.0F && d == 1.0);

	test("return discards extra precision",
	     tofloat(1.0 + vf * 0.5) == 1.0F &&
	     todouble(1.0L + vd * 0.5L) == 1.0);

	fesetround(FE_UPWARD);
	/* XXX disabled (works with -frounding-math) */
	skiptest("FENV_ACCESS: constant arithmetic respects rounding mode",
	    1.0F + FLT_MIN == 1.0F + FLT_EPSILON &&
	    1.0 + DBL_MIN == 1.0 + DBL_EPSILON &&
	    1.0L + LDBL_MIN == 1.0L + LDBL_EPSILON);
	fesetround(FE_TONEAREST);

	ld = vld * 0.5;
	test("associativity is respected",
	     1.0L + ld + (LDBL_EPSILON * 0.5) == 1.0L &&
	     1.0L + (LDBL_EPSILON * 0.5) + ld == 1.0L &&
	     ld + 1.0 + (LDBL_EPSILON * 0.5) == 1.0L &&
	     ld + (LDBL_EPSILON * 0.5) + 1.0 == 1.0L + LDBL_EPSILON);
}
Esempio n. 7
0
int
main(int argc, char *argv[])
{
	static const int ntests = sizeof(tests) / sizeof(tests[0]) / 2;
	complex float in;
	complex long double expected;
	int i;

	printf("1..%d\n", ntests * 3);

	for (i = 0; i < ntests; i++) {
		__real__ expected = __real__ in = tests[2 * i];
		__imag__ in = tests[2 * i + 1];
		__imag__ expected = -cimag(in);

		assert(fpequal(libcrealf(in), __real__ in));
		assert(fpequal(libcreal(in), __real__ in));
		assert(fpequal(libcreall(in), __real__ in));
		assert(fpequal(libcimagf(in), __imag__ in));
		assert(fpequal(libcimag(in), __imag__ in));
		assert(fpequal(libcimagl(in), __imag__ in));		

		feclearexcept(FE_ALL_EXCEPT);
		if (!cfpequal(libconjf(in), expected)) {
			printf("not ok %d\t# conjf(%#.2g + %#.2gI): "
			       "wrong value\n",
			       3 * i + 1, creal(in), cimag(in));
		} else if (fetestexcept(FE_ALL_EXCEPT)) {
			printf("not ok %d\t# conjf(%#.2g + %#.2gI): "
			       "threw an exception\n",
			       3 * i + 1, creal(in), cimag(in));
		} else {
			printf("ok %d\t\t# conjf(%#.2g + %#.2gI)\n",
			       3 * i + 1, creal(in), cimag(in));
		}

		feclearexcept(FE_ALL_EXCEPT);
		if (!cfpequal(libconj(in), expected)) {
			printf("not ok %d\t# conj(%#.2g + %#.2gI): "
			       "wrong value\n",
			       3 * i + 2, creal(in), cimag(in));
		} else if (fetestexcept(FE_ALL_EXCEPT)) {
			printf("not ok %d\t# conj(%#.2g + %#.2gI): "
			       "threw an exception\n",
			       3 * i + 2, creal(in), cimag(in));
		} else {
			printf("ok %d\t\t# conj(%#.2g + %#.2gI)\n",
			       3 * i + 2, creal(in), cimag(in));
		}

		feclearexcept(FE_ALL_EXCEPT);
		if (!cfpequal(libconjl(in), expected)) {
			printf("not ok %d\t# conjl(%#.2g + %#.2gI): "
			       "wrong value\n",
			       3 * i + 3, creal(in), cimag(in));
		} else if (fetestexcept(FE_ALL_EXCEPT)) {
			printf("not ok %d\t# conjl(%#.2g + %#.2gI): "
			       "threw an exception\n",
			       3 * i + 3, creal(in), cimag(in));
		} else {
			printf("ok %d\t\t# conjl(%#.2g + %#.2gI)\n",
			       3 * i + 3, creal(in), cimag(in));
		}
	}

	return (0);
}