void
arb_hypgeom_erfc(arb_t res, const arb_t z, slong prec)
{
if (!arb_is_finite(z))
{
arb_indeterminate(res);
}
else
{
acb_t t;
acb_init(t);
arb_set(acb_realref(t), z);
acb_hypgeom_erfc(t, t, prec);
arb_swap(res, acb_realref(t));
acb_clear(t);
}
}
int main()
{
slong iter;
flint_rand_t state;
flint_printf("erfc....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
{
acb_t a, b, c;
slong prec1, prec2, prec3, prec4;
prec1 = 2 + n_randint(state, 1000);
prec2 = 2 + n_randint(state, 1000);
prec3 = 2 + n_randint(state, 1000);
prec4 = 2 + n_randint(state, 1000);
acb_init(a);
acb_init(b);
acb_init(c);
acb_randtest_special(a, state, 1 + n_randint(state, 1000), 1 + n_randint(state, 100));
acb_randtest_special(b, state, 1 + n_randint(state, 1000), 1 + n_randint(state, 100));
acb_randtest_special(c, state, 1 + n_randint(state, 1000), 1 + n_randint(state, 100));
switch (n_randint(state, 4))
{
case 0:
acb_hypgeom_erf_asymp(b, a, 1, prec1, prec3);
break;
case 1:
acb_hypgeom_erf(b, a, prec1);
acb_sub_ui(b, b, 1, prec1);
acb_neg(b, b);
break;
default:
acb_hypgeom_erfc(b, a, prec1);
}
switch (n_randint(state, 4))
{
case 0:
acb_hypgeom_erf_asymp(c, a, 1, prec2, prec4);
break;
case 1:
acb_hypgeom_erf(c, a, prec2);
acb_sub_ui(c, c, 1, prec2);
acb_neg(c, c);
break;
default:
acb_hypgeom_erfc(c, a, prec2);
}
if (!acb_overlaps(b, c))
{
flint_printf("FAIL: overlap\n\n");
flint_printf("a = "); acb_printd(a, 30); flint_printf("\n\n");
flint_printf("b = "); acb_printd(b, 30); flint_printf("\n\n");
flint_printf("c = "); acb_printd(c, 30); flint_printf("\n\n");
abort();
}
acb_clear(a);
acb_clear(b);
acb_clear(c);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
