add tests for float conversions to u64

Note:
I removed the test that used sin()
function because it makes no sense
to use that there and besides I could
not get the test to work because
sin requires -lm linked but for some reason
make does not compile with -lm and
I get errors like undefined symbol sin.
Coerce function should do the same thing
for the purposes of that test.

tests/tests2/22_floating_point.c

@@ -14,6 +14,12 @@ test()
    }
 }
 
+double coerce(double x)
+{
+	x++;
+	return x;
+}
+
 int main()
 {
    // variables
@@ -55,7 +61,31 @@ int main()
    // type coercion
    a = 2;
    printf("%f\n", a);
-   printf("%f\n", sin(2));
+   printf("%f\n", coerce(2));
+
+   //type conversion to unsigned long int
+   float f = 3421.439;
+   double d = 7855.332231;
+   long double ld = 2469.346786989643234;
+
+   unsigned long int i;
+   i = f;
+   printf("%lu\n", i);
+   i = d;
+   printf("%lu\n", i);
+   i = ld;
+   printf("%lu\n", i);
+
+   f = -3421.439;
+   d = -7855.332231;
+   ld = -2469.346786989643234;
+   i = f;
+   printf("%lu\n", i);
+   i = d;
+   printf("%lu\n", i);
+   i = ld;
+   printf("%lu\n", i);
+
 
    return 0;
 }

tests/tests2/22_floating_point.expect

@@ -13,4 +13,10 @@
 12.340000
 -12.340000
 2.000000
-0.909297
+3.000000
+3421
+7855
+2469
+18446744073709548195
+18446744073709543761
+18446744073709549147