Added more tests

tests/programs/64-bit.q

@@ -0,0 +1,12 @@
+main() {
+	x := 20000000000
+	assert x == 20000000000
+	x -= 10000000000
+	assert x == 10000000000
+	x -= 10000000000
+	assert x == 0
+	x -= 10000000000
+	assert x == -10000000000
+	x -= 10000000000
+	assert x == -20000000000
+}

tests/programs/negation.q

@@ -1,7 +1,10 @@
 main() {
-	assert f(-32) == 32
+	assert neg(-1) == 1
+	assert neg(1) == -1
+	assert neg(-256) == 256
+	assert neg(256) == -256
 }
 
-f(x) {
+neg(x) {
 	return -x
 }

tests/programs/negative.q

@@ -1,5 +1,17 @@
 main() {
-	a := -32
-	b := 64
-	assert a + b == 32
+	a := -1
+	b := -2
+	assert a == -1
+	assert a != 0xFF
+	assert a != 0xFFFF
+	assert a != 0xFFFFFFFF
+	assert b == -2
+	assert b != 0xFE
+	assert b != 0xFFFE
+	assert b != 0xFFFFFFFE
+	assert a + b == -3
+	assert a - b == 1
+	assert a * b == 2
+	assert a / b == 0
+	assert a % b == -1
 }

tests/programs/out-of-memory.q

@@ -0,0 +1,6 @@
+import mem
+
+main() {
+	address := mem.alloc(1024 * 1024 * 1024 * 1024)
+	assert address < 0
+}