fix type annotation for comparison expressions

src/test/comparison/comparison.h

@@ -1,11 +1,11 @@
 #include <stdbool.h>
 
-int eq(int x, int y);
-int neq(int x, int y);
-int lt(int x, int y);
-int lte(int x, int y);
-int gt(int x, int y);
-int gte(int x, int y);
+bool eq(int x, int y);
+bool neq(int x, int y);
+bool lt(int x, int y);
+bool lte(int x, int y);
+bool gt(int x, int y);
+bool gte(int x, int y);
 
 bool and(bool a, bool b);
 bool or(bool a, bool b);

src/test/test.k

@@ -109,27 +109,27 @@ function fac(x: int): int {
   return 1;
 }
 
-function eq(x: int, y: int): int {
+function eq(x: int, y: int): bool {
   return (x == y);
 }
 
-function neq(x: int, y: int): int {
+function neq(x: int, y: int): bool {
   return (x != y);
 }
 
-function lt(x: int, y: int): int {
+function lt(x: int, y: int): bool {
   return (x < y);
 }
 
-function lte(x: int, y: int): int {
+function lte(x: int, y: int): bool {
   return (x <= y);
 }
 
-function gt(x: int, y: int): int {
+function gt(x: int, y: int): bool {
   return (x > y);
 }
 
-function gte(x: int, y: int): int {
+function gte(x: int, y: int): bool {
   return (x >= y);
 }