Fix mod handling of negative value in TINY

ptmcg · ptmcg · commit 2dd1c20ab3a7 · 2025-11-28T06:55:03.000-06:00
diff --git a/examples/tiny/samples/math_functions.tiny b/examples/tiny/samples/math_functions.tiny
@@ -55,7 +55,9 @@ int div(int a, int b) {
 
 int mod(int a, int b) {
     int quo := a / b;
-    return a - quo * b;
+    int ret := a - quo * b;
+    if ret < 0 then ret := ret + b; end
+    return ret;
 }
 
 float sqrt(float a) {
@@ -176,5 +178,11 @@ int main() {
     write exp(0); write endl;
     write exp(1); write endl;
 
+    i := -5;
+    repeat
+        write i; write " "; write mod(i, 3); write endl;
+        i := i + 1;
+    until i > 5
+
     return 0;
 }
