baddc

commit 6f534ecd133ffd027a14597973f50b31bb0f7fa0
parent b63c06bf44decb57a1e901a53daabb8645a2acb8
Author: phoebos <ben@bvnf.space>
Date:   Mon, 31 Jan 2022 11:10:17 +0000

warn when rooting negative numbers

Diffstat:
M
baddc.c
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/baddc.c b/baddc.c
@@ -128,7 +128,11 @@ void power(void) {
 }
 
 void root(void) {
-	push((int)sqrt((double)pop()));
+	int a = pop();
+	if (a < 0) {
+		fprintf(stderr, "root of negative number!\n");
+	}
+	push((int)sqrt((double)a));
 }
 
 struct {