Data commit

Task/Primality-by-trial-division/E/primality-by-trial-division.e

@@ -0,0 +1,16 @@
+def isPrime(n :int) {
+    if (n == 2) {
+        return true
+    } else if (n <= 1 || n %% 2 == 0) {
+        return false
+    } else {
+        def limit := (n :float64).sqrt().ceil()
+        var divisor := 1
+        while ((divisor += 2) <= limit) {
+            if (n %% divisor == 0) {
+                return false
+            }
+        }
+        return true
+    }
+}