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path: root/validation/scheck/ok.c
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Diffstat (limited to 'validation/scheck/ok.c')
-rw-r--r--validation/scheck/ok.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/validation/scheck/ok.c b/validation/scheck/ok.c
new file mode 100644
index 00000000..1e5314f2
--- /dev/null
+++ b/validation/scheck/ok.c
@@ -0,0 +1,22 @@
+static void ok(int x)
+{
+ __assert((~x) == (~0 - x)); // true but not simplified yet
+ __assert_eq(~x, ~0 - x);
+ __assert_const(x & 0, 0);
+}
+
+static void always(int x)
+{
+ __assert((x - x) == 0); // true and simplified
+}
+
+static void assumed(int x, int a, int b)
+{
+ __assume((a & ~b) == 0);
+ __assert_eq((x ^ a) | b, x | b);
+}
+
+/*
+ * check-name: scheck-ok
+ * check-command: scheck $file
+ */