Add clamp_to float tests

Author: Kyuuhachi

library/coretests/tests/floats/mod.rs

@@ -1256,6 +1256,48 @@ float_test! {
     }
 }
 
+float_test! {
+    name: clamp_to_min_greater_than_max,
+    attrs: {
+        const: #[cfg(false)],
+        f16: #[should_panic, cfg(any(miri, target_has_reliable_f16))],
+        f32: #[should_panic],
+        f64: #[should_panic],
+        f128: #[should_panic, cfg(any(miri, target_has_reliable_f128))],
+    },
+    test<Float> {
+        let _ = Float::ONE.clamp_to(3.0..=1.0);
+    }
+}
+
+float_test! {
+    name: clamp_to_min_is_nan,
+    attrs: {
+        const: #[cfg(false)],
+        f16: #[should_panic, cfg(any(miri, target_has_reliable_f16))],
+        f32: #[should_panic],
+        f64: #[should_panic],
+        f128: #[should_panic, cfg(any(miri, target_has_reliable_f128))],
+    },
+    test<Float> {
+        let _ = Float::ONE.clamp_to(Float::NAN..=1.0);
+    }
+}
+
+float_test! {
+    name: clamp_to_max_is_nan,
+    attrs: {
+        const: #[cfg(false)],
+        f16: #[should_panic, cfg(any(miri, target_has_reliable_f16))],
+        f32: #[should_panic],
+        f64: #[should_panic],
+        f128: #[should_panic, cfg(any(miri, target_has_reliable_f128))],
+    },
+    test<Float> {
+        let _ = Float::ONE.clamp_to(3.0..=Float::NAN);
+    }
+}
+
 float_test! {
     name: total_cmp,
     attrs: {