Unify and deduplicate From<bool> float tests

cc #141726

Unify the From<bool> tests from f16.rs and f128.rs into a single float_test! in mod.rs.

Author: augustocesarperin

library/coretests/tests/floats/f128.rs

@@ -20,8 +20,6 @@ const TOL_PRECISE: f128 = 1e-28;
 
 #[test]
 fn test_from() {
-    assert_biteq!(f128::from(false), 0.0);
-    assert_biteq!(f128::from(true), 1.0);
     assert_biteq!(f128::from(u8::MIN), 0.0);
     assert_biteq!(f128::from(42_u8), 42.0);
     assert_biteq!(f128::from(u8::MAX), 255.0);

library/coretests/tests/floats/f16.rs

@@ -24,8 +24,6 @@ const TOL_P4: f16 = 10.0;
 
 #[test]
 fn test_from() {
-    assert_biteq!(f16::from(false), 0.0);
-    assert_biteq!(f16::from(true), 1.0);
     assert_biteq!(f16::from(u8::MIN), 0.0);
     assert_biteq!(f16::from(42_u8), 42.0);
     assert_biteq!(f16::from(u8::MAX), 255.0);

library/coretests/tests/floats/mod.rs

@@ -1582,3 +1582,15 @@ float_test! {
         assert_biteq!((flt(-3.2)).mul_add(2.4, neg_inf), neg_inf);
     }
 }
+
+float_test! {
+    name: from_bool,
+    attrs: {
+        f16: #[cfg(any(miri, target_has_reliable_f16))],
+        f128: #[cfg(any(miri, target_has_reliable_f128))],
+    },
+    test<Float> {
+        assert_biteq!(Float::from(false), Float::ZERO);
+        assert_biteq!(Float::from(true), Float::ONE);
+    }
+}