Consolidate neg_infinity tests

Author: rocurley

library/coretests/tests/floats/f128.rs

@@ -40,18 +40,6 @@ const NAN_MASK2: u128 = 0x00005555555555555555555555555555;
 // FIXME(f16_f128,miri): many of these have to be disabled since miri does not yet support
 // the intrinsics.
 
-#[test]
-fn test_neg_infinity() {
-    let neg_inf: f128 = f128::NEG_INFINITY;
-    assert!(neg_inf.is_infinite());
-    assert!(!neg_inf.is_finite());
-    assert!(!neg_inf.is_sign_positive());
-    assert!(neg_inf.is_sign_negative());
-    assert!(!neg_inf.is_nan());
-    assert!(!neg_inf.is_normal());
-    assert_eq!(Fp::Infinite, neg_inf.classify());
-}
-
 #[test]
 fn test_zero() {
     let zero: f128 = 0.0f128;

library/coretests/tests/floats/f16.rs

@@ -46,18 +46,6 @@ const NAN_MASK2: u16 = 0x0155;
 // FIXME(f16_f128,miri): many of these have to be disabled since miri does not yet support
 // the intrinsics.
 
-#[test]
-fn test_neg_infinity() {
-    let neg_inf: f16 = f16::NEG_INFINITY;
-    assert!(neg_inf.is_infinite());
-    assert!(!neg_inf.is_finite());
-    assert!(!neg_inf.is_sign_positive());
-    assert!(neg_inf.is_sign_negative());
-    assert!(!neg_inf.is_nan());
-    assert!(!neg_inf.is_normal());
-    assert_eq!(Fp::Infinite, neg_inf.classify());
-}
-
 #[test]
 fn test_zero() {
     let zero: f16 = 0.0f16;

library/coretests/tests/floats/f32.rs

@@ -30,18 +30,6 @@ const NAN_MASK2: u32 = 0x0055_5555;
 /// They serve as a way to get an idea of the real precision of floating point operations on different platforms.
 const APPROX_DELTA: f32 = if cfg!(miri) { 1e-4 } else { 1e-6 };
 
-#[test]
-fn test_neg_infinity() {
-    let neg_inf: f32 = f32::NEG_INFINITY;
-    assert!(neg_inf.is_infinite());
-    assert!(!neg_inf.is_finite());
-    assert!(!neg_inf.is_sign_positive());
-    assert!(neg_inf.is_sign_negative());
-    assert!(!neg_inf.is_nan());
-    assert!(!neg_inf.is_normal());
-    assert_eq!(Fp::Infinite, neg_inf.classify());
-}
-
 #[test]
 fn test_zero() {
     let zero: f32 = 0.0f32;

library/coretests/tests/floats/f64.rs

@@ -25,18 +25,6 @@ const NAN_MASK1: u64 = 0x000a_aaaa_aaaa_aaaa;
 /// Second pattern over the mantissa
 const NAN_MASK2: u64 = 0x0005_5555_5555_5555;
 
-#[test]
-fn test_neg_infinity() {
-    let neg_inf: f64 = f64::NEG_INFINITY;
-    assert!(neg_inf.is_infinite());
-    assert!(!neg_inf.is_finite());
-    assert!(!neg_inf.is_sign_positive());
-    assert!(neg_inf.is_sign_negative());
-    assert!(!neg_inf.is_nan());
-    assert!(!neg_inf.is_normal());
-    assert_eq!(Fp::Infinite, neg_inf.classify());
-}
-
 #[test]
 fn test_zero() {
     let zero: f64 = 0.0f64;

library/coretests/tests/floats/mod.rs

@@ -304,6 +304,24 @@ float_test! {
     }
 }
 
+float_test! {
+    name: neg_infinity,
+    attrs: {
+        f16: #[cfg(any(miri, target_has_reliable_f16))],
+        f128: #[cfg(any(miri, target_has_reliable_f128))],
+    },
+    test<Float> {
+        let neg_inf: Float = Float::NEG_INFINITY;
+        assert!(neg_inf.is_infinite());
+        assert!(!neg_inf.is_finite());
+        assert!(!neg_inf.is_sign_positive());
+        assert!(neg_inf.is_sign_negative());
+        assert!(!neg_inf.is_nan());
+        assert!(!neg_inf.is_normal());
+        assert!(matches!(neg_inf.classify(), Fp::Infinite));
+    }
+}
+
 float_test! {
     name: min,
     attrs: {