Consolidate abs tests

This clobbers the existing generic abs test, but it covers strictly
more, so that seems fine.

Author: rocurley

library/coretests/tests/floats/f128.rs

@@ -39,19 +39,6 @@ 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]
-#[cfg(any(miri, target_has_reliable_f128_math))]
-fn test_abs() {
-    assert_biteq!(f128::INFINITY.abs(), f128::INFINITY);
-    assert_biteq!(1f128.abs(), 1f128);
-    assert_biteq!(0f128.abs(), 0f128);
-    assert_biteq!((-0f128).abs(), 0f128);
-    assert_biteq!((-1f128).abs(), 1f128);
-    assert_biteq!(f128::NEG_INFINITY.abs(), f128::INFINITY);
-    assert_biteq!((1f128 / f128::NEG_INFINITY).abs(), 0f128);
-    assert!(f128::NAN.abs().is_nan());
-}
-
 #[test]
 fn test_is_sign_positive() {
     assert!(f128::INFINITY.is_sign_positive());

library/coretests/tests/floats/f16.rs

@@ -45,19 +45,6 @@ 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]
-#[cfg(any(miri, target_has_reliable_f16_math))]
-fn test_abs() {
-    assert_biteq!(f16::INFINITY.abs(), f16::INFINITY);
-    assert_biteq!(1f16.abs(), 1f16);
-    assert_biteq!(0f16.abs(), 0f16);
-    assert_biteq!((-0f16).abs(), 0f16);
-    assert_biteq!((-1f16).abs(), 1f16);
-    assert_biteq!(f16::NEG_INFINITY.abs(), f16::INFINITY);
-    assert_biteq!((1f16 / f16::NEG_INFINITY).abs(), 0f16);
-    assert!(f16::NAN.abs().is_nan());
-}
-
 #[test]
 fn test_is_sign_positive() {
     assert!(f16::INFINITY.is_sign_positive());

library/coretests/tests/floats/f32.rs

@@ -29,18 +29,6 @@ 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_abs() {
-    assert_biteq!(f32::INFINITY.abs(), f32::INFINITY);
-    assert_biteq!(1f32.abs(), 1f32);
-    assert_biteq!(0f32.abs(), 0f32);
-    assert_biteq!((-0f32).abs(), 0f32);
-    assert_biteq!((-1f32).abs(), 1f32);
-    assert_biteq!(f32::NEG_INFINITY.abs(), f32::INFINITY);
-    assert_biteq!((1f32 / f32::NEG_INFINITY).abs(), 0f32);
-    assert!(f32::NAN.abs().is_nan());
-}
-
 #[test]
 fn test_signum() {
     assert_biteq!(f32::INFINITY.signum(), 1f32);

library/coretests/tests/floats/f64.rs

@@ -24,18 +24,6 @@ const NAN_MASK1: u64 = 0x000a_aaaa_aaaa_aaaa;
 /// Second pattern over the mantissa
 const NAN_MASK2: u64 = 0x0005_5555_5555_5555;
 
-#[test]
-fn test_abs() {
-    assert_biteq!(f64::INFINITY.abs(), f64::INFINITY);
-    assert_biteq!(1f64.abs(), 1f64);
-    assert_biteq!(0f64.abs(), 0f64);
-    assert_biteq!((-0f64).abs(), 0f64);
-    assert_biteq!((-1f64).abs(), 1f64);
-    assert_biteq!(f64::NEG_INFINITY.abs(), f64::INFINITY);
-    assert_biteq!((1f64 / f64::NEG_INFINITY).abs(), 0f64);
-    assert!(f64::NAN.abs().is_nan());
-}
-
 #[test]
 fn test_signum() {
     assert_biteq!(f64::INFINITY.signum(), 1f64);

library/coretests/tests/floats/mod.rs

@@ -720,10 +720,16 @@ float_test! {
         f128: #[cfg(any(miri, target_has_reliable_f128_math))],
     },
     test<Float> {
-        assert_biteq!((-1.0 as Float).abs(), 1.0);
-        assert_biteq!((1.0 as Float).abs(), 1.0);
-        assert_biteq!(Float::NEG_INFINITY.abs(), Float::INFINITY);
+        let one: Float = 1.0;
+        let zero: Float = 0.0;
         assert_biteq!(Float::INFINITY.abs(), Float::INFINITY);
+        assert_biteq!(one.abs(), one);
+        assert_biteq!(zero.abs(), zero);
+        assert_biteq!((-zero).abs(), zero);
+        assert_biteq!((-one).abs(), one);
+        assert_biteq!(Float::NEG_INFINITY.abs(), Float::INFINITY);
+        assert_biteq!((one / Float::NEG_INFINITY).abs(), zero);
+        assert!(Float::NAN.abs().is_nan());
     }
 }