move float tests into their own dir

3 files changed, 248 insertions, 0 deletions

diff --git a/tests/ui/float/classify-runtime-const.rs b/tests/ui/float/classify-runtime-const.rs
new file mode 100644
index 00000000000..6e5097f7f2b
--- /dev/null
+++ b/tests/ui/float/classify-runtime-const.rs
@@ -0,0 +1,76 @@
+//@ compile-flags: -Zmir-opt-level=0 -Znext-solver
+//@ known-bug: #110395
+// FIXME(effects) run-pass
+
+#![feature(const_float_classify)]
+#![feature(const_trait_impl, effects)]
+#![allow(incomplete_features)]
+
+// Don't promote
+const fn nop<T>(x: T) -> T { x }
+
+impl const PartialEq<NonDet> for bool {
+    fn eq(&self, _: &NonDet) -> bool {
+        true
+    }
+}
+
+macro_rules! const_assert {
+    ($a:expr, $b:expr) => {
+        {
+            const _: () = assert!($a == $b);
+            assert!(nop($a) == nop($b));
+        }
+    };
+}
+
+macro_rules! suite {
+    ( $( $tt:tt )* ) => {
+        fn f32() {
+            suite_inner!(f32 $($tt)*);
+        }
+
+        fn f64() {
+            suite_inner!(f64 $($tt)*);
+        }
+    }
+
+}
+
+macro_rules! suite_inner {
+    (
+        $ty:ident [$( $fn:ident ),*]
+        $val:expr => [$($out:ident),*]
+
+        $( $tail:tt )*
+    ) => {
+        $( const_assert!($ty::$fn($val), $out); )*
+        suite_inner!($ty [$($fn),*] $($tail)*)
+    };
+
+    ( $ty:ident [$( $fn:ident ),*]) => {};
+}
+
+#[derive(Debug)]
+struct NonDet;
+
+// The result of the `is_sign` methods are not checked for correctness, since LLVM does not
+// guarantee anything about the signedness of NaNs. See
+// https://github.com/rust-lang/rust/issues/55131.
+
+suite! {
+                   [is_nan, is_infinite, is_finite, is_normal, is_sign_positive, is_sign_negative]
+     -0.0 / 0.0 => [  true,       false,     false,     false,           NonDet,           NonDet]
+      0.0 / 0.0 => [  true,       false,     false,     false,           NonDet,           NonDet]
+            1.0 => [ false,       false,      true,      true,             true,            false]
+           -1.0 => [ false,       false,      true,      true,            false,             true]
+            0.0 => [ false,       false,      true,     false,             true,            false]
+           -0.0 => [ false,       false,      true,     false,            false,             true]
+      1.0 / 0.0 => [ false,        true,     false,     false,             true,            false]
+     -1.0 / 0.0 => [ false,        true,     false,     false,            false,             true]
+}
+
+fn main() {
+    f32();
+    f64();
+}
diff --git a/tests/ui/float/classify-runtime-const.stderr b/tests/ui/float/classify-runtime-const.stderr
new file mode 100644
index 00000000000..a35de8ad0ea
--- /dev/null
+++ b/tests/ui/float/classify-runtime-const.stderr
@@ -0,0 +1,11 @@
+error: const `impl` for trait `PartialEq` which is not marked with `#[const_trait]`
+  --> $DIR/const-float-classify.rs:12:12
+   |
+LL | impl const PartialEq<NonDet> for bool {
+   |            ^^^^^^^^^^^^^^^^^
+   |
+   = note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
+   = note: adding a non-const method body in the future would be a breaking change
+
+error: aborting due to 1 previous error
+
diff --git a/tests/ui/float/conv-bits-runtime-const.rs b/tests/ui/float/conv-bits-runtime-const.rs
new file mode 100644
index 00000000000..869498d1076
--- /dev/null
+++ b/tests/ui/float/conv-bits-runtime-const.rs
@@ -0,0 +1,161 @@
+//@ compile-flags: -Zmir-opt-level=0
+//@ run-pass
+
+#![feature(const_float_classify)]
+#![feature(f16, f16_const)]
+#![feature(f128, f128_const)]
+#![allow(unused_macro_rules)]
+// Don't promote
+const fn nop<T>(x: T) -> T { x }
+
+macro_rules! const_assert {
+    ($a:expr) => {
+        {
+            const _: () = assert!($a);
+            assert!(nop($a));
+        }
+    };
+    ($a:expr, $b:expr) => {
+        {
+            const _: () = assert!($a == $b);
+            assert_eq!(nop($a), nop($b));
+        }
+    };
+}
+
+fn has_broken_floats() -> bool {
+    // i586 targets are broken due to <https://github.com/rust-lang/rust/issues/114479>.
+    std::env::var("TARGET").is_ok_and(|v| v.contains("i586"))
+}
+
+#[cfg(target_arch = "x86_64")]
+fn f16(){
+    const_assert!((1f16).to_bits(), 0x3c00);
+    const_assert!(u16::from_be_bytes(1f16.to_be_bytes()), 0x3c00);
+    const_assert!((12.5f16).to_bits(), 0x4a40);
+    const_assert!(u16::from_le_bytes(12.5f16.to_le_bytes()), 0x4a40);
+    const_assert!((1337f16).to_bits(), 0x6539);
+    const_assert!(u16::from_ne_bytes(1337f16.to_ne_bytes()), 0x6539);
+    const_assert!((-14.25f16).to_bits(), 0xcb20);
+    const_assert!(f16::from_bits(0x3c00), 1.0);
+    const_assert!(f16::from_be_bytes(0x3c00u16.to_be_bytes()), 1.0);
+    const_assert!(f16::from_bits(0x4a40), 12.5);
+    const_assert!(f16::from_le_bytes(0x4a40u16.to_le_bytes()), 12.5);
+    const_assert!(f16::from_bits(0x5be0), 252.0);
+    const_assert!(f16::from_ne_bytes(0x5be0u16.to_ne_bytes()), 252.0);
+    const_assert!(f16::from_bits(0xcb20), -14.25);
+
+    // Check that NaNs roundtrip their bits regardless of signalingness
+    // 0xA is 0b1010; 0x5 is 0b0101 -- so these two together clobbers all the mantissa bits
+    // NOTE: These names assume `f{BITS}::NAN` is a quiet NAN and IEEE754-2008's NaN rules apply!
+    const QUIET_NAN: u16 = f16::NAN.to_bits() ^ 0x0155;
+    const SIGNALING_NAN: u16 = f16::NAN.to_bits() ^ 0x02AA;
+
+    const_assert!(f16::from_bits(QUIET_NAN).is_nan());
+    const_assert!(f16::from_bits(SIGNALING_NAN).is_nan());
+    const_assert!(f16::from_bits(QUIET_NAN).to_bits(), QUIET_NAN);
+    if !has_broken_floats() {
+        const_assert!(f16::from_bits(SIGNALING_NAN).to_bits(), SIGNALING_NAN);
+    }
+}
+
+fn f32() {
+    const_assert!((1f32).to_bits(), 0x3f800000);
+    const_assert!(u32::from_be_bytes(1f32.to_be_bytes()), 0x3f800000);
+    const_assert!((12.5f32).to_bits(), 0x41480000);
+    const_assert!(u32::from_le_bytes(12.5f32.to_le_bytes()), 0x41480000);
+    const_assert!((1337f32).to_bits(), 0x44a72000);
+    const_assert!(u32::from_ne_bytes(1337f32.to_ne_bytes()), 0x44a72000);
+    const_assert!((-14.25f32).to_bits(), 0xc1640000);
+    const_assert!(f32::from_bits(0x3f800000), 1.0);
+    const_assert!(f32::from_be_bytes(0x3f800000u32.to_be_bytes()), 1.0);
+    const_assert!(f32::from_bits(0x41480000), 12.5);
+    const_assert!(f32::from_le_bytes(0x41480000u32.to_le_bytes()), 12.5);
+    const_assert!(f32::from_bits(0x44a72000), 1337.0);
+    const_assert!(f32::from_ne_bytes(0x44a72000u32.to_ne_bytes()), 1337.0);
+    const_assert!(f32::from_bits(0xc1640000), -14.25);
+
+    // Check that NaNs roundtrip their bits regardless of signalingness
+    // 0xA is 0b1010; 0x5 is 0b0101 -- so these two together clobbers all the mantissa bits
+    // NOTE: These names assume `f{BITS}::NAN` is a quiet NAN and IEEE754-2008's NaN rules apply!
+    const QUIET_NAN: u32 = f32::NAN.to_bits() ^ 0x002A_AAAA;
+    const SIGNALING_NAN: u32 = f32::NAN.to_bits() ^ 0x0055_5555;
+
+    const_assert!(f32::from_bits(QUIET_NAN).is_nan());
+    const_assert!(f32::from_bits(SIGNALING_NAN).is_nan());
+    const_assert!(f32::from_bits(QUIET_NAN).to_bits(), QUIET_NAN);
+    if !has_broken_floats() {
+        const_assert!(f32::from_bits(SIGNALING_NAN).to_bits(), SIGNALING_NAN);
+    }
+}
+
+fn f64() {
+    const_assert!((1f64).to_bits(), 0x3ff0000000000000);
+    const_assert!(u64::from_be_bytes(1f64.to_be_bytes()), 0x3ff0000000000000);
+    const_assert!((12.5f64).to_bits(), 0x4029000000000000);
+    const_assert!(u64::from_le_bytes(12.5f64.to_le_bytes()), 0x4029000000000000);
+    const_assert!((1337f64).to_bits(), 0x4094e40000000000);
+    const_assert!(u64::from_ne_bytes(1337f64.to_ne_bytes()), 0x4094e40000000000);
+    const_assert!((-14.25f64).to_bits(), 0xc02c800000000000);
+    const_assert!(f64::from_bits(0x3ff0000000000000), 1.0);
+    const_assert!(f64::from_be_bytes(0x3ff0000000000000u64.to_be_bytes()), 1.0);
+    const_assert!(f64::from_bits(0x4029000000000000), 12.5);
+    const_assert!(f64::from_le_bytes(0x4029000000000000u64.to_le_bytes()), 12.5);
+    const_assert!(f64::from_bits(0x4094e40000000000), 1337.0);
+    const_assert!(f64::from_ne_bytes(0x4094e40000000000u64.to_ne_bytes()), 1337.0);
+    const_assert!(f64::from_bits(0xc02c800000000000), -14.25);
+
+    // Check that NaNs roundtrip their bits regardless of signalingness
+    // 0xA is 0b1010; 0x5 is 0b0101 -- so these two together clobbers all the mantissa bits
+    // NOTE: These names assume `f{BITS}::NAN` is a quiet NAN and IEEE754-2008's NaN rules apply!
+    const QUIET_NAN: u64 = f64::NAN.to_bits() ^ 0x0005_5555_5555_5555;
+    const SIGNALING_NAN: u64 = f64::NAN.to_bits() ^ 0x000A_AAAA_AAAA_AAAA;
+
+    const_assert!(f64::from_bits(QUIET_NAN).is_nan());
+    const_assert!(f64::from_bits(SIGNALING_NAN).is_nan());
+    const_assert!(f64::from_bits(QUIET_NAN).to_bits(), QUIET_NAN);
+    if !has_broken_floats() {
+        const_assert!(f64::from_bits(SIGNALING_NAN).to_bits(), SIGNALING_NAN);
+    }
+}
+
+#[cfg(target_arch = "x86_64")]
+fn f128() {
+    const_assert!((1f128).to_bits(), 0x3fff0000000000000000000000000000);
+    const_assert!(u128::from_be_bytes(1f128.to_be_bytes()), 0x3fff0000000000000000000000000000);
+    const_assert!((12.5f128).to_bits(), 0x40029000000000000000000000000000);
+    const_assert!(u128::from_le_bytes(12.5f128.to_le_bytes()), 0x40029000000000000000000000000000);
+    const_assert!((1337f128).to_bits(), 0x40094e40000000000000000000000000);
+    const_assert!(u128::from_ne_bytes(1337f128.to_ne_bytes()), 0x40094e40000000000000000000000000);
+    const_assert!((-14.25f128).to_bits(), 0xc002c800000000000000000000000000);
+    const_assert!(f128::from_bits(0x3fff0000000000000000000000000000), 1.0);
+    const_assert!(f128::from_be_bytes(0x3fff0000000000000000000000000000u128.to_be_bytes()), 1.0);
+    const_assert!(f128::from_bits(0x40029000000000000000000000000000), 12.5);
+    const_assert!(f128::from_le_bytes(0x40029000000000000000000000000000u128.to_le_bytes()), 12.5);
+    const_assert!(f128::from_bits(0x40094e40000000000000000000000000), 1337.0);
+    assert_eq!(f128::from_ne_bytes(0x40094e40000000000000000000000000u128.to_ne_bytes()), 1337.0);
+    const_assert!(f128::from_bits(0xc002c800000000000000000000000000), -14.25);
+
+    // Check that NaNs roundtrip their bits regardless of signalingness
+    // 0xA is 0b1010; 0x5 is 0b0101 -- so these two together clobbers all the mantissa bits
+    // NOTE: These names assume `f{BITS}::NAN` is a quiet NAN and IEEE754-2008's NaN rules apply!
+    const QUIET_NAN: u128 = f128::NAN.to_bits() | 0x0000_AAAA_AAAA_AAAA_AAAA_AAAA_AAAA_AAAA;
+    const SIGNALING_NAN: u128 = f128::NAN.to_bits() ^ 0x0000_5555_5555_5555_5555_5555_5555_5555;
+
+    const_assert!(f128::from_bits(QUIET_NAN).is_nan());
+    const_assert!(f128::from_bits(SIGNALING_NAN).is_nan());
+    const_assert!(f128::from_bits(QUIET_NAN).to_bits(), QUIET_NAN);
+    if !has_broken_floats() {
+        const_assert!(f128::from_bits(SIGNALING_NAN).to_bits(), SIGNALING_NAN);
+    }
+}
+
+fn main() {
+    #[cfg(target_arch = "x86_64")]
+    {
+        f16();
+        f128();
+    }
+    f32();
+    f64();
+}