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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/issues/issue-50811.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/issues/issue-50811.rs')
-rw-r--r--src/test/ui/issues/issue-50811.rs55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-50811.rs b/src/test/ui/issues/issue-50811.rs
new file mode 100644
index 000000000..683c85604
--- /dev/null
+++ b/src/test/ui/issues/issue-50811.rs
@@ -0,0 +1,55 @@
+// run-pass
+#![feature(test)]
+
+extern crate test;
+
+use std::mem::size_of;
+use test::black_box;
+
+// Ensure the const-eval result and runtime result of float comparison are equivalent.
+
+macro_rules! compare {
+ ($op:tt) => {
+ compare!(
+ [f64::NEG_INFINITY, -f64::MAX, -1.0, -0.0, 0.0, 1.0, f64::MAX, f64::INFINITY, f64::NAN],
+ $op
+ );
+ };
+ ([$($lhs:expr),+], $op:tt) => {
+ $(compare!(
+ $lhs,
+ $op,
+ [f64::NEG_INFINITY, -f64::MAX, -1.0, -0.0, 0.0, 1.0, f64::MAX, f64::INFINITY, f64::NAN]
+ );)+
+ };
+ ($lhs:expr, $op:tt, [$($rhs:expr),+]) => {
+ $({
+ // Wrap the check in its own function to reduce time needed to borrowck.
+ fn check() {
+ static CONST_EVAL: bool = $lhs $op $rhs;
+ let runtime_eval = black_box($lhs) $op black_box($rhs);
+ assert_eq!(CONST_EVAL, runtime_eval, stringify!($lhs $op $rhs));
+ assert_eq!(
+ size_of::<[u8; ($lhs $op $rhs) as usize]>(),
+ runtime_eval as usize,
+ stringify!($lhs $op $rhs (forced const eval))
+ );
+ }
+ check();
+ })+
+ };
+}
+
+fn main() {
+ assert_eq!(0.0/0.0 < 0.0/0.0, false);
+ assert_eq!(0.0/0.0 > 0.0/0.0, false);
+ assert_eq!(f64::NAN < f64::NAN, false);
+ assert_eq!(f64::NAN > f64::NAN, false);
+
+ compare!(==);
+ compare!(!=);
+ compare!(<);
+ compare!(<=);
+ compare!(>);
+ compare!(>=);
+}