Auto merge of #18317 - lnicola:sync-from-rust, r=Veykril

minor: sync from downstream

1 files changed, 8 insertions, 0 deletions

diff --git a/compiler/rustc_const_eval/src/interpret/eval_context.rs b/compiler/rustc_const_eval/src/interpret/eval_context.rs
index 5165f95afd5..02dd7821ef6 100644
--- a/compiler/rustc_const_eval/src/interpret/eval_context.rs
+++ b/compiler/rustc_const_eval/src/interpret/eval_context.rs
@@ -599,6 +599,14 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
     pub fn generate_stacktrace(&self) -> Vec<FrameInfo<'tcx>> {
         Frame::generate_stacktrace_from_stack(self.stack())
     }
+
+    pub fn adjust_nan<F1, F2>(&self, f: F2, inputs: &[F1]) -> F2
+    where
+        F1: rustc_apfloat::Float + rustc_apfloat::FloatConvert<F2>,
+        F2: rustc_apfloat::Float,
+    {
+        if f.is_nan() { M::generate_nan(self, inputs) } else { f }
+    }
 }
 
 #[doc(hidden)]