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-rw-r--r--src/liballoc/allocator.rs6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/liballoc/allocator.rs b/src/liballoc/allocator.rs
index 5a9cd82b9d1..3a2022ad429 100644
--- a/src/liballoc/allocator.rs
+++ b/src/liballoc/allocator.rs
@@ -70,7 +70,7 @@ impl Layout {
     ///
     /// * `align` must be a power of two,
     ///
-    /// * `align` must not exceed 2^31 (i.e. `1 << 31`),
+    /// * `align` must not exceed 2<sup>31</sup> (i.e. `1 << 31`),
     ///
     /// * `size`, when rounded up to the nearest multiple of `align`,
     ///    must not overflow (i.e. the rounded value must be less than
@@ -113,7 +113,7 @@ impl Layout {
     /// # Safety
     ///
     /// This function is unsafe as it does not verify that `align` is
-    /// a power-of-two that is also less than or equal to 2^31, nor
+    /// a power-of-two that is also less than or equal to 2<sup>31</sup>, nor
     /// that `size` aligned to `align` fits within the address space
     /// (i.e. the `Layout::from_size_align` preconditions).
     #[inline]
@@ -227,7 +227,7 @@ impl Layout {
         };
 
         // We can assume that `self.align` is a power-of-two that does
-        // not exceed 2^31. Furthermore, `alloc_size` has already been
+        // not exceed 2<sup>31</sup>. Furthermore, `alloc_size` has already been
         // rounded up to a multiple of `self.align`; therefore, the
         // call to `Layout::from_size_align` below should never panic.
         Some((Layout::from_size_align(alloc_size, self.align).unwrap(), padded_size))