Fix some typos

4 files changed, 4 insertions, 4 deletions

diff --git a/src/libcore/iter/mod.rs b/src/libcore/iter/mod.rs
index 79e6b11beac..22b997a768e 100644
--- a/src/libcore/iter/mod.rs
+++ b/src/libcore/iter/mod.rs
@@ -1035,7 +1035,7 @@ unsafe impl<A, B> TrustedLen for Zip<A, B>
 /// Now consider this twist where we add a call to `rev`. This version will
 /// print `('c', 1), ('b', 2), ('a', 3)`. Note that the letters are reversed,
 /// but the values of the counter still go in order. This is because `map()` is
-/// still being called lazilly on each item, but we are popping items off the
+/// still being called lazily on each item, but we are popping items off the
 /// back of the vector now, instead of shifting them from the front.
 ///
 /// ```rust
diff --git a/src/libcore/iter/traits.rs b/src/libcore/iter/traits.rs
index ccfeb91aff1..19098f036ac 100644
--- a/src/libcore/iter/traits.rs
+++ b/src/libcore/iter/traits.rs
@@ -345,7 +345,7 @@ pub trait Extend<A> {
 /// In a similar fashion to the [`Iterator`] protocol, once a
 /// `DoubleEndedIterator` returns `None` from a `next_back()`, calling it again
 /// may or may not ever return `Some` again. `next()` and `next_back()` are
-/// interchangable for this purpose.
+/// interchangeable for this purpose.
 ///
 /// [`Iterator`]: trait.Iterator.html
 ///
diff --git a/src/libcore/num/dec2flt/algorithm.rs b/src/libcore/num/dec2flt/algorithm.rs
index 42bc46c0c68..ccf3950c2ba 100644
--- a/src/libcore/num/dec2flt/algorithm.rs
+++ b/src/libcore/num/dec2flt/algorithm.rs
@@ -336,7 +336,7 @@ pub fn algorithm_m<T: RawFloat>(f: &Big, e: i16) -> T {
     round_by_remainder(v, rem, q, z)
 }
 
-/// Skip over most AlgorithmM iterations by checking the bit length.
+/// Skip over most Algorithm M iterations by checking the bit length.
 fn quick_start<T: RawFloat>(u: &mut Big, v: &mut Big, k: &mut i16) {
     // The bit length is an estimate of the base two logarithm, and log(u / v) = log(u) - log(v).
     // The estimate is off by at most 1, but always an under-estimate, so the error on log(u)
diff --git a/src/libcore/tests/num/mod.rs b/src/libcore/tests/num/mod.rs
index 046b81e19f7..400d53ce51a 100644
--- a/src/libcore/tests/num/mod.rs
+++ b/src/libcore/tests/num/mod.rs
@@ -566,7 +566,7 @@ assume_usize_width! {
     );
 }
 
-/// Conversinos where neither the min nor the max of $source can be represented by
+/// Conversions where neither the min nor the max of $source can be represented by
 /// $target, but max/min of the target can be represented by the source.
 macro_rules! test_impl_try_from_signed_to_unsigned_err {
     ($fn_name:ident, $source:ty, $target:ty) => {