fix some a/an typos

Signed-off-by: Lou Logan <lou@lrcd.com>

3 files changed, 4 insertions, 4 deletions

diff --git a/libavutil/avstring.h b/libavutil/avstring.h
index 15b04babef..dd2876990f 100644
--- a/libavutil/avstring.h
+++ b/libavutil/avstring.h
@@ -156,7 +156,7 @@ static inline size_t av_strnlen(const char *s, size_t len)
 char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
 
 /**
- * Convert a number to a av_malloced string.
+ * Convert a number to an av_malloced string.
  */
 char *av_d2str(double d);
 
diff --git a/libavutil/cpu.h b/libavutil/cpu.h
index cc4e30c4cd..4bff16714a 100644
--- a/libavutil/cpu.h
+++ b/libavutil/cpu.h
@@ -70,7 +70,7 @@
 /**
  * Return the flags which specify extensions supported by the CPU.
  * The returned value is affected by av_force_cpu_flags() if that was used
- * before. So av_get_cpu_flags() can easily be used in a application to
+ * before. So av_get_cpu_flags() can easily be used in an application to
  * detect the enabled cpu flags.
  */
 int av_get_cpu_flags(void);
diff --git a/libavutil/tree.h b/libavutil/tree.h
index e1aefaa9f6..9a9e11b92c 100644
--- a/libavutil/tree.h
+++ b/libavutil/tree.h
@@ -120,8 +120,8 @@ void av_tree_destroy(struct AVTreeNode *t);
 /**
  * Apply enu(opaque, &elem) to all the elements in the tree in a given range.
  *
- * @param cmp a comparison function that returns < 0 for a element below the
- *            range, > 0 for a element above the range and == 0 for a
+ * @param cmp a comparison function that returns < 0 for an element below the
+ *            range, > 0 for an element above the range and == 0 for an
  *            element inside the range
  *
  * @note The cmp function should use the same ordering used to construct the