1 files changed, 37 insertions, 0 deletions
diff --git a/docs/nspr/reference/pr_atomicadd.rst b/docs/nspr/reference/pr_atomicadd.rst
new file mode 100644
index 0000000000..3f2afeece0
--- /dev/null
+++ b/docs/nspr/reference/pr_atomicadd.rst
@@ -0,0 +1,37 @@
+PR_AtomicAdd
+============
+
+
+Syntax
+------
+
+.. code::
+
+   #include <pratom.h>
+
+   PRInt32 PR_AtomicAdd(
+     PRInt32 *ptr,
+     PRInt32 val);
+
+
+Parameter
+~~~~~~~~~
+
+The function has the following parameters:
+
+``ptr``
+   A pointer to the value to increment.
+``val``
+   A value to be added.
+
+
+Returns
+~~~~~~~
+
+The returned value is the result of the addition.
+
+
+Description
+-----------
+
+Atomically add a 32 bit value.