1 files changed, 50 insertions, 0 deletions
diff --git a/docs/nspr/reference/pr_strtod.rst b/docs/nspr/reference/pr_strtod.rst
new file mode 100644
index 0000000000..af870ce03b
--- /dev/null
+++ b/docs/nspr/reference/pr_strtod.rst
@@ -0,0 +1,50 @@
+PR_strtod
+=========
+
+Converts the prefix of a decimal string to the nearest double-precision
+floating point number.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prdtoa.h>
+
+   PRFloat64 PR_strtod(const char *s00, char **se);
+
+
+Parameters
+~~~~~~~~~~
+
+The function has these parameters:
+
+``s00``
+   The input string to be scanned.
+``se``
+   A pointer that, if not ``NULL``, will be assigned the address of the
+   last character scanned in the input string.
+
+
+Returns
+~~~~~~~
+
+The result of the conversion is a ``PRFloat64`` value equivalent to the
+input string. If the parameter ``se`` is not ``NULL`` the location it
+references is also set.
+
+
+Description
+-----------
+
+:ref:`PR_strtod` converts the prefix of the input decimal string pointed to
+by ``s00`` to a nearest double-precision floating point number. Ties are
+broken by the IEEE round-even rule. The string is scanned up to the
+first unrecognized character. If the value of ``se`` is not
+(``char **``) ``NULL``, :ref:`PR_strtod` stores a pointer to the character
+terminating the scan in ``*se``. If the answer would overflow, a
+properly signed ``HUGE_VAL`` (infinity) is returned. If the answer would
+underflow, a properly signed 0 is returned. In both cases,
+``PR_GetError()`` returns the error code ``PR_RANGE_ERROR``. If no
+number can be formed, ``se`` is set to ``s00``, and 0 is returned.