+DSA_SIG_get0() returns internal pointers to the B<r> and B<s> values contained
+in B<sig>.
+
+The B<r> and B<s> values can be set by calling DSA_SIG_set0() and passing the
+new values for B<r> and B<s> as parameters to the function. Calling this
+function transfers the memory management of the values to the DSA_SIG object,
+and therefore the values that have been passed in should not be freed directly
+after this function has been called.
+