Change name of RegisterLoopForStructType to RegisterLoopByDescr

1 files changed, 5 insertions, 3 deletions

diff --git a/doc/source/reference/c-api.ufunc.rst b/doc/source/reference/c-api.ufunc.rst
index 1dfc0c6c9..a01f32355 100644
--- a/doc/source/reference/c-api.ufunc.rst
+++ b/doc/source/reference/c-api.ufunc.rst
@@ -140,13 +140,15 @@ Functions
     in as *arg_types* which must be a pointer to memory at least as
     large as ufunc->nargs.
 
-.. cfunction:: int PyUFunc_RegisterLoopForStructType(PyUFuncObject* ufunc,
+.. cfunction:: int PyUFunc_RegisterLoopByDescr(PyUFuncObject* ufunc,
    PyArray_Descr* userdtype, PyUFuncGenericFunction function,
    PyArray_Descr** arg_dtypes, void* data)
 
    This function behaves like PyUFunc_RegisterLoopForType above, except
-   that it allows the user to register a 1-d loop for structured array
-   data-dtypes instead of scalar data-types.
+   that it allows the user to register a 1-d loop using PyArray_Descr
+   objects instead of dtype type num values. This allows a 1-d loop to be
+   registered for structured array data-dtypes and custom data-types
+   instead of scalar data-types.
 
 .. cfunction:: int PyUFunc_ReplaceLoopBySignature(PyUFuncObject* ufunc,
    PyUFuncGenericFunction newfunc, int* signature,