Remove a template argument from batch_gemm

theano/tensor/blas.py

@@ -2054,9 +2054,10 @@ class BatchedDot(Op):
 
     def c_support_code(self):
         batch_gemm_defn = """
-        template<typename dtype, typename function>
-        bool batch_gemm(function gemm, int type_size,
-                        PyArrayObject* xs, PyArrayObject* ys, PyArrayObject* zs) {
+        template<typename dtype>
+        bool batch_gemm(void (*gemm)(char*, char*, const int*, const int*, const int*, const dtype*, const dtype*, const int*, const dtype*, const int*, const dtype*, dtype*, const int*),
+                        int type_size, PyArrayObject* xs, PyArrayObject* ys,
+                        PyArrayObject* zs) {
             npy_intp *Nx = PyArray_DIMS(xs), *Sx = PyArray_STRIDES(xs);
             npy_intp *Ny = PyArray_DIMS(ys), *Sy = PyArray_STRIDES(ys);
             npy_intp *Nz = PyArray_DIMS(zs), *Sz = PyArray_STRIDES(zs);
@@ -2323,7 +2324,7 @@ class BatchedDot(Op):
 
     def c_code_cache_version(self):
         from theano.tensor.blas_headers import blas_header_version
-        return (3, blas_header_version())
+        return (4, blas_header_version())
 
     def grad(self, inp, grads):
         x, y = inp