clarify logic when name mangling is not found
@@ -661,7 +661,7 @@ ENDIF()
# Note: the default scheme is lower case - one underscore
# ---------------------------------------------------------------
-IF(BLAS_ENABLE OR LAPACK_ENABLE AND NOT F77SCHEME_FOUND)
+IF((BLAS_ENABLE OR LAPACK_ENABLE) AND NOT F77SCHEME_FOUND)
# Specify the case for the Fortran name-mangling scheme
SHOW_VARIABLE(SUNDIALS_F77_FUNC_CASE STRING
