diff --git a/zluda_bindgen/src/main.rs b/zluda_bindgen/src/main.rs
index d5816e8..91f3dc2 100644
--- a/zluda_bindgen/src/main.rs
+++ b/zluda_bindgen/src/main.rs
@@ -35,7 +35,7 @@ fn main() {
     generate_cublaslt(&crate_root);
     generate_cufft(&crate_root);
     generate_cusparse(&crate_root);
-    generate_cudnn(&crate_root);
+    // generate_cudnn(&crate_root);
 }
 
 fn generate_process_address_table(crate_root: &PathBuf, mut cuda_fns: Vec<Ident>) {
@@ -151,6 +151,7 @@ fn generate_cufft(crate_root: &PathBuf) {
         .allowlist_function("^cufft.*")
         .allowlist_var("^CUFFT_.*")
         .must_use_type("cufftResult_t")
+        .constified_enum("cufftResult_t")
         .allowlist_recursively(false)
         .clang_args(["-I/usr/local/cuda/include"])
         .generate()
@@ -163,7 +164,15 @@ fn generate_cufft(crate_root: &PathBuf) {
         &["..", "cuda_macros", "src", "cufft.rs"],
         &module,
     );
+    let convert_options = ConvertIntoRustResultOptions {
+        type_: "cufftResult",
+        underlying_type: "cufftResult_t",
+        new_error_type: "cufftError_t",
+        error_prefix: ("CUFFT_", "ERROR_"),
+        success: ("CUFFT_SUCCESS", "SUCCESS"),
+    };
     generate_types_library(
+        Some(convert_options),
         Some(LibraryOverride::CuFft),
         &crate_root,
         &["..", "cuda_types", "src", "cufft.rs"],
@@ -206,6 +215,7 @@ fn generate_cusparse(crate_root: &PathBuf) {
         .allowlist_function("^cusparse.*")
         .allowlist_var("^CUSPARSE_.*")
         .must_use_type("cusparseStatus_t")
+        .constified_enum("cusparseStatus_t")
         .allowlist_recursively(false)
         .clang_args(["-I/usr/local/cuda/include"])
         .generate()
@@ -218,7 +228,15 @@ fn generate_cusparse(crate_root: &PathBuf) {
         &["..", "cuda_macros", "src", "cusparse.rs"],
         &module,
     );
+    let convert_options = ConvertIntoRustResultOptions {
+        type_: "cusparseStatus_t",
+        underlying_type: "cusparseStatus_t",
+        new_error_type: "cusparseError_t",
+        error_prefix: ("CUSPARSE_STATUS_", "ERROR_"),
+        success: ("CUSPARSE_STATUS_SUCCESS", "SUCCESS"),
+    };
     generate_types_library(
+        Some(convert_options),
         None,
         &crate_root,
         &["..", "cuda_types", "src", "cusparse.rs"],
@@ -239,13 +257,21 @@ fn generate_cudnn(crate_root: &PathBuf) {
         .allowlist_function("^cudnn.*")
         .allowlist_var("^CUDNN_.*")
         .must_use_type("cudnnStatus_t")
+        .constified_enum("cudnnStatus_t")
         .allowlist_recursively(false)
         .clang_args(["-I/usr/local/cuda/include"])
         .generate()
         .unwrap()
         .to_string();
+    let convert_options = ConvertIntoRustResultOptions {
+        type_: "cudnnStatus_t",
+        underlying_type: "cudnnStatus_t",
+        new_error_type: "cudnnError_",
+        error_prefix: ("CUDNN_STATUS_", "ERROR_"),
+        success: ("CUDNN_STATUS_SUCCESS", "SUCCESS"),
+    };
     let cudnn9_module: syn::File = syn::parse_str(&cudnn9).unwrap();
-    let cudnn9_types = generate_types_library_impl(&cudnn9_module);
+    let cudnn9_types = generate_types_library_impl(Some(convert_options.clone()), &cudnn9_module);
     let mut current_dir = PathBuf::from(file!());
     current_dir.pop();
     let cudnn8 = new_builder()
@@ -263,7 +289,7 @@ fn generate_cudnn(crate_root: &PathBuf) {
         .unwrap()
         .to_string();
     let cudnn8_module: syn::File = syn::parse_str(&cudnn8).unwrap();
-    let cudnn8_types = generate_types_library_impl(&cudnn8_module);
+    let cudnn8_types = generate_types_library_impl(Some(convert_options), &cudnn8_module);
     merge_types(
         &crate_root,
         &["..", "cuda_types", "src", "cudnn.rs"],
@@ -624,6 +650,7 @@ fn generate_cublas(crate_root: &PathBuf) {
         .allowlist_function("^cublas.*")
         .allowlist_var("^CUBLAS_.*")
         .must_use_type("cublasStatus_t")
+        .constified_enum("cublasStatus_t")
         .allowlist_recursively(false)
         .clang_args(["-I/usr/local/cuda/include", "-x", "c++"])
         .generate()
@@ -636,7 +663,15 @@ fn generate_cublas(crate_root: &PathBuf) {
         &["..", "cuda_macros", "src", "cublas.rs"],
         &module,
     );
+    let convert_options = ConvertIntoRustResultOptions {
+        type_: "cublasStatus_t",
+        underlying_type: "cublasStatus_t",
+        new_error_type: "cublasError_t",
+        error_prefix: ("CUBLAS_STATUS_", "ERROR_"),
+        success: ("CUBLAS_STATUS_SUCCESS", "SUCCESS"),
+    };
     generate_types_library(
+        Some(convert_options),
         None,
         &crate_root,
         &["..", "cuda_types", "src", "cublas.rs"],
@@ -708,6 +743,7 @@ fn generate_cublaslt(crate_root: &PathBuf) {
         &module_blas,
     );
     generate_types_library(
+        None,
         Some(LibraryOverride::CuBlasLt),
         &crate_root,
         &["..", "cuda_types", "src", "cublaslt.rs"],
@@ -782,32 +818,22 @@ fn generate_ml(crate_root: &PathBuf) {
         .generate()
         .unwrap()
         .to_string();
-    let mut module: syn::File = syn::parse_str(&ml_header).unwrap();
-    let mut converter = ConvertIntoRustResult::new(ConvertIntoRustResultOptions {
-        type_: "nvmlReturn_t",
-        underlying_type: "nvmlReturn_enum",
-        new_error_type: "nvmlError_t",
-        error_prefix: ("NVML_ERROR_", "ERROR_"),
-        success: ("NVML_SUCCESS", "SUCCESS"),
-    });
-    module.items = module
-        .items
-        .into_iter()
-        .filter_map(|item| match item {
-            Item::Const(const_) => converter.get_const(const_).map(Item::Const),
-            Item::Use(use_) => converter.get_use(use_).map(Item::Use),
-            Item::Type(type_) => converter.get_type(type_).map(Item::Type),
-            item => Some(item),
-        })
-        .collect::<Vec<_>>();
-    converter.flush(&mut module.items);
+    let module: syn::File = syn::parse_str(&ml_header).unwrap();
     generate_functions(
         &crate_root,
         "nvml",
         &["..", "cuda_macros", "src", "nvml.rs"],
         &module,
     );
+    let convert_options = ConvertIntoRustResultOptions {
+        type_: "nvmlReturn_t",
+        underlying_type: "nvmlReturn_enum",
+        new_error_type: "nvmlError_t",
+        error_prefix: ("NVML_ERROR_", "ERROR_"),
+        success: ("NVML_SUCCESS", "SUCCESS"),
+    };
     generate_types_library(
+        Some(convert_options),
         None,
         &crate_root,
         &["..", "cuda_types", "src", "nvml.rs"],
@@ -816,12 +842,13 @@ fn generate_ml(crate_root: &PathBuf) {
 }
 
 fn generate_types_library(
+    convert_options: Option<ConvertIntoRustResultOptions>,
     override_: Option<LibraryOverride>,
     crate_root: &PathBuf,
     path: &[&str],
     module: &syn::File,
 ) {
-    let module = generate_types_library_impl(module);
+    let module = generate_types_library_impl(convert_options, module);
     let mut output = crate_root.clone();
     output.extend(path);
     let mut text =
@@ -846,7 +873,10 @@ enum LibraryOverride {
     CuFft,
 }
 
-fn generate_types_library_impl(module: &syn::File) -> syn::File {
+fn generate_types_library_impl(
+    convert_options: Option<ConvertIntoRustResultOptions>,
+    module: &syn::File,
+) -> syn::File {
     let known_reexports: Punctuated<syn::Item, syn::parse::Nothing> = parse_quote! {
         pub type __half = u16;
         pub type __nv_bfloat16 = u16;
@@ -860,11 +890,28 @@ fn generate_types_library_impl(module: &syn::File) -> syn::File {
         pub type cudaAsyncNotificationType = super::cuda::CUasyncNotificationType_enum;
         pub type cudaGraph_t = super::cuda::CUgraph;
     };
-    let non_fn = module.items.iter().filter_map(|item| match item {
+    let remove_functions = |item| match item {
         Item::ForeignMod(_) => None,
         _ => Some(item),
-    });
-    let items = known_reexports.iter().chain(non_fn);
+    };
+    let non_fn = if let Some(options) = convert_options {
+        let mut converter = ConvertIntoRustResult::new(options);
+        let mut non_fn = converter
+            .convert(module.items.clone())
+            .filter_map(remove_functions)
+            .collect::<Vec<_>>();
+        converter.flush(&mut non_fn);
+        non_fn
+    } else {
+        let non_fn = module
+            .items
+            .clone()
+            .into_iter()
+            .filter_map(remove_functions)
+            .collect::<Vec<_>>();
+        non_fn
+    };
+    let items = known_reexports.into_iter().chain(non_fn);
     parse_quote! {
         #(#items)*
     }
@@ -894,16 +941,7 @@ fn generate_hip_runtime(output: &PathBuf, path: &[&str]) {
         error_prefix: ("hipError", "Error"),
         success: ("hipSuccess", "Success"),
     });
-    module.items = module
-        .items
-        .into_iter()
-        .filter_map(|item| match item {
-            Item::Const(const_) => converter.get_const(const_).map(Item::Const),
-            Item::Use(use_) => converter.get_use(use_).map(Item::Use),
-            Item::Type(type_) => converter.get_type(type_).map(Item::Type),
-            item => Some(item),
-        })
-        .collect::<Vec<_>>();
+    module.items = converter.convert(module.items).collect::<Vec<Item>>();
     converter.flush(&mut module.items);
     add_send_sync(
         &mut module.items,
@@ -1004,14 +1042,10 @@ fn generate_types_cuda(output: &PathBuf, path: &[&str], module: &syn::File) {
         error_prefix: ("CUDA_ERROR_", "ERROR_"),
         success: ("CUDA_SUCCESS", "SUCCESS"),
     });
-    module.items = module
-        .items
-        .into_iter()
+    module.items = converter
+        .convert(module.items)
         .filter_map(|item| match item {
             Item::ForeignMod(_) => None,
-            Item::Const(const_) => converter.get_const(const_).map(Item::Const),
-            Item::Use(use_) => converter.get_use(use_).map(Item::Use),
-            Item::Type(type_) => converter.get_type(type_).map(Item::Type),
             Item::Struct(mut struct_) => {
                 let ident_string = struct_.ident.to_string();
                 match &*ident_string {
@@ -1064,6 +1098,7 @@ fn write_rust_to_file(path: impl AsRef<std::path::Path>, content: &str) {
     file.write(content.as_bytes()).unwrap();
 }
 
+#[derive(Clone)]
 struct ConvertIntoRustResultOptions {
     type_: &'static str,
     underlying_type: &'static str,
@@ -1165,6 +1200,15 @@ impl ConvertIntoRustResult {
             Some(type_)
         }
     }
+
+    fn convert(&mut self, items: Vec<Item>) -> impl Iterator<Item = Item> + use<'_> {
+        items.into_iter().filter_map(|item| match item {
+            Item::Const(const_) => self.get_const(const_).map(Item::Const),
+            Item::Use(use_) => self.get_use(use_).map(Item::Use),
+            Item::Type(type_) => self.get_type(type_).map(Item::Type),
+            item => Some(item),
+        })
+    }
 }
 
 struct FixAbi;
@@ -1324,6 +1368,7 @@ fn generate_display_perflib(
         .iter()
         .filter_map(|i| cuda_derive_display_trait_for_item(types_crate, &mut derive_state, i))
         .collect::<Vec<_>>();
+    // TODO: derive result display trait (look at curesult_display_trait)
     let mut output = output.clone();
     output.extend(path);
     write_rust_to_file(
diff --git a/zluda_fft/src/impl.rs b/zluda_fft/src/impl.rs
index ece814e..94cc02b 100644
--- a/zluda_fft/src/impl.rs
+++ b/zluda_fft/src/impl.rs
@@ -1,11 +1,11 @@
-use cuda_types::cufft::cufftResult_t;
+use cuda_types::cufft::*;
 
 #[cfg(debug_assertions)]
-pub(crate) fn unimplemented() -> cufftResult_t {
+pub(crate) fn unimplemented() -> cufftResult {
     unimplemented!()
 }
 
 #[cfg(not(debug_assertions))]
-pub(crate) fn unimplemented() -> cufftResult_t {
-    cufftResult_t::CUFFT_NOT_SUPPORTED
+pub(crate) fn unimplemented() -> cufftResult {
+    cufftResult::ERROR_NOT_SUPPORTED
 }