gating the use of crate::intrinsics as raw behind the use of nvptx architecture

Author: Schmiedium

crates/cuda_std/src/float_ext.rs

@@ -1,8 +1,11 @@
 //! Extension trait for [`f32`] and [`f64`], providing high level wrappers on top of
-//! raw libdevice intrinsics from [`intrinsics`](crate::intrinsics).
+//! crate::intrinsics libdevice intrinsics from [`intrinsics`](crate::intrinsics).
 
 use cuda_std_macros::gpu_only;
 
+#[cfg(target_arch = "nvptx64")]
+use crate::intrinsics as raw;
+
 // allows us to add new functions to the trait at any time without needing a new major version.
 mod private {
     pub trait Sealed {}