diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..998b4ef
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,6 @@
+[build]
+rustflags = ["-Clinker-plugin-lto", "-Clinker=clang-13", "-Clink-arg=-fuse-ld=lld-13"]
+rustdocflags = ["--cfg", "docsrs"]
+
+[env]
+CC = "clang-13"
diff --git a/Cargo.toml b/Cargo.toml
index 927888b..f95f9c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,10 +65,9 @@ cc = "1"
 criterion = { version = "0.3", features = ["html_reports"] }
 rand = "0.8"
 
-[profile.test]
-# run tests at high optimization to exercise typical codegen
-opt-level = 3
-
 [profile.release]
 lto="thin"
 codegen-units=1
+
+[package.metadata.docs.rs]
+all-features = true
diff --git a/rust-toolchain b/rust-toolchain
index eb726a2..43c989b 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2021-11-03
+1.56.1
diff --git a/src/lib.rs b/src/lib.rs
index cbbefff..145728a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,5 @@
 #![doc = include_str!("../README.md")]
-#![feature(doc_cfg)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 use core::{
     cmp, fmt,
diff --git a/src/nalgebra.rs b/src/nalgebra.rs
index 998f0b2..c988495 100644
--- a/src/nalgebra.rs
+++ b/src/nalgebra.rs
@@ -1,15 +1,4 @@
-#![cfg(any(feature = "nalgebra-v021"))]
-macro_rules! forward_fn_const {
-    ($fast_ty:ident, $base_ty:ident
-     $(fn $fn_name:ident () -> Self ;)*) => {
-        $(
-            fn $fn_name () -> $fast_ty {
-                <$fast_ty>::new(<$base_ty>::$fn_name())
-            }
-        )*
-    }
-}
-
+#[cfg(any(feature = "nalgebra-v021", feature = "nalgebra-v029"))]
 macro_rules! impl_nalgebra {
     ($($fast_ty:ident, $base_ty:ident),* ;
      $nalgebra_version:path, $simba_version:path, $approx_version:path ;
@@ -226,8 +215,8 @@ macro_rules! impl_nalgebra {
                     fn min(self, other: Self) -> Self;
                 }
 
-                forward_fn_const! {
-                    $fast_ty, $base_ty
+                impl_nalgebra! {
+                    @fn_consts $fast_ty, $base_ty
                     fn pi() -> Self ;
                     fn two_pi() -> Self ;
                     fn frac_pi_2() -> Self ;
@@ -366,10 +355,20 @@ macro_rules! impl_nalgebra {
             }
         )*
     };
+
+    (@fn_consts $fast_ty: ident, $base_ty: ident
+        $(fn $fn_name:ident () -> Self ;)*
+    ) => {
+        $(
+            fn $fn_name () -> $fast_ty {
+                <$fast_ty>::new(<$base_ty>::$fn_name())
+            }
+        )*
+    };
 }
 
 #[cfg(feature = "nalgebra-v021")]
-#[doc(cfg(feature = "nalgebra-v021"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "nalgebra-v021")))]
 mod nalgebra_v021 {
     macro_rules! real_field {
         ($fast_ty:ident, $base_ty:ident) => {
@@ -393,7 +392,7 @@ mod nalgebra_v021 {
 }
 
 #[cfg(feature = "nalgebra-v029")]
-#[doc(cfg(feature = "nalgebra-v029"))]
+#[cfg_attr(docsrs, doc(cfg(feature = "nalgebra-v029")))]
 mod nalgebra_v029 {
     macro_rules! real_field {
         ($fast_ty:ident, $base_ty:ident) => {
diff --git a/src/num_traits.rs b/src/num_traits.rs
index 796dd82..5cfa6c8 100644
--- a/src/num_traits.rs
+++ b/src/num_traits.rs
@@ -1,5 +1,5 @@
 #![cfg(feature = "num-traits")]
-#![doc(cfg(feature = "num-traits"))]
+#![cfg_attr(docsrs, doc(cfg(feature = "num-traits")))]
 use crate::{FF32, FF64};
 use core::num::FpCategory;