From ed4d0ee1fd83e910105f5fa94c998f5ee9092ac5 Mon Sep 17 00:00:00 2001
From: Max <max.kaenner@stud.uni-hannover.de>
Date: Wed, 22 Feb 2023 14:16:24 +0100
Subject: [PATCH] Make std optional

---
 Cargo.toml     | 2 ++
 src/display.rs | 3 +++
 src/lib.rs     | 9 +++++++++
 3 files changed, 14 insertions(+)

diff --git a/Cargo.toml b/Cargo.toml
index 5ccfb9d..c35bd43 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,4 +17,6 @@ num-traits = "0.2"
 defmt = { version = "0.3", optional = true }
 
 [features]
+default = ["std"]
 defmt = ["dep:defmt"]
+std = []
diff --git a/src/display.rs b/src/display.rs
index 8c2ae65..163bbfd 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -1,3 +1,6 @@
+#[cfg(not(feature = "std"))]
+use core::fmt::{Display, Formatter};
+#[cfg(feature = "std")]
 use std::fmt::{Display, Formatter};
 
 use typenum::Integer;
diff --git a/src/lib.rs b/src/lib.rs
index 3a78cc4..f0437c5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,15 @@
 mod display;
 pub mod types;
 
+#[cfg(not(feature = "std"))]
+use core::{
+    marker::PhantomData,
+    ops::{
+        Add, AddAssign, Deref, DerefMut, Div, DivAssign, Mul, MulAssign, Neg, Rem, RemAssign, Sub,
+        SubAssign,
+    },
+};
+#[cfg(feature = "std")]
 use std::{
     marker::PhantomData,
     ops::{