From 84698796d1bd908978e8d408f7b162e741b42514 Mon Sep 17 00:00:00 2001
From: cscherr <Christoph.Scherr@newtec.de>
Date: Wed, 9 Jul 2025 17:10:40 +0200
Subject: [PATCH] refactor: remove unused dependencies from crc crate

---
 Cargo.lock            |  3 ---
 crates/crc/Cargo.toml |  1 -
 crates/crc/src/lib.rs | 46 -------------------------------------------
 3 files changed, 50 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 8cc5816..d094e9f 100755
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -95,9 +95,6 @@ dependencies = [
 [[package]]
 name = "crc"
 version = "0.1.0"
-dependencies = [
- "num-traits",
-]
 
 [[package]]
 name = "critical-section"
diff --git a/crates/crc/Cargo.toml b/crates/crc/Cargo.toml
index 8886b09..585d3ea 100755
--- a/crates/crc/Cargo.toml
+++ b/crates/crc/Cargo.toml
@@ -4,4 +4,3 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-num-traits = { version = "0.2.19", default-features = false }
diff --git a/crates/crc/src/lib.rs b/crates/crc/src/lib.rs
index 7ee725a..e61b73e 100755
--- a/crates/crc/src/lib.rs
+++ b/crates/crc/src/lib.rs
@@ -9,8 +9,6 @@
 
 #![cfg_attr(not(test), no_std)]
 
-use num_traits::{AsPrimitive, Num, PrimInt, Unsigned};
-
 mod crc_32;
 
 pub const CHECK_DATA: [u8; 9] = *b"123456789";
@@ -25,47 +23,3 @@ pub trait Crc {
     fn process(&mut self, data: &Self::Input);
     fn shift_reg(&mut self) -> &mut Self::Checksum;
 }
-
-pub fn bit_at<N: PrimInt + Unsigned + AsPrimitive<u8>>(mut n: N, idx: usize) -> u8
-where
-    u8: AsPrimitive<N>,
-{
-    n = n & (1.as_() << idx);
-    (n >> idx).as_()
-}
-
-#[cfg(test)]
-mod test {
-    use crate::bit_at;
-
-    #[test]
-    fn test_bit_at() {
-        let a: u8 = 0b11110000;
-        assert_eq!(bit_at(a, 0), 0);
-        assert_eq!(bit_at(a, 1), 0);
-        assert_eq!(bit_at(a, 2), 0);
-        assert_eq!(bit_at(a, 3), 0);
-        assert_eq!(bit_at(a, 4), 1);
-        assert_eq!(bit_at(a, 5), 1);
-        assert_eq!(bit_at(a, 6), 1);
-        assert_eq!(bit_at(a, 7), 1);
-
-        let a: u16 = 0b1111000011110101;
-        assert_eq!(bit_at(a, 0), 1);
-        assert_eq!(bit_at(a, 1), 0);
-        assert_eq!(bit_at(a, 2), 1);
-        assert_eq!(bit_at(a, 3), 0);
-        assert_eq!(bit_at(a, 4), 1);
-        assert_eq!(bit_at(a, 5), 1);
-        assert_eq!(bit_at(a, 6), 1);
-        assert_eq!(bit_at(a, 7), 1);
-        assert_eq!(bit_at(a, 8), 0);
-        assert_eq!(bit_at(a, 9), 0);
-        assert_eq!(bit_at(a, 10), 0);
-        assert_eq!(bit_at(a, 11), 0);
-        assert_eq!(bit_at(a, 12), 1);
-        assert_eq!(bit_at(a, 13), 1);
-        assert_eq!(bit_at(a, 14), 1);
-        assert_eq!(bit_at(a, 15), 1);
-    }
-}