- Modified some thermocouple functions to use f64 instead of f32

- Added thermistor
- Added resistive divider

Cargo.toml

@@ -9,7 +9,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.3.3"
+version = "0.3.4"
 edition = "2021"
 repository = "https://git.bfpower.io/BFPOWER/physical"
 readme = "README.md"
@@ -107,7 +107,9 @@ readme.workspace = true
 license.workspace = true
 
 [features]
-thermocouple_k = []
+resistive-divider = []
+thermocouple-k = ["libm"]
+thermistor = ["libm"]
 lm35 = []
 pid = []
 stm32 = []
@@ -115,7 +117,7 @@ stm32 = []
 [dependencies]
 uom = { workspace = true }
 num-traits = { workspace = true }
-libm = { workspace = true }
+libm = { workspace = true, optional = true }
 serde = { workspace = true, optional = true }
 
 #---------------------------------------------------------------------------------------------------------------------