Move Float to separate crate

Cargo.toml

@@ -8,6 +8,7 @@ members = [
     "shallow_water",
     "gridgeneration",
     "heat-equation",
+    "utils/float",
 ]
 
 default-members = ["sbp", "euler", "maxwell", "shallow_water"]

sbp/Cargo.toml

@@ -12,11 +12,12 @@ rayon = { version = "1.3.0", optional = true }
 sprs = { version = "0.10.0", optional = true, default-features = false }
 serde = { version = "1.0.115", optional = true, default-features = false, features = ["derive"] }
 num-traits = "0.2.14"
+float = { path = "../utils/float" }
 
 [features]
 # Use f32 as precision, default is f64
-f32 = []
-fast-float = []
+f32 = ["float/f32"]
+fast-float = ["float/fast-float"]
 sparse = ["sprs"]
 serde1 = ["serde", "ndarray/serde"]
 

sbp/src/lib.rs

@@ -3,20 +3,7 @@
 #![feature(array_chunks)]
 #![feature(const_fn_floating_point_arithmetic)]
 
-/// Type used for floats, configure with the `f32` feature
-#[cfg(feature = "f32")]
-pub type Float = f32;
-#[cfg(not(feature = "f32"))]
-/// Type used for floats, configure with the `f32` feature
-pub type Float = f64;
-
-/// Associated constants for [`Float`]
-pub mod consts {
-    #[cfg(feature = "f32")]
-    pub use std::f32::consts::*;
-    #[cfg(not(feature = "f32"))]
-    pub use std::f64::consts::*;
-}
+pub use float::{consts, Float};
 
 /// Grid and grid metrics
 pub mod grid;

sbp/src/operators/algos.rs

@@ -6,9 +6,7 @@ pub(crate) mod constmatrix;
 pub(crate) use constmatrix::{ColVector, Matrix, RowVector};
 
 #[cfg(feature = "fast-float")]
-mod fastfloat;
-#[cfg(feature = "fast-float")]
-use fastfloat::FastFloat;
+use float::FastFloat;
 
 #[derive(Clone, Debug, PartialEq)]
 pub(crate) struct DiagonalMatrix<const B: usize> {

utils/float/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "float"
+version = "0.1.0"
+authors = ["Magnus Ulimoen <magnus@ulimoen.dev>"]
+edition = "2018"
+
+[features]
+f32 = []
+fast-float = []
+
+[dependencies]
+num-traits = "0.2.14"

utils/float/src/fastfloat.rs

@@ -1,8 +1,8 @@
-use super::*;
+use super::Float;
 
 #[repr(transparent)]
 #[derive(Copy, Clone, Debug, PartialEq, Default)]
-pub(crate) struct FastFloat(Float);
+pub struct FastFloat(Float);
 
 use core::intrinsics::{fadd_fast, fdiv_fast, fmul_fast, fsub_fast};
 

utils/float/src/lib.rs

@@ -0,0 +1,23 @@
+//! The Float type used throughout the ecosystem
+
+#![cfg_attr(feature = "fast-float", feature(core_intrinsics))]
+
+/// Type used for floats, configure with the `f32` feature
+#[cfg(feature = "f32")]
+pub type Float = f32;
+#[cfg(not(feature = "f32"))]
+/// Type used for floats, configure with the `f32` feature
+pub type Float = f64;
+
+/// Associated constants for [`Float`]
+pub mod consts {
+    #[cfg(feature = "f32")]
+    pub use std::f32::consts::*;
+    #[cfg(not(feature = "f32"))]
+    pub use std::f64::consts::*;
+}
+
+#[cfg(feature = "fast-float")]
+mod fastfloat;
+#[cfg(feature = "fast-float")]
+pub use fastfloat::FastFloat;