Transpile all C code to Rust

Cargo.toml

@@ -4,11 +4,7 @@ description = "Robust predicates for computer geometry"
 version = "0.1.4"
 authors = ["hporro <[email protected]>"]
 edition = "2021"
-build = "build.rs"
 license = "MIT"
 keywords = ["geometry", "math", "robust", "predicates"]
 homepage = "https://github.com/hporro/robust-predicates"
 repository = "https://github.com/hporro/robust-predicates"
-
-[build-dependencies]
-cc = "1.0.66"

src/lib.rs

@@ -1,46 +1,37 @@
+mod predicates;
+
 use std::sync::Once;
 
 static ALREADY_INIT: Once = Once::new();
 
-mod c_predicates {
-    #[link(name = "predicates")]
-    extern "C" { 
-        pub fn exactinit();
-        pub fn orient2d(pa: &[f64;2], pb: &[f64;2], pc: &[f64;2]) -> f64;
-        pub fn orient3d(pa: &[f64;3], pb: &[f64;3], pc: &[f64;3], pd: &[f64;3]) -> f64;
-        pub fn incircle(pa: &[f64;2], pb: &[f64;2], pc: &[f64;2], pd: &[f64;2]) -> f64;
-        pub fn insphere(pa: &[f64;3], pb: &[f64;3], pc: &[f64;3], pd: &[f64;3], pe: &[f64;3]) -> f64;
-    }
-}
-
 pub fn exactinit() {
     ALREADY_INIT.call_once(|| {
         unsafe {
-            c_predicates::exactinit();
+            predicates::exactinit();
         }
     })
 }
 
 pub fn orient2d(pa: &[f64;2], pb: &[f64;2], pc: &[f64;2]) -> f64 {
     unsafe {
-        c_predicates::orient2d(pa, pb, pc)
+        predicates::orient2d(pa.as_ptr(), pb.as_ptr(), pc.as_ptr())
     }
 }
 
 pub fn orient3d(pa: &[f64;3], pb: &[f64;3], pc: &[f64;3], pd: &[f64;3]) -> f64 {
     unsafe {
-        c_predicates::orient3d(pa, pb, pc, pd)
+        predicates::orient3d(pa.as_ptr(), pb.as_ptr(), pc.as_ptr(), pd.as_ptr())
     }
 }
 
 pub fn incircle(pa: &[f64;2], pb: &[f64;2], pc: &[f64;2], pd: &[f64;2]) -> f64 {
     unsafe {
-        c_predicates::incircle(pa, pb, pc, pd)
+        predicates::incircle(pa.as_ptr(), pb.as_ptr(), pc.as_ptr(), pd.as_ptr())
     }
 }
 
 pub fn insphere(pa: &[f64;3], pb: &[f64;3], pc: &[f64;3], pd: &[f64;3], pe: &[f64;3]) -> f64 {
     unsafe {
-        c_predicates::insphere(pa, pb, pc, pd, pe)
+        predicates::insphere(pa.as_ptr(), pb.as_ptr(), pc.as_ptr(), pd.as_ptr(), pe.as_ptr())
     }
 }