From ecd09eb2cd82b5168dc2fd791d13f8249a878895 Mon Sep 17 00:00:00 2001
From: Toshiki Teramura <toshiki.teramura@gmail.com>
Date: Thu, 8 Sep 2022 23:48:46 +0900
Subject: [PATCH] Split lax::alloc submodule

---
 lax/src/alloc.rs | 60 ++++++++++++++++++++++++++++++++++++++++++++++++
 lax/src/lib.rs   | 60 ++----------------------------------------------
 2 files changed, 62 insertions(+), 58 deletions(-)
 create mode 100644 lax/src/alloc.rs

diff --git a/lax/src/alloc.rs b/lax/src/alloc.rs
new file mode 100644
index 00000000..62116f85
--- /dev/null
+++ b/lax/src/alloc.rs
@@ -0,0 +1,60 @@
+use cauchy::*;
+use std::mem::MaybeUninit;
+
+/// Helper for getting pointer of slice
+pub(crate) trait AsPtr: Sized {
+    type Elem;
+    fn as_ptr(vec: &[Self]) -> *const Self::Elem;
+    fn as_mut_ptr(vec: &mut [Self]) -> *mut Self::Elem;
+}
+
+macro_rules! impl_as_ptr {
+    ($target:ty, $elem:ty) => {
+        impl AsPtr for $target {
+            type Elem = $elem;
+            fn as_ptr(vec: &[Self]) -> *const Self::Elem {
+                vec.as_ptr() as *const _
+            }
+            fn as_mut_ptr(vec: &mut [Self]) -> *mut Self::Elem {
+                vec.as_mut_ptr() as *mut _
+            }
+        }
+    };
+}
+impl_as_ptr!(i32, i32);
+impl_as_ptr!(f32, f32);
+impl_as_ptr!(f64, f64);
+impl_as_ptr!(c32, lapack_sys::__BindgenComplex<f32>);
+impl_as_ptr!(c64, lapack_sys::__BindgenComplex<f64>);
+impl_as_ptr!(MaybeUninit<i32>, i32);
+impl_as_ptr!(MaybeUninit<f32>, f32);
+impl_as_ptr!(MaybeUninit<f64>, f64);
+impl_as_ptr!(MaybeUninit<c32>, lapack_sys::__BindgenComplex<f32>);
+impl_as_ptr!(MaybeUninit<c64>, lapack_sys::__BindgenComplex<f64>);
+
+pub(crate) trait VecAssumeInit {
+    type Target;
+    unsafe fn assume_init(self) -> Self::Target;
+}
+
+impl<T> VecAssumeInit for Vec<MaybeUninit<T>> {
+    type Target = Vec<T>;
+    unsafe fn assume_init(self) -> Self::Target {
+        // FIXME use Vec::into_raw_parts instead after stablized
+        // https://doc.rust-lang.org/std/vec/struct.Vec.html#method.into_raw_parts
+        let mut me = std::mem::ManuallyDrop::new(self);
+        Vec::from_raw_parts(me.as_mut_ptr() as *mut T, me.len(), me.capacity())
+    }
+}
+
+/// Create a vector without initialization
+///
+/// Safety
+/// ------
+/// - Memory is not initialized. Do not read the memory before write.
+///
+pub(crate) unsafe fn vec_uninit<T: Sized>(n: usize) -> Vec<MaybeUninit<T>> {
+    let mut v = Vec::with_capacity(n);
+    v.set_len(n);
+    v
+}
diff --git a/lax/src/lib.rs b/lax/src/lib.rs
index 47f3eedc..8f697fbc 100644
--- a/lax/src/lib.rs
+++ b/lax/src/lib.rs
@@ -84,6 +84,7 @@ pub mod error;
 pub mod flags;
 pub mod layout;
 
+mod alloc;
 mod cholesky;
 mod eig;
 mod eigh;
@@ -113,6 +114,7 @@ pub use self::svddc::*;
 pub use self::triangular::*;
 pub use self::tridiagonal::*;
 
+use self::alloc::*;
 use cauchy::*;
 use std::mem::MaybeUninit;
 
@@ -140,61 +142,3 @@ impl Lapack for f32 {}
 impl Lapack for f64 {}
 impl Lapack for c32 {}
 impl Lapack for c64 {}
-
-/// Helper for getting pointer of slice
-pub(crate) trait AsPtr: Sized {
-    type Elem;
-    fn as_ptr(vec: &[Self]) -> *const Self::Elem;
-    fn as_mut_ptr(vec: &mut [Self]) -> *mut Self::Elem;
-}
-
-macro_rules! impl_as_ptr {
-    ($target:ty, $elem:ty) => {
-        impl AsPtr for $target {
-            type Elem = $elem;
-            fn as_ptr(vec: &[Self]) -> *const Self::Elem {
-                vec.as_ptr() as *const _
-            }
-            fn as_mut_ptr(vec: &mut [Self]) -> *mut Self::Elem {
-                vec.as_mut_ptr() as *mut _
-            }
-        }
-    };
-}
-impl_as_ptr!(i32, i32);
-impl_as_ptr!(f32, f32);
-impl_as_ptr!(f64, f64);
-impl_as_ptr!(c32, lapack_sys::__BindgenComplex<f32>);
-impl_as_ptr!(c64, lapack_sys::__BindgenComplex<f64>);
-impl_as_ptr!(MaybeUninit<i32>, i32);
-impl_as_ptr!(MaybeUninit<f32>, f32);
-impl_as_ptr!(MaybeUninit<f64>, f64);
-impl_as_ptr!(MaybeUninit<c32>, lapack_sys::__BindgenComplex<f32>);
-impl_as_ptr!(MaybeUninit<c64>, lapack_sys::__BindgenComplex<f64>);
-
-pub(crate) trait VecAssumeInit {
-    type Target;
-    unsafe fn assume_init(self) -> Self::Target;
-}
-
-impl<T> VecAssumeInit for Vec<MaybeUninit<T>> {
-    type Target = Vec<T>;
-    unsafe fn assume_init(self) -> Self::Target {
-        // FIXME use Vec::into_raw_parts instead after stablized
-        // https://doc.rust-lang.org/std/vec/struct.Vec.html#method.into_raw_parts
-        let mut me = std::mem::ManuallyDrop::new(self);
-        Vec::from_raw_parts(me.as_mut_ptr() as *mut T, me.len(), me.capacity())
-    }
-}
-
-/// Create a vector without initialization
-///
-/// Safety
-/// ------
-/// - Memory is not initialized. Do not read the memory before write.
-///
-unsafe fn vec_uninit<T: Sized>(n: usize) -> Vec<MaybeUninit<T>> {
-    let mut v = Vec::with_capacity(n);
-    v.set_len(n);
-    v
-}