math: use extern struct for guaranteed memory layout

Signed-off-by: Stephen Gutekanst <[email protected]>
hexops · Sep 8, 2023 · 40a1ba0 · 40a1ba0
1 parent 0538698
commit 40a1ba0
Show file tree

Hide file tree

Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/src/math/mat.zig b/src/math/mat.zig
@@ -10,7 +10,7 @@ pub fn Mat(
     comptime n_rows: usize,
     comptime Vector: type,
 ) type {
-    return struct {
+    return extern struct {
         v: [cols]Vec,
 
         /// The number of columns, e.g. Mat3x4.cols == 3

diff --git a/src/math/quat.zig b/src/math/quat.zig
@@ -6,7 +6,7 @@ const math = mach.math;
 const vec = @import("vec.zig");
 
 pub fn Quat(comptime Scalar: type) type {
-    return struct {
+    return extern struct {
         v: vec.Vec(4, Scalar),
 
         /// The scalar type of this matrix, e.g. Mat3x3.T == f32

diff --git a/src/math/vec.zig b/src/math/vec.zig
@@ -5,7 +5,7 @@ const testing = mach.testing;
 const math = mach.math;
 
 pub fn Vec(comptime n_value: usize, comptime Scalar: type) type {
-    return struct {
+    return extern struct {
         v: Vector,
 
         /// The vector dimension size, e.g. Vec3.n == 3