union init

1 files changed, 13 insertions, 4 deletions

diff --git a/bootstrap/test.cff b/bootstrap/test.cff
index e466bba..a000224 100644
--- a/bootstrap/test.cff
+++ b/bootstrap/test.cff
@@ -1,11 +1,12 @@
 import "libc.hff";
 import "libc.hff";
+
 union Val {
-   x i64,
-   lo i32,
-   y f64,
+   u u32,
+   f f32,
 }
 
+
 enum Color {
    Red, Green, Blue
 }
@@ -50,9 +51,16 @@ struct Vec2f {
 
 fn spanz(cstr *const u8) [#]const u8 {
    extern fn strlen(s *const u8) usize;
-   return cstr[0::strlen(cstr)];
+   return cstr[0::strlen(cstr) + 1];
 }
 
+defmacro transmute(Type, x) [
+   (do
+      union T { from typeof(x), to Type };
+      T{x}.to;
+   )
+]
+
 extern fn main (argc int, argv **u8) int {
 
    let colors [3]Color = { :Red, :Green, :Blue } ;
@@ -77,6 +85,7 @@ extern fn main (argc int, argv **u8) int {
 
    printf("sizeof(is) = %zu\n", sizeof(is));
    printf("sizeof *void = %zu\n", sizeof *void);
+   printf("1.2 -> %#.8x\n", transmute(u32, 1.2f));
 
 
    return 0;