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import "libc.hff";
union Val {
u u32,
f f32,
}
enum Color {
Red, Green, Blue
}
defmacro each(i, x, arr, &body) [
for let i = 0; i < arr.#len; ++i {
let x = arr[i];
body
}
]
static xs *void = {};
fn isort(xs *int, n usize) void {
fn icmp(lhs *const void, rhs *const void, _ *void) int {
let lhs = *as(*int)lhs,
rhs = *as(*int)rhs;
return lhs - rhs;
}
qsort(xs, n, 4, &icmp);
fn foo() void {}
let x= &foo;
x();
}
struct List;
struct List {
next *List,
val int,
fn ok(l List) void;
fn length(l *List) usize {
let n = 0z;
ok(*l);
for ; l; l = l.next { ++n; }
return n;
}
fn ok(l List) void {}
}
struct Vec2f;
struct Vec2f {
x f32,
y f32,
fn mag(v Vec2f) f32 {
extern fn sqrtf(_ f32) f32;
return sqrtf((v.x * v.x) + (v.y * v.y));
}
fn zero(v *Vec2f) void {
v.x = 0;
v.y = 0;
}
}
fn spanz(cstr *const u8) [#]const u8 {
extern fn strlen(s *const u8) usize;
return cstr[0 :: strlen(cstr)];
}
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 } ;
let x = Vec2f { .y: 1, .x: 2.4 };
let p *const Vec2f = &x;
printf("v = { %g, %g }\n", x.x, p.y);
printf("mag = %g\n", x->mag());
Vec2f:zero(&x);
printf("mag = %g\n", (&x)->mag());
let is []int = { [4] = 1, 2, [1 - 1] = 3 };
isort(is, is.#len);
each(i, x, is) {
printf("%d\n", x);
}
let slice [#]int = is[3::5];
printf("sl %d\n", slice[0]);
slice = slice[1::4];
printf("sl %d\n", slice[0]);
slice.#len;
let const v Vec2f = {};
// v->zero();
// v.x += 1;
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;
}
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