1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
default Order dec
$include <prelude.sail>
val "extz_vec" : forall 'n 'm. (atom('m),bitvector('n, dec)) -> bitvector('m, dec) effect pure
val extz : forall 'n 'm. (implicit('m), bitvector('n, dec)) -> bitvector('m, dec) effect pure
function extz(m,v) = extz_vec(m,v)
val "exts_vec" : forall 'n 'm. (atom('m),bitvector('n, dec)) -> bitvector('m, dec) effect pure
val exts : forall 'n 'm. (implicit('m), bitvector('n, dec)) -> bitvector('m, dec) effect pure
function exts(m,v) = exts_vec(m,v)
/* A function which is merely parametrised by a size does not need to be
monomorphised */
val parametric : forall 'n, 'n in {32,64}. atom('n) -> bits(64)
function parametric(n) = {
let x : bits('n) = exts(0x80000000) in
extz(x)
}
/* But if we do a calculation on the size then we'll need to case split */
val depends : forall 'n, 'n in {16,32}. atom('n) -> bits(64)
function depends(n) = {
let 'm = 2 * n in
let x : bits('m) = exts(0x80000000) in
extz(x)
}
val run : unit -> unit effect {escape}
function run () = {
assert(parametric(32) == 0x0000000080000000);
assert(parametric(64) == 0xffffffff80000000);
assert(depends(16) == 0x0000000080000000);
assert(depends(32) == 0xffffffff80000000);
}
|
