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(* Some tests on C memory operations. *)
fun check f a b =
if f a = b then () else raise Fail "Mismatch";
(* 64-bit operations are not implemented in 32-bit mode. *)
fun checkEx f a b =
(if f a = b then () else raise Fail "Mismatch") handle Foreign.Foreign _ => ();
open Foreign.Memory;
val m = malloc 0w32;
val r = ref 0w0;
set32(m, 0w0, 0wx12343421);
set32(m, 0w1, 0w0);
set32(m, 0w2, 0w0);
set32(m, 0w3, 0w0);
set32(m, 0w4, 0w0);
set32(m, 0w5, 0w0);
set32(m, 0w6, 0wxabccccab);
set32(m, 0w7, 0wx12211221);
(* These are often handled differently depending on whether the offset is
a compile-time constant. *)
check get32 (m, 0w0) 0wx12343421;
check get32 (m, !r) 0wx12343421;
check get16 (m, 0w14) 0wx1221;
r := 0w14;
check get16 (m, !r) 0wx1221;
checkEx get64 (m, 0w1) 0w0;
r := 0w1;
checkEx get64 (m, !r) 0w0;
check get8 (m, 0w24) 0wxab;
r := 0w24;
check get8 (m, !r) 0wxab;
set8(m, !r, 0wx88);
check get8 (m, 0w24) 0wx88;
set64(m, 0w1, 0wx123456) handle Foreign.Foreign _ => ();
checkEx get64 (m, 0w1) 0wx123456;
set16(m, 0w4, 0wxffee);
check get16 (m, 0w4) 0wxffee;
setFloat(m, 0w2, 1.0);
if Real.==(getFloat(m, 0w2), 1.0) then () else raise Fail "Mismatch";
r := 0w2;
if Real.==(getFloat(m, !r), 1.0) then () else raise Fail "Mismatch";
setDouble(m, 0w2, 2.0);
if Real.==(getDouble(m, 0w2), 2.0) then () else raise Fail "Mismatch";
if Real.==(getDouble(m, !r), 2.0) then () else raise Fail "Mismatch";
free m;
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