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sx/examples/cfnptr/1635-cfnptr-qsort.sx
agra 66bdc70bf1 test: group examples into per-category folders
Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
2026-06-21 14:41:34 +03:00

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// PLAN-HTTPZ C2: an sx `abi(.c)` function passes by name as a
// typed C function pointer — libc qsort drives an sx comparator.
#import "modules/std.sx";
clib :: #library "c";
qsort :: (base: [*]u8, nel: usize, width: usize, compar: (*void, *void) -> i32 abi(.c)) extern clib;
cmp_i32 :: (a: *void, b: *void) -> i32 abi(.c) {
pa : *i32 = xx a;
pb : *i32 = xx b;
if pa.* < pb.* { return -1; }
if pa.* > pb.* { return 1; }
return 0;
}
main :: () -> i32 {
arr : [5]i32 = .[ 4, 1, 5, 2, 3 ];
qsort(xx @arr[0], 5, 4, cmp_i32);
i := 0;
while i < 5 {
if arr[i] != cast(i32)(i + 1) { print("not sorted at {}\n", i); return 1; }
i += 1;
}
print("qsort via sx comparator ok\n");
return 0;
}