1const std = @import("std");
 2const builtin = @import("builtin");
 3const common = @import("common.zig");
 4
 5pub const panic = common.panic;
 6
 7comptime {
 8    @export(&__cmpsi2, .{ .name = "__cmpsi2", .linkage = common.linkage, .visibility = common.visibility });
 9    @export(&__cmpdi2, .{ .name = "__cmpdi2", .linkage = common.linkage, .visibility = common.visibility });
10    @export(&__cmpti2, .{ .name = "__cmpti2", .linkage = common.linkage, .visibility = common.visibility });
11    @export(&__ucmpsi2, .{ .name = "__ucmpsi2", .linkage = common.linkage, .visibility = common.visibility });
12    @export(&__ucmpdi2, .{ .name = "__ucmpdi2", .linkage = common.linkage, .visibility = common.visibility });
13    @export(&__ucmpti2, .{ .name = "__ucmpti2", .linkage = common.linkage, .visibility = common.visibility });
14}
15
16// cmp - signed compare
17// - cmpXi2_generic for unoptimized little and big endian
18
19// ucmp - unsigned compare
20// - ucmpXi2_generic for unoptimized little and big endian
21
22// a <  b => 0
23// a == b => 1
24// a >  b => 2
25
26inline fn XcmpXi2(comptime T: type, a: T, b: T) i32 {
27    var cmp1: i32 = 0;
28    var cmp2: i32 = 0;
29    if (a > b)
30        cmp1 = 1;
31    if (a < b)
32        cmp2 = 1;
33    return cmp1 - cmp2 + 1;
34}
35
36pub fn __cmpsi2(a: i32, b: i32) callconv(.c) i32 {
37    return XcmpXi2(i32, a, b);
38}
39
40pub fn __cmpdi2(a: i64, b: i64) callconv(.c) i32 {
41    return XcmpXi2(i64, a, b);
42}
43
44pub fn __cmpti2(a: i128, b: i128) callconv(.c) i32 {
45    return XcmpXi2(i128, a, b);
46}
47
48pub fn __ucmpsi2(a: u32, b: u32) callconv(.c) i32 {
49    return XcmpXi2(u32, a, b);
50}
51
52pub fn __ucmpdi2(a: u64, b: u64) callconv(.c) i32 {
53    return XcmpXi2(u64, a, b);
54}
55
56pub fn __ucmpti2(a: u128, b: u128) callconv(.c) i32 {
57    return XcmpXi2(u128, a, b);
58}
59
60test {
61    _ = @import("cmpsi2_test.zig");
62    _ = @import("cmpdi2_test.zig");
63    _ = @import("cmpti2_test.zig");
64
65    _ = @import("ucmpsi2_test.zig");
66    _ = @import("ucmpdi2_test.zig");
67    _ = @import("ucmpti2_test.zig");
68}