1const common = @import("./common.zig");
 2const addf3 = @import("./addf3.zig").addf3;
 3
 4pub const panic = common.panic;
 5
 6comptime {
 7    if (common.want_aeabi) {
 8        @export(&__aeabi_dsub, .{ .name = "__aeabi_dsub", .linkage = common.linkage, .visibility = common.visibility });
 9    } else {
10        @export(&__subdf3, .{ .name = "__subdf3", .linkage = common.linkage, .visibility = common.visibility });
11    }
12}
13
14fn __subdf3(a: f64, b: f64) callconv(.c) f64 {
15    return sub(a, b);
16}
17
18fn __aeabi_dsub(a: f64, b: f64) callconv(.{ .arm_aapcs = .{} }) f64 {
19    return sub(a, b);
20}
21
22inline fn sub(a: f64, b: f64) f64 {
23    const neg_b = @as(f64, @bitCast(@as(u64, @bitCast(b)) ^ (@as(u64, 1) << 63)));
24    return addf3(f64, a, neg_b);
25}