mirror of
https://github.com/ziglang/zig.git
synced 2024-11-27 23:52:31 +00:00
0556a2ba53
Finishes cleanups that I started in other commits in this branch. * Use common.linkage for all exports instead of redoing the logic in each file. * Remove pointless `@setRuntimeSafety` calls. * Avoid redundantly exporting multiple versions of functions. For example, if PPC wants `ceilf128` then don't also export `ceilq`; similarly if ARM wants `__aeabi_ddiv` then don't also export `__divdf3`. * Use `inline` for helper functions instead of making inline calls at callsites.
42 lines
1.0 KiB
Zig
42 lines
1.0 KiB
Zig
//! neg - negate (the number)
|
|
//! - negXi2 for unoptimized little and big endian
|
|
//! sfffffff = 2^31-1
|
|
//! two's complement inverting bits and add 1 would result in -INT_MIN == 0
|
|
//! => -INT_MIN = -2^31 forbidden
|
|
//! * size optimized builds
|
|
//! * machines that dont support carry operations
|
|
|
|
const std = @import("std");
|
|
const builtin = @import("builtin");
|
|
const common = @import("common.zig");
|
|
|
|
pub const panic = common.panic;
|
|
|
|
comptime {
|
|
@export(__negsi2, .{ .name = "__negsi2", .linkage = common.linkage });
|
|
@export(__negdi2, .{ .name = "__negdi2", .linkage = common.linkage });
|
|
@export(__negti2, .{ .name = "__negti2", .linkage = common.linkage });
|
|
}
|
|
|
|
pub fn __negsi2(a: i32) callconv(.C) i32 {
|
|
return negXi2(i32, a);
|
|
}
|
|
|
|
pub fn __negdi2(a: i64) callconv(.C) i64 {
|
|
return negXi2(i64, a);
|
|
}
|
|
|
|
pub fn __negti2(a: i128) callconv(.C) i128 {
|
|
return negXi2(i128, a);
|
|
}
|
|
|
|
inline fn negXi2(comptime T: type, a: T) T {
|
|
return -a;
|
|
}
|
|
|
|
test {
|
|
_ = @import("negsi2_test.zig");
|
|
_ = @import("negdi2_test.zig");
|
|
_ = @import("negti2_test.zig");
|
|
}
|