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)
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//! - negXi2 for unoptimized little and big endian
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//! sfffffff = 2^31-1
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//! two's complement inverting bits and add 1 would result in -INT_MIN == 0
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//! => -INT_MIN = -2^31 forbidden
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//! * size optimized builds
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//! * machines that dont support carry operations
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const std = @import("std");
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const builtin = @import("builtin");
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const common = @import("common.zig");
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pub const panic = common.panic;
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comptime {
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@export(__negsi2, .{ .name = "__negsi2", .linkage = common.linkage });
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@export(__negdi2, .{ .name = "__negdi2", .linkage = common.linkage });
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@export(__negti2, .{ .name = "__negti2", .linkage = common.linkage });
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}
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pub fn __negsi2(a: i32) callconv(.C) i32 {
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return negXi2(i32, a);
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}
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pub fn __negdi2(a: i64) callconv(.C) i64 {
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return negXi2(i64, a);
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}
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pub fn __negti2(a: i128) callconv(.C) i128 {
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return negXi2(i128, a);
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}
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inline fn negXi2(comptime T: type, a: T) T {
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return -a;
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}
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test {
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_ = @import("negsi2_test.zig");
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_ = @import("negdi2_test.zig");
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_ = @import("negti2_test.zig");
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}
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