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stage2: export trunc, truncf and truncl

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Jakub Konka 2022-02-08 23:30:23 +01:00
parent b28e9e42e0
commit e588e3873c
1 changed files with 20 additions and 0 deletions
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20
lib/std/special/c.zig
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@ -6,7 +6,9 @@
const std = @import("std"); const std = @import("std");
const builtin = @import("builtin"); const builtin = @import("builtin");
const math = std.math;
const native_os = builtin.os.tag; const native_os = builtin.os.tag;
const long_double_is_f128 = builtin.target.longDoubleIsF128();
comptime { comptime {
// When the self-hosted compiler is further along, all the logic from c_stage1.zig will // When the self-hosted compiler is further along, all the logic from c_stage1.zig will
@ -15,6 +17,9 @@ comptime {
if (builtin.zig_backend != .stage1) { if (builtin.zig_backend != .stage1) {
@export(memset, .{ .name = "memset", .linkage = .Strong }); @export(memset, .{ .name = "memset", .linkage = .Strong });
@export(memcpy, .{ .name = "memcpy", .linkage = .Strong }); @export(memcpy, .{ .name = "memcpy", .linkage = .Strong });
@export(trunc, .{ .name = "trunc", .linkage = .Strong });
@export(truncf, .{ .name = "truncf", .linkage = .Strong });
@export(truncl, .{ .name = "truncl", .linkage = .Strong });
} else { } else {
_ = @import("c_stage1.zig"); _ = @import("c_stage1.zig");
} }
@ -74,3 +79,18 @@ fn memcpy(noalias dest: ?[*]u8, noalias src: ?[*]const u8, len: usize) callconv(
return dest; return dest;
} }
fn trunc(a: f64) f64 {
return math.trunc(a);
}
fn truncf(a: f32) f32 {
return math.trunc(a);
}
fn truncl(a: c_longdouble) c_longdouble {
if (!long_double_is_f128) {
@panic("TODO implement this");
}
return math.trunc(a);
}