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* Introduce common `bzero` libc implementation. * Update test name according to review Co-authored-by: Linus Groh <mail@linusgroh.de> * address code review - import common implementation when musl or wasi is included - don't use `c_builtins`, use `@memset` * bzero calling conv to .c * Apply review Co-authored-by: Veikka Tuominen <git@vexu.eu> --------- Co-authored-by: Linus Groh <mail@linusgroh.de> Co-authored-by: Veikka Tuominen <git@vexu.eu>
19 lines
549 B
Zig
19 lines
549 B
Zig
const std = @import("std");
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const common = @import("common.zig");
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comptime {
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@export(&bzero, .{ .name = "bzero", .linkage = common.linkage, .visibility = common.visibility });
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}
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fn bzero(s: *anyopaque, n: usize) callconv(.c) void {
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const s_cast: [*]u8 = @ptrCast(s);
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@memset(s_cast[0..n], 0);
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}
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test bzero {
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var array: [10]u8 = [_]u8{ '1', '2', '3', '4', '5', '6', '7', '8', '9', '0' };
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var a = std.mem.zeroes([array.len]u8);
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a[9] = '0';
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bzero(&array[0], 9);
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try std.testing.expect(std.mem.eql(u8, &array, &a));
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}
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