Zig 0.17.0-dev (Split by item)

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memccpy

string.memccpy

fn memccpy(noalias dst: *anyopaque, noalias src: *const anyopaque, value: c_int, len: usize) callconv(.c) *anyopaque

File

lib/c/string.zig:277

Code

fn memccpy(noalias dst: *anyopaque, noalias src: *const anyopaque, value: c_int, len: usize) callconv(.c) *anyopaque {
    const dst_bytes: [*]u8 = @ptrCast(dst);
    const src_bytes: [*]const u8 = @ptrCast(src);
    const value_u8: u8 = @truncate(@as(c_uint, @bitCast(value)));
    const copying_len = std.mem.findScalar(u8, src_bytes[0..len], value_u8) orelse len;
    @memcpy(dst_bytes[0..copying_len], src_bytes[0..copying_len]);
    return dst_bytes + copying_len;
}