1const base64 = @import("std").base64;
 2
 3export fn decode_base_64(dest_ptr: [*]u8, dest_len: usize, source_ptr: [*]const u8, source_len: usize) usize {
 4    const src = source_ptr[0..source_len];
 5    const dest = dest_ptr[0..dest_len];
 6    const base64_decoder = base64.standard.Decoder;
 7    const decoded_size = base64_decoder.calcSizeForSlice(src) catch unreachable;
 8    base64_decoder.decode(dest[0..decoded_size], src) catch unreachable;
 9    return decoded_size;
10}
11
12var x: c_int = 1234;
13export var x_ptr = &x;