=proto
void duk_base64_decode(duk_context *ctx, int index);

=stack
[ ... base64_val! ... ] -> [ ... val! ... ]

=summary
<p>Decodes a base-64 encoded value into a buffer as an in-place operation.
If the input is invalid, throws an error.</p>

=example
duk_push_string(ctx, "Zm9v");
duk_base64_decode(ctx, -1);  /* buffer */
printf("base-64 decoded: %s\n", duk_to_string(ctx, -1));
duk_pop(ctx);

/* Output:
 * base-64 decoded: foo
 */

=tags
codec

=seealso
duk_base64_encode