Function bitcoin_tx_input_weight

bitcoin/tx.c:896–916

Input weight */

/* Input weight */
size_t bitcoin_tx_input_weight(bool p2sh, size_t witness_weight)
{
	/* We assume < 253 witness elements */
	size_t weight = 1 + witness_weight;

	/* Input weight: txid + index + sequence */
	weight += (32 + 4 + 4) * 4;

	/* We always encode the length of the script, even if empty */
	weight += 1 * 4;

	/* P2SH variants include push of <0 <20-byte-key-hash>> */
	if (p2sh)
		weight += 23 * 4;

	/* Elements inputs have 6 bytes of blank proofs attached. */
	if (chainparams->is_elements)
		weight += 6;

	return weight;
}

size_t bitcoin_tx_input_witness_weight(enum utxotype utxotype)
{