Merge bitcoin/bitcoin#22951: consensus: move amount.h into consensus

9d0379c consensus: use <cstdint> over <stdint.h> in amount.h (fanquake)
863e52f consensus: make COIN & MAX_MONEY constexpr (fanquake)
d09071d [MOVEONLY] consensus: move amount.h into consensus (fanquake)

Pull request description:

  A first step (of a few) towards some source code reorganization, as well as making libbitcoinconsensus slightly more self contained.

  Related to #15732.

ACKs for top commit:
  MarcoFalke:
    concept ACK 9d0379c 🏝

Tree-SHA512: 97fc79262dcb8c00996852a288fee69ddf8398ae2c95700bba5b326f1f38ffcfaf8fa66e29d0cb446d9b3f4e608a96525fae0c2ad9cd531ad98ad2a4a687cd6a

Author: MarcoFalke

src/Makefile.am

@@ -499,9 +499,9 @@ crypto_libbitcoin_crypto_shani_a_SOURCES = crypto/sha256_shani.cpp
 libbitcoin_consensus_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
 libbitcoin_consensus_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_consensus_a_SOURCES = \
-  amount.h \
   arith_uint256.cpp \
   arith_uint256.h \
+  consensus/amount.h \
   consensus/merkle.cpp \
   consensus/merkle.h \
   consensus/params.h \

src/bitcoin-tx.cpp

@@ -8,6 +8,7 @@
 
 #include <clientversion.h>
 #include <coins.h>
+#include <consensus/amount.h>
 #include <consensus/consensus.h>
 #include <core_io.h>
 #include <key_io.h>

src/amount.h renamed to src/consensus/amount.h

@@ -3,15 +3,15 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef BITCOIN_AMOUNT_H
-#define BITCOIN_AMOUNT_H
+#ifndef BITCOIN_CONSENSUS_AMOUNT_H
+#define BITCOIN_CONSENSUS_AMOUNT_H
 
-#include <stdint.h>
+#include <cstdint>
 
 /** Amount in satoshis (Can be negative) */
 typedef int64_t CAmount;
 
-static const CAmount COIN = 100000000;
+static constexpr CAmount COIN = 100000000;
 
 /** No amount larger than this (in satoshi) is valid.
  *
@@ -22,7 +22,7 @@ static const CAmount COIN = 100000000;
  * critical; in unusual circumstances like a(nother) overflow bug that allowed
  * for the creation of coins out of thin air modification could lead to a fork.
  * */
-static const CAmount MAX_MONEY = 21000000 * COIN;
+static constexpr CAmount MAX_MONEY = 21000000 * COIN;
 inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
 
-#endif //  BITCOIN_AMOUNT_H
+#endif //  BITCOIN_CONSENSUS_AMOUNT_H

src/consensus/tx_check.cpp

@@ -4,6 +4,7 @@
 
 #include <consensus/tx_check.h>
 
+#include <consensus/amount.h>
 #include <primitives/transaction.h>
 #include <consensus/validation.h>
 

src/consensus/tx_verify.cpp

@@ -4,6 +4,7 @@
 
 #include <consensus/tx_verify.h>
 
+#include <consensus/amount.h>
 #include <consensus/consensus.h>
 #include <primitives/transaction.h>
 #include <script/interpreter.h>

src/consensus/tx_verify.h

@@ -5,7 +5,7 @@
 #ifndef BITCOIN_CONSENSUS_TX_VERIFY_H
 #define BITCOIN_CONSENSUS_TX_VERIFY_H
 
-#include <amount.h>
+#include <consensus/amount.h>
 
 #include <stdint.h>
 #include <vector>

src/core_io.h

@@ -5,7 +5,7 @@
 #ifndef BITCOIN_CORE_IO_H
 #define BITCOIN_CORE_IO_H
 
-#include <amount.h>
+#include <consensus/amount.h>
 #include <attributes.h>
 
 #include <string>

src/core_write.cpp

@@ -4,6 +4,7 @@
 
 #include <core_io.h>
 
+#include <consensus/amount.h>
 #include <consensus/consensus.h>
 #include <consensus/validation.h>
 #include <key_io.h>

src/init.cpp

@@ -10,12 +10,12 @@
 #include <init.h>
 
 #include <addrman.h>
-#include <amount.h>
 #include <banman.h>
 #include <blockfilter.h>
 #include <chain.h>
 #include <chainparams.h>
 #include <compat/sanity.h>
+#include <consensus/amount.h>
 #include <deploymentstatus.h>
 #include <fs.h>
 #include <hash.h>

src/interfaces/node.h

@@ -5,7 +5,7 @@
 #ifndef BITCOIN_INTERFACES_NODE_H
 #define BITCOIN_INTERFACES_NODE_H
 
-#include <amount.h>     // For CAmount
+#include <consensus/amount.h>
 #include <external_signer.h>
 #include <net.h>        // For NodeId
 #include <net_types.h>  // For banmap_t