random.h

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// Copyright (c) 2023 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_TEST_UTIL_RANDOM_H
#define BITCOIN_TEST_UTIL_RANDOM_H
 
#include <consensus/amount.h>
#include <random.h>
#include <uint256.h>
 
#include <cstdint>
 
extern FastRandomContext g_insecure_rand_ctx;
 
extern bool g_mock_deterministic_tests;
 
enum class SeedRand {
    ZEROS, 
    SEED,  
};
 
void Seed(FastRandomContext& ctx);
 
static inline void SeedInsecureRand(SeedRand seed = SeedRand::SEED)
{
    if (seed == SeedRand::ZEROS) {
        g_insecure_rand_ctx = FastRandomContext(/*fDeterministic=*/true);
    } else {
        Seed(g_insecure_rand_ctx);
    }
}
 
static inline uint32_t InsecureRand32()
{
    return g_insecure_rand_ctx.rand32();
}
 
static inline uint256 InsecureRand256()
{
    return g_insecure_rand_ctx.rand256();
}
 
static inline uint64_t InsecureRandBits(int bits)
{
    return g_insecure_rand_ctx.randbits(bits);
}
 
static inline uint64_t InsecureRandRange(uint64_t range)
{
    return g_insecure_rand_ctx.randrange(range);
}
 
static inline bool InsecureRandBool()
{
    return g_insecure_rand_ctx.randbool();
}
 
static inline CAmount InsecureRandMoneyAmount()
{
    return static_cast<CAmount>(InsecureRandRange(MAX_MONEY + 1));
}
 
#endif // BITCOIN_TEST_UTIL_RANDOM_H