From 663fbae7776b0c238f6f27d73811b4bc627d0b6b Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 15 Feb 2017 17:56:54 -0800
Subject: [PATCH] FastRandom benchmark

---
 src/bench/crypto_hash.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/bench/crypto_hash.cpp b/src/bench/crypto_hash.cpp
index 737d3572a..5257e60e8 100644
--- a/src/bench/crypto_hash.cpp
+++ b/src/bench/crypto_hash.cpp
@@ -7,6 +7,7 @@
 #include "bench.h"
 #include "bloom.h"
 #include "hash.h"
+#include "random.h"
 #include "uint256.h"
 #include "utiltime.h"
 #include "crypto/ripemd160.h"
@@ -69,6 +70,28 @@ static void SipHash_32b(benchmark::State& state)
     }
 }
 
+static void FastRandom_32bit(benchmark::State& state)
+{
+    FastRandomContext rng(true);
+    uint32_t x;
+    while (state.KeepRunning()) {
+        for (int i = 0; i < 1000000; i++) {
+            x += rng.rand32();
+        }
+    }
+}
+
+static void FastRandom_1bit(benchmark::State& state)
+{
+    FastRandomContext rng(true);
+    uint32_t x;
+    while (state.KeepRunning()) {
+        for (int i = 0; i < 1000000; i++) {
+            x += rng.randbool();
+        }
+    }
+}
+
 BENCHMARK(RIPEMD160);
 BENCHMARK(SHA1);
 BENCHMARK(SHA256);
@@ -76,3 +99,5 @@ BENCHMARK(SHA512);
 
 BENCHMARK(SHA256_32b);
 BENCHMARK(SipHash_32b);
+BENCHMARK(FastRandom_32bit);
+BENCHMARK(FastRandom_1bit);