Add Random::nextBlob

Subtrees/beast/modules/beast_core/maths/beast_Random.cpp

@@ -98,6 +98,23 @@ double Random::nextDouble() noexcept
     return static_cast <uint32> (nextInt()) / (double) 0xffffffff;
 }
 
+void Random::nextBlob (void* buffer, size_t bytes)
+{
+    int const remainder = bytes % sizeof (int64);
+
+    {
+        int64* dest = static_cast <int64*> (buffer);
+        for (int i = bytes / sizeof (int64); i > 0; --i)
+            *dest++ = nextInt64 ();
+        buffer = dest;
+    }
+
+    {
+        int64 const val = nextInt64 ();
+        memcpy (buffer, &val, remainder);
+    }
+}
+
 BigInteger Random::nextLargeNumber (const BigInteger& maximumValue)
 {
     BigInteger n;

Subtrees/beast/modules/beast_core/maths/beast_Random.h

@@ -89,6 +89,10 @@ public:
     */
     bool nextBool() noexcept;
 
+    /** Fills a piece of memory with random data.
+    */
+    void nextBlob (void* buffer, size_t bytes);
+
     /** Returns a BigInteger containing a random number.
 
         @returns a random value in the range 0 to (maximumValue - 1).