Esoteric bit operations.

runtime/vm/bigint_operations.h

 // Copyright 2012 Google Inc. All Rights Reserved.
 
 #ifndef VM_BIGINT_OPERATIONS_H_
 #define VM_BIGINT_OPERATIONS_H_
 
 #include "platform/utils.h"
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 74 matching lines @@
   static RawBigint* Divide(const Bigint& a, const Bigint& b);
   static RawBigint* Modulo(const Bigint& a, const Bigint& b);
   static RawBigint* Remainder(const Bigint& a, const Bigint& b);
 
   static RawBigint* ShiftLeft(const Bigint& bigint, intptr_t amount);
   static RawBigint* ShiftRight(const Bigint& bigint, intptr_t amount);
   static RawBigint* BitAnd(const Bigint& a, const Bigint& b);
   static RawBigint* BitOr(const Bigint& a, const Bigint& b);
   static RawBigint* BitXor(const Bigint& a, const Bigint& b);
   static RawBigint* BitNot(const Bigint& bigint);
+  static int64_t BitLength(const Bigint& bigint);
 
   static int Compare(const Bigint& a, const Bigint& b);
 
   static bool IsClamped(const Bigint& bigint) {
     intptr_t length = bigint.Length();
     return (length == 0) || (bigint.GetChunkAt(length - 1) != 0);
   }
 
  private:
   typedef Bigint::Chunk Chunk;
@@ skipping 41 matching lines @@
   static RawBigint* Copy(const Bigint& bigint);
 
   static int CountBits(Chunk digit);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(BigintOperations);
 };
 
 }  // namespace dart
 
 #endif  // VM_BIGINT_OPERATIONS_H_