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ios::bitalloc

Usage

   #include <iostream.hpp>
   static long ios::bitalloc();

Description

   In stream classes derived from class ios, and in code providing inserters
   for user defined types it may be desired to introduce extra format flag
   type information. The bitalloc function provides the capability to extend
   class ios in this way. It returns a long integer with one previously
   unused bit set.

Example 

   long ext_format_bit = ios::bitalloc();

   cout.setf(ext_format_bit);

Return Value

   Returns a long with one previously unallocated bit set, or zero if no
   further format bits are available.