==== SetBit ====

Helper function to set the state of a single bit in a byte-buffer.

=== Description ===

<code>SetBit( buffer, bitno, value )</code>

Set the state of a single bit in a buffer

=== Parameters ===

| ''buf'' | Reference to the byte buffer |
| ''bitno'' | The bit number (0-indexed) |
| ''value'' | 0 or 1 (any non-zero value is considered =1) |

=== Return value ===

Returns the state of the bit (1 or 0) before it was set.

=== Example usage ===

<code javascript>    
   new buffer{80};

   SetBit(buffer, 18, 1);
</code>