function [ ch, seed ] = ch_uniform ( clo, chi, seed )

%% CH_UNIFORM returns a scaled pseudorandom CH.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license. 
%
%  Modified:
%
%    21 May 2008
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, character CLO, CHI, the minimum and maximum acceptable characters.
%
%    Input, integer SEED, a seed for the random number generator.
%
%    Output, character CH_UNIFORM, the randomly chosen character.
%
%    Output, integer SEED, a seed for the random number generator.
%
  if ( seed == 0 )
    fprintf ( 1, '\n' );
    fprintf ( 1, 'CH_UNIFORM - Fatal error!\n' );
    fprintf ( 1, '  Input SEED = 0!\n' );
    error ( 'CH_UNIFORM - Fatal error!' );
  end

  [ t, seed ] = r8_uniform_01 ( seed );

  ch = floor ( clo + t * ( chi + 1 - clo ) );

  ch = max ( ch, clo );
  ch = min ( ch, chi );

  return
end