static double numberOfDigits ( double n ) {
  if ( n == 1 ) return 1 ;
  double d = ( n * Math . log10 ( 1.6180339887498948 ) ) - ( ( Math . log10 ( 5 ) ) / 2 ) ;
  return Math . ceil ( d ) ;
}

static double numberOfDigits ( double n ) { if ( n == 1 ) return 1 ; double d = ( n * Math . log10 ( 1.6180339887498948 ) ) - ( ( Math . log10 ( 5 ) ) / 2 ) ; return Math . ceil ( d ) ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (floating_point_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (decimal_integer_literal))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_floating_point_literal))))) right: (parenthesized_expression (binary_expression left: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal)))) right: (decimal_integer_literal)))))) (return_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))