include?

/*
 *  call-seq:
 *     str.include? other_str   => true or false
 *     str.include? fixnum      => true or false
 *  
 *  Returns <code>true</code> if <i>str</i> contains the given string or
 *  character.
 *     
 *     "hello".include? "lo"   #=> true
 *     "hello".include? "ol"   #=> false
 *     "hello".include? ?h     #=> true
 */

static VALUE
rb_str_include(str, arg)
    VALUE str, arg;
{
    long i;

    if (FIXNUM_P(arg)) {
        if (memchr(RSTRING(str)->ptr, FIX2INT(arg), RSTRING(str)->len))
            return Qtrue;
        return Qfalse;
    }

    StringValue(arg);
    i = rb_str_index(str, arg, 0);

    if (i == -1) return Qfalse;
    return Qtrue;
}