/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use
 * this file except in compliance with the License. A copy of the License is
 * located at
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * FUNCTION: __tolower
 *
 * CBMC doesn't implement tolower yet, so we use this stub instead.
 */

#include <assert.h>

int __tolower(int c)
{
    if (c >= 'A' && c <= 'Z') { c = c + ('a' - 'A'); }
    return c;
}