1 /* 2 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"). 5 * You may not use this file except in compliance with the License. 6 * A copy of the License is located at 7 * 8 * http://aws.amazon.com/apache2.0 9 * 10 * or in the "license" file accompanying this file. This file is distributed 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 12 * express or implied. See the License for the specific language governing 13 * permissions and limitations under the License. 14 */ 15 #pragma once 16 17 /* bit operations on a char[] mask of arbitrary length */ 18 #define S2N_CBIT_BIT(bit) (1 << ((bit) % 8)) 19 #define S2N_CBIT_BIN(mask, bit) (mask)[(bit) >> 3] 20 #define S2N_CBIT_SET(mask, bit) ((void)(S2N_CBIT_BIN(mask, bit) |= S2N_CBIT_BIT(bit))) 21 #define S2N_CBIT_CLR(mask, bit) ((void)(S2N_CBIT_BIN(mask, bit) &= ~S2N_CBIT_BIT(bit))) 22 #define S2N_CBIT_TEST(mask, bit) ((S2N_CBIT_BIN(mask, bit) & S2N_CBIT_BIT(bit)) != 0) 23