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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

platform/mbed_preprocessor.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
161:aa5281ff4a02 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 130:d75b3fe1f5cb 1 /** \addtogroup platform */
<> 130:d75b3fe1f5cb 2 /** @{*/
AnnaBridge 158:1c57384330a6 3 /**
AnnaBridge 158:1c57384330a6 4 * \defgroup platform_preprocessor preprocessor macros
AnnaBridge 158:1c57384330a6 5 * @{
AnnaBridge 158:1c57384330a6 6 */
AnnaBridge 158:1c57384330a6 7
<> 130:d75b3fe1f5cb 8 /* mbed Microcontroller Library
<> 130:d75b3fe1f5cb 9 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 172:65be27845400 10 * SPDX-License-Identifier: Apache-2.0
<> 130:d75b3fe1f5cb 11 *
<> 130:d75b3fe1f5cb 12 * Licensed under the Apache License, Version 2.0 (the "License");
<> 130:d75b3fe1f5cb 13 * you may not use this file except in compliance with the License.
<> 130:d75b3fe1f5cb 14 * You may obtain a copy of the License at
<> 130:d75b3fe1f5cb 15 *
<> 130:d75b3fe1f5cb 16 * http://www.apache.org/licenses/LICENSE-2.0
<> 130:d75b3fe1f5cb 17 *
<> 130:d75b3fe1f5cb 18 * Unless required by applicable law or agreed to in writing, software
<> 130:d75b3fe1f5cb 19 * distributed under the License is distributed on an "AS IS" BASIS,
<> 130:d75b3fe1f5cb 20 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 130:d75b3fe1f5cb 21 * See the License for the specific language governing permissions and
<> 130:d75b3fe1f5cb 22 * limitations under the License.
<> 130:d75b3fe1f5cb 23 */
<> 130:d75b3fe1f5cb 24 #ifndef MBED_PREPROCESSOR_H
<> 130:d75b3fe1f5cb 25 #define MBED_PREPROCESSOR_H
<> 130:d75b3fe1f5cb 26
<> 130:d75b3fe1f5cb 27
<> 130:d75b3fe1f5cb 28 /** MBED_CONCAT
<> 130:d75b3fe1f5cb 29 * Concatenate tokens together
<> 130:d75b3fe1f5cb 30 *
<> 130:d75b3fe1f5cb 31 * @note
<> 130:d75b3fe1f5cb 32 * Expands tokens before concatenation
<> 130:d75b3fe1f5cb 33 *
<> 130:d75b3fe1f5cb 34 * @code
<> 130:d75b3fe1f5cb 35 * // Creates a unique label based on the line number
<> 130:d75b3fe1f5cb 36 * int MBED_CONCAT(UNIQUE_LABEL_, __LINE__) = 1;
<> 130:d75b3fe1f5cb 37 * @endcode
<> 130:d75b3fe1f5cb 38 */
<> 130:d75b3fe1f5cb 39 #define MBED_CONCAT(a, b) MBED_CONCAT_(a, b)
<> 130:d75b3fe1f5cb 40 #define MBED_CONCAT_(a, b) a##b
<> 130:d75b3fe1f5cb 41
<> 130:d75b3fe1f5cb 42 /** MBED_STRINGIFY
<> 130:d75b3fe1f5cb 43 * Converts tokens into strings
<> 130:d75b3fe1f5cb 44 *
<> 130:d75b3fe1f5cb 45 * @note
<> 130:d75b3fe1f5cb 46 * Expands tokens before stringification
<> 130:d75b3fe1f5cb 47 *
<> 130:d75b3fe1f5cb 48 * @code
<> 130:d75b3fe1f5cb 49 * // Creates a string based on the parameters
<> 130:d75b3fe1f5cb 50 * const char *c = MBED_STRINGIFY(This is a ridiculous way to create a string)
<> 130:d75b3fe1f5cb 51 * @endcode
<> 130:d75b3fe1f5cb 52 */
<> 130:d75b3fe1f5cb 53 #define MBED_STRINGIFY(a) MBED_STRINGIFY_(a)
<> 130:d75b3fe1f5cb 54 #define MBED_STRINGIFY_(a) #a
<> 130:d75b3fe1f5cb 55
AnnaBridge 161:aa5281ff4a02 56 /** MBED_STRLEN
AnnaBridge 161:aa5281ff4a02 57 * Reports string token length
AnnaBridge 161:aa5281ff4a02 58 *
AnnaBridge 161:aa5281ff4a02 59 * @note
AnnaBridge 161:aa5281ff4a02 60 * Expands tokens before calculating length
AnnaBridge 161:aa5281ff4a02 61 *
AnnaBridge 161:aa5281ff4a02 62 * @code
AnnaBridge 161:aa5281ff4a02 63 * // Get string length
AnnaBridge 161:aa5281ff4a02 64 * const int len = MBED_STRLEN("Get the length")
AnnaBridge 161:aa5281ff4a02 65 * @endcode
AnnaBridge 161:aa5281ff4a02 66 */
AnnaBridge 161:aa5281ff4a02 67 #define MBED_STRLEN(a) MBED_STRLEN_(a)
AnnaBridge 161:aa5281ff4a02 68 #define MBED_STRLEN_(a) (sizeof(a) - 1)
AnnaBridge 161:aa5281ff4a02 69
AnnaBridge 161:aa5281ff4a02 70 /** MBED_COUNT_VA_ARGS(...)
AnnaBridge 161:aa5281ff4a02 71 * Reports number of tokens passed
AnnaBridge 161:aa5281ff4a02 72 *
AnnaBridge 161:aa5281ff4a02 73 * @note
AnnaBridge 161:aa5281ff4a02 74 * Token limit is 16
AnnaBridge 161:aa5281ff4a02 75 *
AnnaBridge 161:aa5281ff4a02 76 * @code
AnnaBridge 161:aa5281ff4a02 77 * // Get number of arguments
AnnaBridge 161:aa5281ff4a02 78 * const int count = MBED_COUNT_VA_ARGS("Address 0x%x, Data[0] = %d Data[1] = %d", 0x20001234, 10, 20)
AnnaBridge 161:aa5281ff4a02 79 * @endcode
AnnaBridge 161:aa5281ff4a02 80 */
AnnaBridge 161:aa5281ff4a02 81 #define MBED_COUNT_VA_ARGS(...) GET_NTH_ARG_(__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1)
AnnaBridge 161:aa5281ff4a02 82 #define GET_NTH_ARG_(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, N, ...) N
<> 130:d75b3fe1f5cb 83
<> 130:d75b3fe1f5cb 84 #endif
<> 130:d75b3fe1f5cb 85
<> 130:d75b3fe1f5cb 86 /** @}*/
AnnaBridge 158:1c57384330a6 87 /** @}*/