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What does "##" mean in a macro? (Concatenation) http://forum.andestech.com/viewtopic.php?f=25&t=935 |
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Author: | ianfeng [ Mon Sep 14, 2015 3:16 pm ] |
Post subject: | What does "##" mean in a macro? (Concatenation) |
We may see "##" in Andes demo project, such as below line. Code: #define HW_ISR(n) HW##n##_ISR What does it mean? The ‘##’ preprocessing operator performs token pasting. For detail information, please refer following website. https://gcc.gnu.org/onlinedocs/cpp/Concatenation.html |
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