Modern C

Chapter 16. Function-like macros

This chapter covers

• Checking arguments
• Accessing the calling context
• Working with variadic macros
• Type-generic programming

We have encountered function-like macros explicitly in section 10.2.1 and also implicitly. Some interfaces in the C standard library are typically implemented by using them, such as the type-generic interfaces in tgmath.h. We also have seen that function-like macros can easily obfuscate our code and require a certain restrictive set of rules. The easiest strategy to avoid many of the problems that come with function-like macros is to only use them where they are irreplaceable, and to use appropriate means where they are replaceable.

<tgmath.h>

Takeaway 16.1 ...