> Macros > Argument macros

Argument macros

Argument macros create function-like macros:

Syntax

#define label(arg1, ..., argn) code

The code must fit on a single line. For multi-line macros use ‘\’ to split lines Arguments are inserted into code as text substitutions Each instance of label() will be expanded into code

Code example (arm_math.h)

#define __SIMD32(addr)        (*(__SIMD32_TYPE **) & (addr))
#define __SIMD32_CONST(addr)  ( (__SIMD32_TYPE * )   (addr))
#define _SIMD32_OFFSET(addr)  (*(__SIMD32_TYPE * )   (addr))
#define __SIMD64(addr)        (*(      int64_t **) & (addr))