IAR Embedded Workbench for Arm 9.70.xIAR C/C++ DevelopmentThe preprocessorDescription of predefined preprocessor symbols__aarch64____aarch64__In this section: DescriptionThe symbol is set to 1 if A64 is the selected instruction set in AArch64.See also‑‑aarch64, ‑‑cpu_mode, and ‑‑abi.