Gcc/10.2.0/gcc/AArch64-Built 002din-Functions
From Get docs
Next: Alpha Built-in Functions, Up: Target Builtins [Contents][Index]
6.60.1 AArch64 Built-in Functions
These built-in functions are available for the AArch64 family of processors.
unsigned int __builtin_aarch64_get_fpcr () void __builtin_aarch64_set_fpcr (unsigned int) unsigned int __builtin_aarch64_get_fpsr () void __builtin_aarch64_set_fpsr (unsigned int)