These built-in functions are available for the ARM family of processors with floating-point unit.
unsigned int __builtin_arm_get_fpscr () void __builtin_arm_set_fpscr (unsigned int)
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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-11.1.0/gcc/ARM-Floating-Point-Status-and-Control-Intrinsics.html