Using the GNU Compiler Collection (GCC): AArch64 Built-in Functions

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#### 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);

    unsigned long long __builtin_aarch64_get_fpcr64 ();
    void __builtin_aarch64_set_fpcr64 (unsigned long long);
    unsigned long long __builtin_aarch64_get_fpsr64 ();
    void __builtin_aarch64_set_fpsr64 (unsigned long long);