1 #include <math.h> 2 3 #if __riscv_flen >= 64 4 5 double copysign(double x, double y) 6 { 7 __asm__ ("fsgnj.d %0, %1, %2" : "=f"(x) : "f"(x), "f"(y)); 8 return x; 9 } 10 11 #else 12 13 #include "../copysign.c" 14 15 #endif 16