1 #include <math.h> 2 3 #if __ARM_PCS_VFP || (__VFP_FP__ && !__SOFTFP__) 4 5 double sqrt(double x) 6 { 7 __asm__ ("vsqrt.f64 %P0, %P1" : "=w"(x) : "w"(x)); 8 return x; 9 } 10 11 #else 12 13 #include "../sqrt.c" 14 15 #endif 16