E.3.10. 倒数/平方根

近似倒数/步进和 1/近似平方根/步进


float32x2_t vrecps_f32(float32x2_t a, float32x2_t b);   // VRECPS.F32 d0, d0, d0 

float32x4_t vrecpsq_f32(float32x4_t a, float32x4_t b);  // VRECPS.F32 q0, q0, q0 

float32x2_t vrsqrts_f32(float32x2_t a, float32x2_t b);  // VRSQRTS.F32 d0, d0, d0

float32x4_t vrsqrtsq_f32(float32x4_t a, float32x4_t b); // VRSQRTS.F32 q0, q0, q0

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