目录

◆ AKSIMD_SUB_SS_V4F32

#define AKSIMD_SUB_SS_V4F32 (   __a__,
  __b__ 
)    vsubq_f32( (__a__), vsetq_lane_f32( AKSIMD_GETELEMENT_V4F32( (__b__), 0 ), AKSIMD_SETZERO_V4F32(), 0 ) );

Subtracts the lower single-precision, floating-point values of a and b. The upper three single-precision, floating-point values are passed through from a. r0 := a0 - b0 ; r1 := a1 ; r2 := a2 ; r3 := a3 (see _mm_sub_ss)

在文件 AkSimd.h 第 353 行定义.