5.vstn 将向量的值按 n 路交织存放到内存中, 比如有int8x8x3_t的数组向量, 那么将按照int8x8x3_t.val[0][0], int8x8x3_t.val[1][0], int8x8x3_t.val[2][0], int8x8x3_t.val[0][1], int8x8x3_t.val[1][1], int8x8x3_t.val[2][1]这样的顺序存入内存 int8x8x3_t vst...
void add_float_neon1(float* dst,float* src1,float* src2, int count) { int i; for(i = 0; i < count; i += 4) { float32x4_t in1, in2, out; in1 = vld1q_f32(src1); src1 += 4; in2 = vld1q_f32(src2); src2 += 4...
typedef __builtin_neon_si int32x2_t __attribute__ ((__vector_size__ (8))); typedef __builtin_neon_di int64x1_t; typedef __builtin_neon_sf float32x2_t __attribute__ ((__vector_size__ (8))); typedef __builtin_neon_poly8 poly8x8_t __attribute__ ((__vector_size__ (8...
void add_float_neon1(float* dst, float* src1, float* src2, int count) { int i; for (i = 0; i < count; i += 4) { float32x4_t in1, in2, out; in1 = vld1q_f32(src1); src1 += 4; in2 = vld1q_f32(src2); src2 += 4; out = vaddq_f32(in1, in2); vst1...
float32x4x3_t f = vld3q_f32 (d5); 1. 2. 3. 4. 6.vst3q_f32 vst3q_f32 (d5, f); 1. 7.vld4q_f32, vst4q_f32 略 二、特殊操作 1.vdupq_n_f32 float32x4_t res = vdupq_n_f32(0.f); // 存储的四个 float32 都初始化为 0 ...
}float32x2x3_t;typedefstructfloat32x4x3_t{float32x4_tval[3]; }float32x4x3_t;typedefstructpoly8x8x3_t{poly8x8_tval[3]; }poly8x8x3_t;typedefstructpoly8x16x3_t{poly8x16_tval[3]; }poly8x16x3_t;typedefstructpoly16x4x3_t{poly16x4_tval[3]; ...
// a乘b的结果扩大一倍, 最后做饱和操作 int32x4_t vqdmull_s16(int16x4_t a, int16x4_t b); r:表示舍入计算,例如 // 将a与b的和减半,同时做rounding 操作, 每个通道可以表达为: (ai + bi + 1) >> 1 int8x8_t vrhadd_s8(int8x8_t a, int8x8_t b); p:表示pairwise计算。例如 ...
vst2q_f32(d4, ret); 注意,由于寄存器是交错存储的,所以内存保持不变! 5.vld3q_f32 floatd5[12]={1.f,2.f,3.f,4.f,5.f,6.f,7.f,8.f,9.f,10.f,11.f,12.f};float32x4x3_t f=vld3q_f32(d5); 6.vst3q_f32 vst3q_f32(d5,f); ...
typedef __builtin_neon_sf float32x4_t __attribute__ ((__vector_size__ (16))); //poly8以及poly16类型在常用算法中基本不会使用 //详细解释见: //http://stackoverflow.com/questions/22224282/arm-neon-and-poly8-t-and-poly16-t typedef __builtin_neon_poly8 poly8x16_t __attribute__ (...
//typedef float16_t[4] float16x4_t; //(注:该类型为半精度,在部分新的CPU上支持,c/c++语言标注中尚无此基本数据类型) typedef __builtin_neon_hf float16x4_t __attribute__ ((__vector_size__ (8))); //typedef float32_t[2] float32x2_t; ...