57 unsigned int num_points)
59 const unsigned int num_bytes = num_points * 2;
63 int bound = (num_bytes >> 4);
64 int bound_copy = bound;
65 int leftovers = (num_bytes >> 1) & 7;
67 __m128i *p_target, *p_src0, *p_src1, *p_src2, *p_src3;
74 __m128i xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
76 while (bound_copy > 0) {
125 for (
i = bound * 8;
i < (bound * 8) + leftovers; ++
i) {
126 temp0 = ((short)(src0[
i] - src1[
i]) > 0) ? src0[
i] : src1[
i];
127 temp1 = ((short)(src2[
i] - src3[
i]) > 0) ? src2[
i] : src3[
i];
128 target[
i] = ((short)(temp0 - temp1) > 0) ? temp0 : temp1;
144 unsigned int num_points)
146 const unsigned int eighth_points = num_points / 8;
149 int16x8_t src0_vec, src1_vec, src2_vec, src3_vec;
150 int16x8_t diff12, diff34;
151 int16x8_t comp0, comp1, comp2, comp3;
152 int16x8_t result1_vec, result2_vec;
154 zeros = vdupq_n_s16(0);
155 for (
i = 0;
i < eighth_points; ++
i) {
156 src0_vec = vld1q_s16(src0);
157 src1_vec = vld1q_s16(src1);
158 src2_vec = vld1q_s16(src2);
159 src3_vec = vld1q_s16(src3);
160 diff12 = vsubq_s16(src0_vec, src1_vec);
161 diff34 = vsubq_s16(src2_vec, src3_vec);
162 comp0 = (int16x8_t)vcgeq_s16(diff12, zeros);
163 comp1 = (int16x8_t)vcltq_s16(diff12, zeros);
164 comp2 = (int16x8_t)vcgeq_s16(diff34, zeros);
165 comp3 = (int16x8_t)vcltq_s16(diff34, zeros);
166 comp0 = vandq_s16(src0_vec, comp0);
167 comp1 = vandq_s16(src1_vec, comp1);
168 comp2 = vandq_s16(src2_vec, comp2);
169 comp3 = vandq_s16(src3_vec, comp3);
171 result1_vec = vaddq_s16(comp0, comp1);
172 result2_vec = vaddq_s16(comp2, comp3);
174 diff12 = vsubq_s16(result1_vec, result2_vec);
175 comp0 = (int16x8_t)vcgeq_s16(diff12, zeros);
176 comp1 = (int16x8_t)vcltq_s16(diff12, zeros);
177 comp0 = vandq_s16(result1_vec, comp0);
178 comp1 = vandq_s16(result2_vec, comp1);
179 result1_vec = vaddq_s16(comp0, comp1);
180 vst1q_s16(target, result1_vec);
190 for (
i = eighth_points * 8;
i < num_points; ++
i) {
191 temp0 = ((short)(*src0 - *src1) > 0) ? *src0 : *src1;
192 temp1 = ((short)(*src2 - *src3) > 0) ? *src2 : *src3;
193 *target++ = ((short)(temp0 - temp1) > 0) ? temp0 : temp1;
static void volk_16i_x4_quad_max_star_16i_generic(short *target, short *src0, short *src1, short *src2, short *src3, unsigned int num_points)
Definition volk_16i_x4_quad_max_star_16i.h:204
static void volk_16i_x4_quad_max_star_16i_neon(short *target, short *src0, short *src1, short *src2, short *src3, unsigned int num_points)
Definition volk_16i_x4_quad_max_star_16i.h:139
static void volk_16i_x4_quad_max_star_16i_a_sse2(short *target, short *src0, short *src1, short *src2, short *src3, unsigned int num_points)
Definition volk_16i_x4_quad_max_star_16i.h:52