Hier ist die Sache, wie kann ich zwei unsigned Char-Arrays hinzufügen und speichern Sie das Ergebnis in einem unsigned kurzen Array mit SSE. Kann mir jemand Hilfe oder Hinweise geben? Das habe ich bisher gemacht. Ich weiß nur nicht, wo der Fehler etwas Hilfe is..needSSE-Addition und Konvertierung
#include<iostream>
#include<intrin.h>
#include<windows.h>
#include<emmintrin.h>
#include<iterator>
using namespace std;
void sse_add(unsigned char * input1, unsigned char *input2, unsigned short *output, const int N)
{
unsigned char *op3 = new unsigned char[N];
unsigned char *op4 = new unsigned char[N];
__m128i *sse_op3 = (__m128i*)op3;
__m128i *sse_op4 = (__m128i*)op4;
__m128i *sse_result = (__m128i*)output;
for (int i = 0; i < N; i = i + 16)
{
__m128i src = _mm_loadu_si128((__m128i*)input1);
__m128i zero = _mm_setzero_si128();
__m128i higher = _mm_unpackhi_epi8(src, zero);
__m128i lower = _mm_unpacklo_epi8(src, zero);
_mm_storeu_si128(sse_op3, lower);
sse_op3 = sse_op3 + 1;
_mm_storeu_si128(sse_op3, higher);
sse_op3 = sse_op3 + 1;
input1 = input1 + 16;
}
for (int j = 0; j < N; j = j + 16)
{
__m128i src1 = _mm_loadu_si128((__m128i*)input2);
__m128i zero1 = _mm_setzero_si128();
__m128i higher1 = _mm_unpackhi_epi8(src1, zero1);
__m128i lower1 = _mm_unpacklo_epi8(src1, zero1);
_mm_storeu_si128(sse_op4, lower1);
sse_op4 = sse_op4 + 1;
_mm_storeu_si128(sse_op4, higher1);
sse_op4 = sse_op4 + 1;
input2 = input2 + 16;
}
__m128i *sse_op3_new = (__m128i*)op3;
__m128i *sse_op4_new = (__m128i*)op4;
for (int y = 0; y < N; y = y + 8)
{
*sse_result = _mm_adds_epi16(*sse_op3_new, *sse_op4_new);
sse_result = sse_result + 1;
sse_op3_new = sse_op3_new + 1;
sse_op4_new = sse_op4_new + 1;
}
}
void C_add(unsigned char * input1, unsigned char *input2, unsigned short *output, int N)
{
for (int i = 0; i < N; i++)
output[i] = (unsigned short)input1[i] + (unsigned short)input2[i];
}
int main()
{
int n = 1023;
unsigned char *p0 = new unsigned char[n];
unsigned char *p1 = new unsigned char[n];
unsigned short *p21 = new unsigned short[n];
unsigned short *p22 = new unsigned short[n];
for (int j = 0; j < n; j++)
{
p21[j] = rand() % 256;
p22[j] = rand() % 256;
}
C_add(p0, p1, p22, n);
cout << "C_add finished!" << endl;
sse_add(p0, p1, p21, n);
cout << "sse_add finished!" << endl;
for (int j = 0; j < n; j++)
{
if (p21[j] != p22[j])
{
cout << "[email protected]@@@@@@" << endl;
}
}
//system("pause");
delete[] p0;
delete[] p1;
delete[] p21;
delete[] p22;
return 0;
}
Vielen Dank, ich habe meinen Code geschrieben ... es gibt einen Fehler (Breakpoint), wenn ich es ausführen, wirklich verwirrt .. –