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cvdiv

Perform division operations on complex vectors.

The function interface declaration is as follows:

Operations on numbers of the float type:

void (vsip_cvadd_f)(const vsip_cvview_f *a, const vsip_cvview_f *b, const vsip_cvview_f *r);

Parameters

Parameter

Description

Value Range

Input/Output

a

Pointer to the source complex vector

The value cannot be NULL.

Input

b

Pointer to the source complex vector

The value cannot be NULL.

Input

r

Pointer to the destination complex vector

The value cannot be NULL.

Output

Abnormal Input

When a null pointer is input, the function directly returns a result.

Example

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "kvsip.h"
#include "vsip.h"
#include "vsip_type.h"

#define BUFFER_SIZE_T 10
void CvdivExample()
{
    float src1[BUFFER_SIZE_T] = {1.64f, 1.63f, -1.09f, 0.71f, -3.20f, -0.43f, 0.41f, -4.83f, 5.36f, -4.40f};
    float src2[BUFFER_SIZE_T] = {-0.23f, 3.15f, -7.11f, 5.94f, 4.38f, 6.51f, -7.28f, -3.27f, 1.08f, 3.28f};
    float dst[BUFFER_SIZE_T];
    int64_t stride = 1;
    int64_t cvLen = BUFFER_SIZE_T / 2;
    uint64_t offset = 0;

    vsip_cblock_f *block_a = vsip_cblockbind_f(src1, NULL, cvLen, VSIP_MEM_NONE);
    vsip_cblock_f *block_b = vsip_cblockbind_f(src2, NULL, cvLen, VSIP_MEM_NONE);
    vsip_cblock_f *block_r = vsip_cblockbind_f(dst, NULL, cvLen, VSIP_MEM_NONE);

    vsip_cvview_f *a = vsip_cvbind_f(block_a, offset, stride, cvLen);
    vsip_cblockadmit_f(block_a, VSIP_TRUE);
    vsip_cvview_f *b = vsip_cvbind_f(block_b, offset, stride, cvLen);
    vsip_cblockadmit_f(block_b, VSIP_TRUE);
    vsip_cvview_f *r = vsip_cvbind_f(block_r, offset, stride, cvLen);
    vsip_cblockadmit_f(block_r, VSIP_TRUE);

    vsip_cvdiv_f(a, b, r);

    vsip_cvalldestroy_f(a);
    vsip_cvalldestroy_f(b);
    vsip_cvalldestroy_f(r);

    printf("src1:\n");
    for (int32_t i = 0; i < cvLen; ++i) {
        printf("%.4f ", src1[i * 2]);
        printf("%.4f    ", src1[i * 2 + 1]);
    }
    printf("\nsrc2:\n");
    for (int32_t i = 0; i < cvLen; ++i) {
        printf("%.4f ", src2[i * 2]);
        printf("%.4f    ", src2[i * 2 + 1]);
    }
    printf("\ndst:\n");
    for (int32_t i = 0; i < cvLen; ++i) {
        printf("%.4f ", dst[i * 2]);
        printf("%.4f    ", dst[i * 2 + 1]);
    }
    printf("\n");
}

int main(void) {
    CvdivExample();
    return 0;
}

Output:

src1:
1.6400 1.6300    -1.0900 0.7100    -3.2000 -0.4300    0.4100 -4.8300    5.3600 -4.4000
src2:
-0.2300 3.1500    -7.1100 5.9400    4.3800 6.5100    -7.2800 -3.2700    1.0800 3.2800
dst:
0.4769 -0.5555    0.1394 0.0166    -0.2731 0.3078    0.2011 0.5731    -0.7248 -1.8728