cmtrans

Perform transpose operations on complex matrices.

The function interface declaration is as follows:

Operations on numbers of the float type:

void (vsip_cmtrans_f)(const vsip_cmview_f *A, const vsip_cmview_f *R);

Parameters

Parameter	Description	Value Range	Input/Output
A	Pointer to the source complex matrix	The value cannot be NULL.	Input
R	Pointer to the destination complex matrix	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"

void CmtransExample()
{
    int32_t row = 4;
    int32_t col = 3;
    int64_t rowStride = 1;
    int64_t colStride = row * rowStride;
    uint64_t offset = 0;
    int32_t len = 2 * (col * colStride + offset);
    int32_t dstRow = col;
    int32_t dstCol = row;
    int64_t dstColStride = dstRow * rowStride;
    int32_t dstLen = 2 * (dstCol * dstColStride + offset);
    float *src = (float *)malloc(len * sizeof(float));
    float *dst = (float *)malloc(dstLen * sizeof(float));
    for (int32_t i = 0; i < len; ++i) {
        src[i] = 1 + i / 100.0f;
    }

    vsip_cblock_f *block_a = vsip_cblockbind_f(src, NULL, len, VSIP_MEM_NONE);
    vsip_cblock_f *block_r = vsip_cblockbind_f(dst, NULL, dstLen, VSIP_MEM_NONE);

    vsip_cmview_f *a = vsip_cmbind_f(block_a, offset, colStride, col, rowStride, row);
    vsip_cblockadmit_f(block_a, VSIP_TRUE);
    vsip_cmview_f *r = vsip_cmbind_f(block_r, offset, dstColStride, dstCol, rowStride, dstRow);
    vsip_cblockadmit_f(block_r, VSIP_TRUE);

    vsip_cmtrans_f(a, r);

    vsip_cmalldestroy_f(a);
    vsip_cmalldestroy_f(r);

    printf("src:\n");
    for (int32_t i = 0; i < col; ++i) {
        for (int32_t j = 0; j < row; ++j) {
            printf("%.5f ", src[i * row * 2 + j * 2]);
            printf("%.5f    ", src[i * row * 2 + j * 2 + 1]);
        }
        printf("\n");
    }
    printf("\ndst:\n");
    for (int32_t i = 0; i < dstCol; ++i) {
        for (int32_t j = 0; j < dstRow; ++j) {
            printf("%.5f ", dst[i * dstRow * 2 + j * 2]);
            printf("%.5f    ", dst[i * dstRow * 2 + j * 2 + 1]);
        }
        printf("\n");
    }
    free(src);
    free(dst);
}

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

Output:

src:
1.00000 1.01000    1.02000 1.03000    1.04000 1.05000    1.06000 1.07000
1.08000 1.09000    1.10000 1.11000    1.12000 1.13000    1.14000 1.15000
1.16000 1.17000    1.18000 1.19000    1.20000 1.21000    1.22000 1.23000

dst:
1.00000 1.01000    1.08000 1.09000    1.16000 1.17000
1.02000 1.03000    1.10000 1.11000    1.18000 1.19000
1.04000 1.05000    1.12000 1.13000    1.20000 1.21000
1.06000 1.07000    1.14000 1.15000    1.22000 1.23000

Parent topic: Matrix Operation Functions