Matrix multiplication

The function performs generalized matrix multiplication similar to the gemm functions in BLAS level 3: \(D = \alpha*AB+\beta*C\). More...

Collaboration diagram for Matrix multiplication:

Functions
int	hal_ni_gemm32f (const float *src1, size_t src1_step, const float *src2, size_t src2_step, float alpha, const float *src3, size_t src3_step, float beta, float *dst, size_t dst_step, int m, int n, int k, int flags)
int	hal_ni_gemm32fc (const float *src1, size_t src1_step, const float *src2, size_t src2_step, float alpha, const float *src3, size_t src3_step, float beta, float *dst, size_t dst_step, int m, int n, int k, int flags)
int	hal_ni_gemm64f (const double *src1, size_t src1_step, const double *src2, size_t src2_step, double alpha, const double *src3, size_t src3_step, double beta, double *dst, size_t dst_step, int m, int n, int k, int flags)
int	hal_ni_gemm64fc (const double *src1, size_t src1_step, const double *src2, size_t src2_step, double alpha, const double *src3, size_t src3_step, double beta, double *dst, size_t dst_step, int m, int n, int k, int flags)

Detailed Description

The function performs generalized matrix multiplication similar to the gemm functions in BLAS level 3: \(D = \alpha*AB+\beta*C\).

Parameters

src1	pointer to input \(M\times N\) matrix \(A\) or \(A^T\) stored in row major order.
src1_step	number of bytes between two consequent rows of matrix \(A\) or \(A^T\).
src2	pointer to input \(N\times K\) matrix \(B\) or \(B^T\) stored in row major order.
src2_step	number of bytes between two consequent rows of matrix \(B\) or \(B^T\).
alpha	\(\alpha\) multiplier before \(AB\)
src3	pointer to input \(M\times K\) matrix \(C\) or \(C^T\) stored in row major order.
src3_step	number of bytes between two consequent rows of matrix \(C\) or \(C^T\).
beta	\(\beta\) multiplier before \(C\)
dst	pointer to input \(M\times K\) matrix \(D\) stored in row major order.
dst_step	number of bytes between two consequent rows of matrix \(D\).
m	number of rows in matrix \(A\) or \(A^T\), equals to number of rows in matrix \(D\)
n	number of columns in matrix \(A\) or \(A^T\)
k	number of columns in matrix \(B\) or \(B^T\), equals to number of columns in matrix \(D\)
flags	algorithm options (combination of CV_HAL_GEMM_1_T, ...).

Function Documentation

hal_ni_gemm32f()

int hal_ni_gemm32f ( const float *  src1, size_t  src1_step, const float *  src2, size_t  src2_step, float  alpha, const float *  src3, size_t  src3_step, float  beta, float *  dst, size_t  dst_step, int  m, int  n, int  k, int  flags  )

inline

#include <core/src/hal_replacement.hpp>

Referenced by hal_ni_QR64f().

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hal_ni_gemm32fc()

int hal_ni_gemm32fc ( const float *  src1, size_t  src1_step, const float *  src2, size_t  src2_step, float  alpha, const float *  src3, size_t  src3_step, float  beta, float *  dst, size_t  dst_step, int  m, int  n, int  k, int  flags  )

inline

#include <core/src/hal_replacement.hpp>

References CV_HAL_ERROR_NOT_IMPLEMENTED.

hal_ni_gemm64f()

int hal_ni_gemm64f ( const double *  src1, size_t  src1_step, const double *  src2, size_t  src2_step, double  alpha, const double *  src3, size_t  src3_step, double  beta, double *  dst, size_t  dst_step, int  m, int  n, int  k, int  flags  )

inline

#include <core/src/hal_replacement.hpp>

References CV_HAL_ERROR_NOT_IMPLEMENTED.

hal_ni_gemm64fc()

int hal_ni_gemm64fc ( const double *  src1, size_t  src1_step, const double *  src2, size_t  src2_step, double  alpha, const double *  src3, size_t  src3_step, double  beta, double *  dst, size_t  dst_step, int  m, int  n, int  k, int  flags  )

inline

#include <core/src/hal_replacement.hpp>

References CV_HAL_ERROR_NOT_IMPLEMENTED.