MQL5 リファレンス行列とベクトルのメソッドOpenBLASBLAS Level 3BlasL3TrMM

BlasL3TrMM

Computes a matrix-matrix product where the input matrix A is triangular.

C = alpha*op(A) or

C = alpha*B*op(A),

where A is a triangular matrix of m-by-m size if side='L', or n-by-n size otherwise; B and C are m-by-n matrices.

BLAS function TRMM.

Computing for type matrix<double>

bool matrix::BlasL3TrMM(
ENUM_BLAS_SIDE side, // specifies side of A in the product
ENUM_BLAS_TRANS transa, // specifies option op(A)
double alpha, // scalar multiplier alpha
matrix& B, // matrix B
matrix& C // result matrix C
);

Computing for type matrix<float>

bool matrixf::BlasL3TrMM(
ENUM_BLAS_SIDE side, // specifies side of A in the product
ENUM_BLAS_TRANS transa, // specifies option op(A)
float alpha, // scalar multiplier alpha
matrixf& B, // matrix B
float beta, // scalar multiplier beta
matrix& C // result matrix C
);

Computing for type matrix<complex>

bool matrixc::BlasL3TrMM(
ENUM_BLAS_SIDE side, // specifies side of A in the product
ENUM_BLAS_TRANS transa, // specifies option op(A)
complex alpha, // scalar multiplier alpha
matrixc& B, // matrix B
matrixc& C // result matrix C
);

Computing for type matrix<complexf>

bool matrixcf::BlasL3TrMM(
ENUM_BLAS_SIDE side, // specifies side of A in the product
ENUM_BLAS_TRANS transa, // specifies option op(A)
complexf alpha, // scalar multiplier alpha
matrixcf& B, // matrix B
complexf beta, // scalar multiplier beta
matrixcf& C // result matrix C
);

Parameters

side

[in] Value from the ENUM_BLAS_SIDE enumeration, which specifies the side of the input matrix A in the product:

if side= 'L', then C = alpha*op(A)*B;

if side= 'R', then C = alpha*B*op(A).

transa

[in] Value from the ENUM_BLAS_TRANS enumeration, which specifies the operation:

if transa= 'N', then op(A) = A;

if transa= 'T', then op(A) = A**T;

if transa= 'C', then op(A) = A**H.

[in] Matrix B of size m-by-n.

[out] Result matrix C of size m-by-n.

Return Value

Return true if successful, otherwise false in case of an error.

Note

The input can be upper triangular or lower triangular matrix.

ENUM_BLAS_SIDE

An enumeration defining the side of the input matrix A in the product.

ID	Description
BLASSIDE_L	'L': Left side
BLASSIDE_R	'R': Right side

ENUM_BLAS_TRANS

An enumeration defining option op(A).

ID	Description
BLASTRANS_N	'N': No transpose
BLASTRANS_T	'T': Transpose
BLASTRANS_C	'C': Conjugate transpose

BlasL3HeMM

BlasL3SyRK