/**
* C++ version of gsl_blas_zhemm().
* @param Side Side to apply operation to
* @param Uplo Upper or lower triangular
* @param alpha A constant
* @param A A matrix
* @param B Another matrix
* @param beta Another constant
* @param C Another matrix
* @return Error code on failure
*/
int zhemm( CBLAS_SIDE_t Side, CBLAS_UPLO_t Uplo, complex const& alpha,
matrix_complex const& A, matrix_complex const& B, complex const& beta,
matrix_complex& C ){
return gsl_blas_zhemm( Side, Uplo, alpha.get(), A.get(), B.get(), beta.get(), C.get() ); }
static VALUE rb_gsl_blas_zhemm(int argc, VALUE *argv, VALUE obj)
{
gsl_matrix_complex *A = NULL, *B = NULL, *C = NULL;
gsl_complex alpha, beta, *pa = &alpha, *pb = β
CBLAS_SIDE_t Side;
CBLAS_UPLO_t Uplo;
int flag = 0;
alpha = gsl_complex_rect(1.0, 0.0);
beta = gsl_complex_rect(0.0, 0.0);
switch (argc) {
case 2:
CHECK_MATRIX_COMPLEX(argv[0]);
CHECK_MATRIX_COMPLEX(argv[1]);
Data_Get_Struct(argv[0], gsl_matrix_complex, A);
Data_Get_Struct(argv[1], gsl_matrix_complex, B);
C = gsl_matrix_complex_calloc(A->size1, B->size2);
Side = CblasLeft; Uplo = CblasUpper;
flag = 1;
break;
case 5:
CHECK_FIXNUM(argv[0]);
CHECK_FIXNUM(argv[1]);
CHECK_COMPLEX(argv[2]);
CHECK_MATRIX_COMPLEX(argv[3]);
CHECK_MATRIX_COMPLEX(argv[4]);
Side = FIX2INT(argv[0]);
Uplo = FIX2INT(argv[1]);
Data_Get_Struct(argv[2], gsl_complex, pa);
Data_Get_Struct(argv[3], gsl_matrix_complex, A);
Data_Get_Struct(argv[4], gsl_matrix_complex, B);
C = gsl_matrix_complex_calloc(A->size1, B->size2);
flag = 1;
break;
case 6:
CHECK_FIXNUM(argv[0]);
CHECK_FIXNUM(argv[1]);
CHECK_COMPLEX(argv[2]);
CHECK_MATRIX_COMPLEX(argv[3]);
CHECK_MATRIX_COMPLEX(argv[4]);
CHECK_COMPLEX(argv[5]);
CHECK_MATRIX_COMPLEX(argv[6]);
Side = FIX2INT(argv[0]);
Uplo = FIX2INT(argv[1]);
Data_Get_Struct(argv[2], gsl_complex, pa);
Data_Get_Struct(argv[3], gsl_matrix_complex, A);
Data_Get_Struct(argv[4], gsl_matrix_complex, B);
Data_Get_Struct(argv[5], gsl_complex, pb);
C = gsl_matrix_complex_calloc(A->size1, B->size2);
flag = 1;
break;
case 7:
CHECK_FIXNUM(argv[0]);
CHECK_FIXNUM(argv[1]);
CHECK_COMPLEX(argv[2]);
CHECK_MATRIX_COMPLEX(argv[3]);
CHECK_MATRIX_COMPLEX(argv[4]);
CHECK_COMPLEX(argv[5]);
CHECK_MATRIX_COMPLEX(argv[6]);
Side = FIX2INT(argv[0]);
Uplo = FIX2INT(argv[1]);
Data_Get_Struct(argv[2], gsl_complex, pa);
Data_Get_Struct(argv[3], gsl_matrix_complex, A);
Data_Get_Struct(argv[4], gsl_matrix_complex, B);
Data_Get_Struct(argv[5], gsl_complex, pb);
Data_Get_Struct(argv[6], gsl_matrix_complex, C);
break;
default:
rb_raise(rb_eArgError, "wrong number of arguments (%d for 2 or 7)", argc);
break;
}
gsl_blas_zhemm(Side, Uplo, *pa, A, B, *pb, C);
if (flag == 1) return Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, C);
else return argv[6];
}