The FORTRAN level-3 BLAS call for this operation is
Here
is replaced by S, D, C, or Z
to indicate the datatype of the data (single, double, complex, double precision complex).
Parameter SIDE indicates whether A multiplies B from
the left (SIDE = "Left") or right (SIDE = "Right").
Parameter UPLO indicates whether A is stored in the
lower (UPLO = "Lower") or upper (UPLO = "Upper") triangular portion of array A.
Parameters M and N pass the dimensions of C (and B ).
The dimensions of A are determined by whether it multiplies B from
the left or right.
Parameters ALPHA and BETA hold the scaling factors 
and 
. Parameters A, B, and C equal the
addresses of where the matrices A , B , and C start in
memory. The leading dimensions of the matrices are given in
LDA, LDB, and LDC.