`zsymm:`procedure`xSYMM`performs matrix-matrix multiply-add operation of the form`C := alpha*A*B + beta*C`or`C := alpha*B*A + beta*C`.`ALPHA`and`BETA`are scalars,`A`is a symmetric matrix, and`B`and`C`are`M x N`matrices.

`zsymm:`procedure`xSYMM`performs matrix-matrix multiply-add operation of the form`C := alpha*A*B + beta*C`or`C := alpha*B*A + beta*C`.`ALPHA`and`BETA`are scalars,`A`is a symmetric matrix, and`B`and`C`are`M x N`matrices.