`dsymv:`procedure`xSYMV`performs matrix-vector multiply-add operation of the form`y := alpha*A*x + beta*y`.`ALPHA`and`BETA`are scalars, and`A`is an`N x N`symmetric matrix.`X`and`Y`are`N`element vectors.

`dsymv:`procedure`xSYMV`performs matrix-vector multiply-add operation of the form`y := alpha*A*x + beta*y`.`ALPHA`and`BETA`are scalars, and`A`is an`N x N`symmetric matrix.`X`and`Y`are`N`element vectors.