LAPACK Linear Equation Driver Routines

Table "Driver Routines for Solving Systems of Linear Equations" lists the LAPACK driver routines for solving systems of linear equations with real or complex matrices.

Driver Routines for Solving Systems of Linear Equations
Matrix type, storage scheme	Simple Driver	Expert Driver	Expert Driver using Extra-Precise Interative Refinement
general	?gesv	?gesvx	?gesvxx
general band	?gbsv	?gbsvx	?gbsvxx
general tridiagonal	?gtsv	?gtsvx
diagonally dominant tridiagonal	?dtsvb
symmetric/Hermitian positive-definite	?posv	?posvx	?posvxx
symmetric/Hermitian positive-definite, storage	?ppsv	?ppsvx
symmetric/Hermitian positive-definite, band	?pbsv	?pbsvx
symmetric/Hermitian positive-definite, tridiagonal	?ptsv	?ptsvx
symmetric/Hermitian indefinite	?sysv/?hesv ?sysv_rook/?sysv_rk/?hesv_rk ?sysv_aa/?hesv_aa	?sysvx/?hesvx	?sysvxx/?hesvxx
symmetric/Hermitian indefinite, packed storage	?spsv/?hpsv	?spsvx/?hpsvx
complex symmetric	?sysv ?sysv_rook	?sysvx
complex symmetric, packed storage	?spsv	?spsvx

In this table ? stands for s (single precision real), d (double precision real), c (single precision complex), or z (double precision complex). In the description of ?gesv and ?posv routines, the ? sign stands for combined character codes ds and zc for the mixed precision subroutines.