REAL routines

• BD: bidiagonal
• DI: diagonal
• GB: general band
• GE: general (i.e., unsymmetric, in some cases rectangular)
• GG: general matrices, generalized problem (i.e., a pair of general matrices)
• GT: general tridiagonal
• HG: upper Hessenberg matrix, generalized problem (i.e a Hessenberg and a triangular matrix)
• HS: upper Hessenberg
• OP: (real) orthogonal, packed storage
• OR: (real) orthogonal
• PB: symmetric or Hermitian positive definite band
• PO: symmetric or Hermitian positive definite
• PP: symmetric or Hermitian positive definite, packed storage
• PT: symmetric or Hermitian positive definite tridiagonal
• SB: (real) symmetric band
• SP: symmetric, packed storage
• ST: (real) symmetric tridiagonal
• SY: symmetric
• TB: triangular band
• TG: triangular matrices, generalized problem (i.e., a pair of triangular matrices)
• TP: triangular, packed storage
• TR: triangular (or in some cases quasi-triangular)
• TZ: trapezoidal