| g01eec | Upper and lower tail probabilities and probability density function for the beta distribution |
| g01jdc | Computes lower tail probability for a linear combination of (central) χ2 variables |
| g13ebc | One iteration step of the time-invariant Kalman filter recursion using the square root covariance implementation with (A,C) in lower observer Hessenberg form |
| g13ewc | Unitary state-space transformation to reduce (A,C) to lower or upper observer Hessenberg form |
| g13exc | Unitary state-space transformation to reduce (B,A) to lower or upper controller Hessenberg form |