| hfti | Least Squares Solution using Householder Transformation |
| ldp | Least Squares Solution under Equality and Inequality Constraints |
| lsei | Least Squares Solution under Equality and Inequality Constraints |
| lsi | Least Squares Solution under Equality and Inequality Constraints |
| nnls | Least Squares and Quadratic Programming under Nonnegativity Constraints |
| pnnls | Least Squares and Quadratic Programming under Nonnegativity Constraints |
| pnnqp | Least Squares and Quadratic Programming under Nonnegativity Constraints |
| qp | Least Squares Solution under Equality and Inequality Constraints |