### Routines for Estimating the Condition Number

p?gecon estimates the reciprocal of the condition number of a general distributed matrix in either the 1-norm or the infinity-norm.
``` call psgecon (norm, n, a, ia, ja, desca, anorm, rcond, work, iwork, liwork, info) call pdgecon (norm, n, a, ia, ja, desca, anorm, rcond, work, iwork, liwork, info) call pcgecon (norm, n, a, ia, ja, desca, anorm, rcond, work, rwork, lrwork, info) call pzgecon (norm, n, a, ia, ja, desca, anorm, rcond, work, rwork, lrwork, info) ```

p?pocon estimates the reciprocal of the condition number (in the 1-norm) of a symmetric/Hermitian positive-definite distributed matrix.
``` call pspocon (uplo, n, a, ia, ja, desca, anorm, rcond, work, lwork, iwork, liwork, info) call pdpocon (uplo, n, a, ia, ja, desca, anorm, rcond, work, lwork, iwork, liwork, info) call pcpocon (uplo, n, a, ia, ja, desca, anorm, rcond, work, lwork, iwork, liwork, info) call pzpocon (uplo, n, a, ia, ja, desca, anorm, rcond, work, lwork, iwork, liwork, info) ```

p?trcon estimates the reciprocal of the condition number of a triangular distributed matrix un either 1-norm or infinity-norm.
``` call pstrcon (norm, uplo, diag, n, a, ia, ja, desca, rcond, work, lwork, iwork, liwork, info) call pdtrcon (norm, uplo, diag, n, a, ia, ja, desca, rcond, work, lwork, iwork, liwork, info) call pctrcon (norm, uplo, diag, n, a, ia, ja, desca, rcond, work, lwork, iwork, liwork, info) call pztrcon (norm, uplo, diag, n, a, ia, ja, desca, rcond, work, lwork, iwork, liwork, info) ```

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