Performs one of the Hermitian rank k operations C = alpha*A*ctrans( A ) + beta*C, or C = alpha*ctrans( A )*A + beta*C, where alpha and beta are scalars, C is an n by n Hermitian matrix and A is an n by k matrix in the first case and a k by n matrix in the second case. The name 'ctrans' represents the conjugate transpose of the matrix. Classes : D1b5 . Matrix addition, subtraction Type : Fortran subroutine in IMSLS library. Access : Proprietary. Many implementations available. Precision: Single. Usage : CALL CHERK (UPLO, TRANS, N, K, ALPHA, A, LDA, BETA, C, LDC) Details : Documentation Example Sites : (1) ITL
ITL: Unix Workstation Network, National Institute of Standards and Technology (NIST), Gaithersburg, MD. Available to NIST staff. Precision: Single. (Double: ZHERK) Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted. Link : Login to spruce.nist.gov and see ITL How-To for information on how to setup your environment and link. Documentation: cat /home/fetch/Subjects/Math-Stat-Software/imsl/Documentation/cherk Example : cat /home/fetch/Subjects/Math-Stat-Software/imsl/Examples/cherk
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