Linux Manuals

The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.

Linux Manuals | Linux Manuals session 3

CHER2K (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cher2k.f – SYNOPSIS Functions/Subroutines subroutine cher2k (UPLO, TRANS, N, K, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHER2K Function/Subroutine Documentation subroutine cher2k (characterUPLO, characterTRANS, integerN, integerK, complexALPHA, complex, dimension(lda,*)A, integerLDA, complex, dimension(ldb,*)B, integerLDB, realBETA, complex, dimension(ldc,*)C, integerLDC) CHER2K Purpose: CHER2K performs one of the hermitian rank 2k operations C := alpha*A*B**H + conjg(…

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CHER2 (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cher2.f – SYNOPSIS Functions/Subroutines subroutine cher2 (UPLO, N, ALPHA, X, INCX, Y, INCY, A, LDA) CHER2 Function/Subroutine Documentation subroutine cher2 (characterUPLO, integerN, complexALPHA, complex, dimension(*)X, integerINCX, complex, dimension(*)Y, integerINCY, complex, dimension(lda,*)A, integerLDA) CHER2 Purpose: CHER2 performs the hermitian rank 2 operation A := alpha*x*y**H + conjg( alpha )*y*x**H + A, where alpha is a…

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CHER (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cher.f – SYNOPSIS Functions/Subroutines subroutine cher (UPLO, N, ALPHA, X, INCX, A, LDA) CHER Function/Subroutine Documentation subroutine cher (characterUPLO, integerN, realALPHA, complex, dimension(*)X, integerINCX, complex, dimension(lda,*)A, integerLDA) CHER Purpose: CHER performs the hermitian rank 1 operation A := alpha*x*x**H + A, where alpha is a real scalar, x is an n element vector and…

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CHEMV (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chemv.f – SYNOPSIS Functions/Subroutines subroutine chemv (UPLO, N, ALPHA, A, LDA, X, INCX, BETA, Y, INCY) CHEMV Function/Subroutine Documentation subroutine chemv (characterUPLO, integerN, complexALPHA, complex, dimension(lda,*)A, integerLDA, complex, dimension(*)X, integerINCX, complexBETA, complex, dimension(*)Y, integerINCY) CHEMV Purpose: CHEMV performs the matrix-vector operation y := alpha*A*x + beta*y, where alpha and beta are scalars, x and…

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CHEMM (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chemm.f – SYNOPSIS Functions/Subroutines subroutine chemm (SIDE, UPLO, M, N, ALPHA, A, LDA, B, LDB, BETA, C, LDC) CHEMM Function/Subroutine Documentation subroutine chemm (characterSIDE, characterUPLO, integerM, integerN, complexALPHA, complex, dimension(lda,*)A, integerLDA, complex, dimension(ldb,*)B, integerLDB, complexBETA, complex, dimension(ldc,*)C, integerLDC) CHEMM Purpose: CHEMM performs one of the matrix-matrix operations C := alpha*A*B + beta*C, or C…

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CHEGVX (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chegvx.f – SYNOPSIS Functions/Subroutines subroutine chegvx (ITYPE, JOBZ, RANGE, UPLO, N, A, LDA, B, LDB, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, LWORK, RWORK, IWORK, IFAIL, INFO) CHEGST Function/Subroutine Documentation subroutine chegvx (integerITYPE, characterJOBZ, characterRANGE, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, realVL, realVU,…

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CHEGVD (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chegvd.f – SYNOPSIS Functions/Subroutines subroutine chegvd (ITYPE, JOBZ, UPLO, N, A, LDA, B, LDB, W, WORK, LWORK, RWORK, LRWORK, IWORK, LIWORK, INFO) CHEGST Function/Subroutine Documentation subroutine chegvd (integerITYPE, characterJOBZ, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, real, dimension( * )W, complex, dimension( * )WORK, integerLWORK, real, dimension(…

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CHEGV (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chegv.f – SYNOPSIS Functions/Subroutines subroutine chegv (ITYPE, JOBZ, UPLO, N, A, LDA, B, LDB, W, WORK, LWORK, RWORK, INFO) CHEGST Function/Subroutine Documentation subroutine chegv (integerITYPE, characterJOBZ, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, real, dimension( * )W, complex, dimension( * )WORK, integerLWORK, real, dimension( * )RWORK, integerINFO)…

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CHEGST (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chegst.f – SYNOPSIS Functions/Subroutines subroutine chegst (ITYPE, UPLO, N, A, LDA, B, LDB, INFO) CHEGST Function/Subroutine Documentation subroutine chegst (integerITYPE, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, integerINFO) CHEGST Purpose: CHEGST reduces a complex Hermitian-definite generalized eigenproblem to standard form. If ITYPE = 1, the problem is…

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CHEGS2 (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chegs2.f – SYNOPSIS Functions/Subroutines subroutine chegs2 (ITYPE, UPLO, N, A, LDA, B, LDB, INFO) CHEGS2 reduces a Hermitian definite generalized eigenproblem to standard form, using the factorization results obtained from cpotrf (unblocked algorithm). Function/Subroutine Documentation subroutine chegs2 (integerITYPE, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB, integerINFO) CHEGS2…

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CHEEVX (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cheevx.f – SYNOPSIS Functions/Subroutines subroutine cheevx (JOBZ, RANGE, UPLO, N, A, LDA, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, LWORK, RWORK, IWORK, IFAIL, INFO) CHEEVX computes the eigenvalues and, optionally, the left and/or right eigenvectors for HE matrices Function/Subroutine Documentation subroutine cheevx (characterJOBZ, characterRANGE, characterUPLO, integerN, complex, dimension( lda, * )A,…

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CHEEVR (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cheevr.f – SYNOPSIS Functions/Subroutines subroutine cheevr (JOBZ, RANGE, UPLO, N, A, LDA, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, ISUPPZ, WORK, LWORK, RWORK, LRWORK, IWORK, LIWORK, INFO) CHEEVR computes the eigenvalues and, optionally, the left and/or right eigenvectors for HE matrices Function/Subroutine Documentation subroutine cheevr (characterJOBZ, characterRANGE, characterUPLO, integerN, complex, dimension( lda,…

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CHEEVD (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cheevd.f – SYNOPSIS Functions/Subroutines subroutine cheevd (JOBZ, UPLO, N, A, LDA, W, WORK, LWORK, RWORK, LRWORK, IWORK, LIWORK, INFO) CHEEVD computes the eigenvalues and, optionally, the left and/or right eigenvectors for HE matrices Function/Subroutine Documentation subroutine cheevd (characterJOBZ, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, real, dimension( * )W, complex, dimension( * )WORK,…

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CHEEV (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cheev.f – SYNOPSIS Functions/Subroutines subroutine cheev (JOBZ, UPLO, N, A, LDA, W, WORK, LWORK, RWORK, INFO) CHEEV computes the eigenvalues and, optionally, the left and/or right eigenvectors for HE matrices Function/Subroutine Documentation subroutine cheev (characterJOBZ, characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, real, dimension( * )W, complex, dimension( * )WORK, integerLWORK, real, dimension(…

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CHEEQUB (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME cheequb.f – SYNOPSIS Functions/Subroutines subroutine cheequb (UPLO, N, A, LDA, S, SCOND, AMAX, WORK, INFO) CHEEQUB Function/Subroutine Documentation subroutine cheequb (characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, real, dimension( * )S, realSCOND, realAMAX, complex, dimension( * )WORK, integerINFO) CHEEQUB Purpose: CHEEQUB computes row and column scalings intended to equilibrate a Hermitian matrix A…

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CHECON (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME checon.f – SYNOPSIS Functions/Subroutines subroutine checon (UPLO, N, A, LDA, IPIV, ANORM, RCOND, WORK, INFO) CHECON Function/Subroutine Documentation subroutine checon (characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, realANORM, realRCOND, complex, dimension( * )WORK, integerINFO) CHECON Purpose: CHECON estimates the reciprocal of the condition number of a complex Hermitian matrix…

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CHBTRD (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chbtrd.f – SYNOPSIS Functions/Subroutines subroutine chbtrd (VECT, UPLO, N, KD, AB, LDAB, D, E, Q, LDQ, WORK, INFO) CHBTRD Function/Subroutine Documentation subroutine chbtrd (characterVECT, characterUPLO, integerN, integerKD, complex, dimension( ldab, * )AB, integerLDAB, real, dimension( * )D, real, dimension( * )E, complex, dimension( ldq, * )Q, integerLDQ, complex, dimension( * )WORK, integerINFO) CHBTRD Purpose:…

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CHBMV (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chbmv.f – SYNOPSIS Functions/Subroutines subroutine chbmv (UPLO, N, K, ALPHA, A, LDA, X, INCX, BETA, Y, INCY) CHBMV Function/Subroutine Documentation subroutine chbmv (characterUPLO, integerN, integerK, complexALPHA, complex, dimension(lda,*)A, integerLDA, complex, dimension(*)X, integerINCX, complexBETA, complex, dimension(*)Y, integerINCY) CHBMV Purpose: CHBMV performs the matrix-vector operation y := alpha*A*x + beta*y, where alpha and beta are scalars,…

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CHBGVX (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chbgvx.f – SYNOPSIS Functions/Subroutines subroutine chbgvx (JOBZ, RANGE, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, Q, LDQ, VL, VU, IL, IU, ABSTOL, M, W, Z, LDZ, WORK, RWORK, IWORK, IFAIL, INFO) CHBGST Function/Subroutine Documentation subroutine chbgvx (characterJOBZ, characterRANGE, characterUPLO, integerN, integerKA, integerKB, complex, dimension( ldab, * )AB, integerLDAB, complex, dimension( ldbb, * )BB,…

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CHBGVD (3) Linux Manual Page
ByLinux Manual Apr 20, 2026May 20, 2026

NAME chbgvd.f – SYNOPSIS Functions/Subroutines subroutine chbgvd (JOBZ, UPLO, N, KA, KB, AB, LDAB, BB, LDBB, W, Z, LDZ, WORK, LWORK, RWORK, LRWORK, IWORK, LIWORK, INFO) CHBGST Function/Subroutine Documentation subroutine chbgvd (characterJOBZ, characterUPLO, integerN, integerKA, integerKB, complex, dimension( ldab, * )AB, integerLDAB, complex, dimension( ldbb, * )BB, integerLDBB, real, dimension( * )W, complex, dimension( ldz,…

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