# Pages du manuel Linux : Fonctions des bibliothèques

sgeqr2
compute a QR factorization of a real m by n matrix A
sgeqrf
compute a QR factorization of a real M-by-N matrix A
sger
perform the rank 1 operation A := alpha*x*y' + A,
sgerfs
improve the computed solution to a system of linear equations and provides error bounds and backward error estimates for the solution
sgerq2
compute an RQ factorization of a real m by n matrix A
sgerqf
compute an RQ factorization of a real M-by-N matrix A
sgesc2
solve a system of linear equations A * X = scale* RHS with a general N-by-N matrix A using the LU factorization with complete pivoting computed by SGETC2
sgesdd
compute the singular value decomposition (SVD) of a real M-by-N matrix A, optionally computing the left and right singular vectors
sgesv
compute the solution to a real system of linear equations A * X = B,
sgesvd
compute the singular value decomposition (SVD) of a real M-by-N matrix A, optionally computing the left and/or right singular vectors
sgesvx
use the LU factorization to compute the solution to a real system of linear equations A * X = B,
sgetc2
compute an LU factorization with complete pivoting of the n-by-n matrix A
sgetf2
compute an LU factorization of a general m-by-n matrix A using partial pivoting with row interchanges
sgetrf
compute an LU factorization of a general M-by-N matrix A using partial pivoting with row interchanges
sgetri
compute the inverse of a matrix using the LU factorization computed by SGETRF
sgetrs
solve a system of linear equations A * X = B or A' * X = B with a general N-by-N matrix A using the LU factorization computed by SGETRF
sggbak
form the right or left eigenvectors of a real generalized eigenvalue problem A*x = lambda*B*x, by backward transformation on the computed eigenvectors of the balanced pair of matrices output by SGGBAL
sggbal
balance a pair of general real matrices (A,B)
sgges
compute for a pair of N-by-N real nonsymmetric matrices (A,B),
sggesx
compute for a pair of N-by-N real nonsymmetric matrices (A,B), the generalized eigenvalues, the real Schur form (S,T), and,
sggev
compute for a pair of N-by-N real nonsymmetric matrices (A,B)
sggevx
compute for a pair of N-by-N real nonsymmetric matrices (A,B)
sggglm
solve a general Gauss-Markov linear model (GLM) problem
sgghrd
reduce a pair of real matrices (A,B) to generalized upper Hessenberg form using orthogonal transformations, where A is a general matrix and B is upper triangular
sgglse
solve the linear equality-constrained least squares (LSE) problem
sggqrf
compute a generalized QR factorization of an N-by-M matrix A and an N-by-P matrix B
sggrqf
compute a generalized RQ factorization of an M-by-N matrix A and a P-by-N matrix B
sggsvd
compute the generalized singular value decomposition (GSVD) of an M-by-N real matrix A and P-by-N real matrix B
sggsvp
compute orthogonal matrices U, V and Q such that N-K-L K L U'*A*Q = K ( 0 A12 A13 ) if M-K-L >= 0
SGIextensions
SGMLS
class for postprocessing the output from the sgmls and nsgmls parsers.
SGMLS::Output
Stack-based Output Procedures
SGMLS::Refs
Forward refeence handling
sgtcon
estimate the reciprocal of the condition number of a real tridiagonal matrix A using the LU factorization as computed by SGTTRF
sgtrfs
improve the computed solution to a system of linear equations when the coefficient matrix is tridiagonal, and provides error bounds and backward error estimates for the solution
sgtsv
solve the equation A*X = B,
sgtsvx
use the LU factorization to compute the solution to a real system of linear equations A * X = B or A**T * X = B,
sgttrf
compute an LU factorization of a real tridiagonal matrix A using elimination with partial pivoting and row interchanges
sgttrs
solve one of the systems of equations A*X = B or A'*X = B,
sgtts2
solve one of the systems of equations A*X = B or A'*X = B,
sg_get_cpu_percents
get cpu usage
sg_get_cpu_stats
get cpu usage
sg_get_cpu_stats_diff
get cpu usage
sg_get_disk_io_stats
get disk io statistics
sg_get_disk_io_stats_diff
get disk io statistics
sg_get_fs_stats
get filesystem statistics
sg_get_host_info
get general operating system statistics