home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
IRIX 6.2 Development Libraries
/
SGI IRIX 6.2 Development Libraries.iso
/
dist
/
complib.idb
/
usr
/
share
/
catman
/
p_man
/
cat3
/
complib
/
SSPSL.z
/
SSPSL
Wrap
Text File
|
1996-03-14
|
1KB
|
67 lines
SSSSSSSSPPPPSSSSLLLL((((3333FFFF)))) SSSSSSSSPPPPSSSSLLLL((((3333FFFF))))
NNNNAAAAMMMMEEEE
SSPSL - SSISL solves the real symmetric system A * X = B using the
factors computed by SSPFA.
SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
SUBROUTINE SSPSL(AP,N,KPVT,B)
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
On Entry
AAAAPPPP REAL(N*(N+1)/2)
the output from SSPFA.
NNNN INTEGER
the order of the matrix A .
KKKKPPPPVVVVTTTT INTEGER(N)
the pivot vector from SSPFA.
BBBB REAL(N)
the right hand side vector. On Return
BBBB the solution vector X . Error Condition
AAAA division by zero may occur if SSPCO has set RCOND .EQ. 0.0 or SSPFA
has set INFO .NE. 0 . To compute INVERSE(A) * C where C is a matrix
with P columns
CALL SSPFA(AP,N,KPVT,INFO)
IF (INFO .NE. 0) GO TO ...
DO 10 J = 1, P
CALL SSPSL(AP,N,KPVT,C(1,J)) 10 CONTINUE LINPACK. This version dated
08/14/78 . James Bunch, Univ. Calif. San Diego, Argonne Nat. Lab.
Subroutines and Functions BLAS SAXPY,SDOT Fortran IABS
PPPPaaaaggggeeee 1111