dget32.f3
Usage
Functions/Subroutines
subroutine dget32 (rmax, lmax, ninfo, knt)
DGET32
Function/Subroutine Documentation
subroutine dget32 (double precision rmax, integer lmax, integer ninfo, integer knt)
DGET32
Purpose:
!> !> DGET32 tests DLASY2, a routine for solving !> !> op(TL)*X + ISGN*X*op(TR) = SCALE*B !> !> where TL is N1 by N1, TR is N2 by N2, and N1,N2 =1 or 2 only. !> X and B are N1 by N2, op() is an optional transpose, an !> ISGN = 1 or -1. SCALE is chosen less than or equal to 1 to !> avoid overflow in X. !> !> The test condition is that the scaled residual !> !> norm( op(TL)*X + ISGN*X*op(TR) = SCALE*B ) !> / ( max( ulp*norm(TL), ulp*norm(TR)) * norm(X), SMLNUM ) !> !> should be on the order of 1. Here, ulp is the machine precision. !> Also, it is verified that SCALE is less than or equal to 1, and !> that XNORM = infinity-norm(X). !>
Parameters
RMAX
!> RMAX is DOUBLE PRECISION !> Value of the largest test ratio. !>
LMAX
!> LMAX is INTEGER !> Example number where largest test ratio achieved. !>
NINFO
!> NINFO is INTEGER !> Number of examples returned with INFO.NE.0. !>
KNT
!> KNT is INTEGER !> Total number of examples tested. !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 81 of file dget32.f.