TESTING/EIG/zget35.f(3) | Library Functions Manual | TESTING/EIG/zget35.f(3) |
NAME
TESTING/EIG/zget35.f
SYNOPSIS
Functions/Subroutines
subroutine zget35 (rmax, lmax, ninfo, knt, nin)
ZGET35
Function/Subroutine Documentation
subroutine zget35 (double precision rmax, integer lmax, integer ninfo, integer knt, integer nin)
ZGET35
Purpose:
ZGET35 tests ZTRSYL, a routine for solving the Sylvester matrix equation op(A)*X + ISGN*X*op(B) = scale*C, A and B are assumed to be in Schur canonical form, op() represents an optional transpose, and ISGN can be -1 or +1. Scale is an output less than or equal to 1, chosen to avoid overflow in X. The test code verifies that the following residual is order 1: norm(op(A)*X + ISGN*X*op(B) - scale*C) / (EPS*max(norm(A),norm(B))*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 where INFO is nonzero.
KNT
KNT is INTEGER Total number of examples tested.
NIN
NIN is INTEGER Input logical unit number.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 83 of file zget35.f.
Author
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