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TESTING/EIG/sget32.f(3) LAPACK TESTING/EIG/sget32.f(3)

TESTING/EIG/sget32.f


subroutine sget32 (rmax, lmax, ninfo, knt)
SGET32

SGET32

Purpose:


SGET32 tests SLASY2, 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 REAL
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 sget32.f.

Generated automatically by Doxygen for LAPACK from the source code.

Sun Jan 12 2025 15:13:33 Version 3.12.1

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