1ZLA_LIN_BERRL(A1P)ACK routine (version 3.2) ZLA_LIN_BERR(1)
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6 ZLA_LIN_BERR - ZLA_LIN_BERR compute componentwise relative backward
7 error from the formula max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) +
8 abs(B_s) )(i) ) where abs(Z) is the componentwise absolute value of
9 the matrix or vector Z
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12 SUBROUTINE ZLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR )
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14 IMPLICIT NONE
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16 INTEGER N, NZ, NRHS
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18 DOUBLE PRECISION AYB( N, NRHS ), BERR( NRHS )
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20 COMPLEX*16 RES( N, NRHS )
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23 ZLA_LIN_BERR computes componentwise relative backward error from
24 the formula
25 max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) )
26 where abs(Z) is the componentwise absolute value of the matrix
27 or vector Z.
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31 LAPACK routine (version 3.2) November 2008 ZLA_LIN_BERR(1)