1SLASQ5(1)LAPACK routine (version 3.2)                                 SLASQ5(1)
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NAME

6       SLASQ5 - computes one dqds transform in ping-pong form, one version for
7       IEEE machines another for non IEEE machines
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SYNOPSIS

10       SUBROUTINE SLASQ5( I0, N0, Z, PP, TAU, DMIN, DMIN1,  DMIN2,  DN,  DNM1,
11                          DNM2, IEEE )
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13           LOGICAL        IEEE
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15           INTEGER        I0, N0, PP
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17           REAL           DMIN, DMIN1, DMIN2, DN, DNM1, DNM2, TAU
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19           REAL           Z( * )
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PURPOSE

22       SLASQ5  computes  one dqds transform in ping-pong form, one version for
23       IEEE machines another for non IEEE machines.
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ARGUMENTS

26       I0    (input) INTEGER
27             First index.
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29       N0    (input) INTEGER
30             Last index.
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32       Z     (input) REAL array, dimension ( 4*N )
33             Z holds the qd array. EMIN is stored in Z(4*N0) to avoid an extra
34             argument.
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36       PP    (input) INTEGER
37             PP=0 for ping, PP=1 for pong.
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39       TAU   (input) REAL
40             This is the shift.
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42       DMIN  (output) REAL
43             Minimum  value  of  d.   DMIN1  (output) REAL Minimum value of d,
44             excluding D( N0 ).  DMIN2  (output)  REAL  Minimum  value  of  d,
45             excluding D( N0 ) and D( N0-1 ).
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47       DN    (output) REAL
48             d(N0), the last value of d.
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50       DNM1  (output) REAL
51             d(N0-1).
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53       DNM2  (output) REAL
54             d(N0-2).
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56       IEEE  (input) LOGICAL
57             Flag for IEEE or non IEEE arithmetic.
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61 LAPACK routine (version 3.2)    November 2008                       SLASQ5(1)