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{D,Z}BBCSD: stricter zero criterion #966

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{D,Z}BBCSD: stricter zero criterion #966

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4 changes: 2 additions & 2 deletions SRC/dbbcsd.f
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Original file line number Diff line number Diff line change
Expand Up @@ -302,7 +302,7 @@
* =========================
*>
*> \verbatim
*> TOLMUL DOUBLE PRECISION, default = MAX(10,MIN(100,EPS**(-1/8)))
*> TOLMUL DOUBLE PRECISION, default = 10
*> TOLMUL controls the convergence criterion of the QR loop.
*> Angles THETA(i), PHI(i) are rounded to 0 or PI/2 when they
*> are within TOLMUL*EPS of either bound.
Expand Down Expand Up @@ -451,7 +451,7 @@ SUBROUTINE DBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
*
EPS = DLAMCH( 'Epsilon' )
UNFL = DLAMCH( 'Safe minimum' )
TOLMUL = MAX( TEN, MIN( HUNDRED, EPS**MEIGHTH ) )
TOLMUL = TEN
TOL = TOLMUL*EPS
THRESH = MAX( TOL, MAXITR*Q*Q*UNFL )
*
Expand Down
4 changes: 2 additions & 2 deletions SRC/zbbcsd.f
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Original file line number Diff line number Diff line change
Expand Up @@ -302,7 +302,7 @@
* =========================
*>
*> \verbatim
*> TOLMUL DOUBLE PRECISION, default = MAX(10,MIN(100,EPS**(-1/8)))
*> TOLMUL DOUBLE PRECISION, default = 10
*> TOLMUL controls the convergence criterion of the QR loop.
*> Angles THETA(i), PHI(i) are rounded to 0 or PI/2 when they
*> are within TOLMUL*EPS of either bound.
Expand Down Expand Up @@ -450,7 +450,7 @@ SUBROUTINE ZBBCSD( JOBU1, JOBU2, JOBV1T, JOBV2T, TRANS, M, P, Q,
*
EPS = DLAMCH( 'Epsilon' )
UNFL = DLAMCH( 'Safe minimum' )
TOLMUL = MAX( TEN, MIN( HUNDRED, EPS**MEIGHTH ) )
TOLMUL = TEN
TOL = TOLMUL*EPS
THRESH = MAX( TOL, MAXITR*Q*Q*UNFL )
*
Expand Down