diff options
Diffstat (limited to 'SRC/dlasyf.f')
| -rw-r--r-- | SRC/dlasyf.f | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/SRC/dlasyf.f b/SRC/dlasyf.f index 84a4a300..3f1d65fe 100644 --- a/SRC/dlasyf.f +++ b/SRC/dlasyf.f @@ -257,7 +257,8 @@ ABSAKK = ABS( W( K, KW ) ) * * IMAX is the row-index of the largest off-diagonal element in -* column K, and COLMAX is its absolute value +* column K, and COLMAX is its absolute value. +* Determine both COLMAX and IMAX. * IF( K.GT.1 ) THEN IMAX = IDAMAX( K-1, W( 1, KW ), 1 ) @@ -268,7 +269,7 @@ * IF( MAX( ABSAKK, COLMAX ).EQ.ZERO ) THEN * -* Column K is zero: set INFO and continue +* Column K is zero or underflow: set INFO and continue * IF( INFO.EQ.0 ) $ INFO = K @@ -552,7 +553,8 @@ ABSAKK = ABS( W( K, K ) ) * * IMAX is the row-index of the largest off-diagonal element in -* column K, and COLMAX is its absolute value +* column K, and COLMAX is its absolute value. +* Determine both COLMAX and IMAX. * IF( K.LT.N ) THEN IMAX = K + IDAMAX( N-K, W( K+1, K ), 1 ) @@ -563,7 +565,7 @@ * IF( MAX( ABSAKK, COLMAX ).EQ.ZERO ) THEN * -* Column K is zero: set INFO and continue +* Column K is zero or underflow: set INFO and continue * IF( INFO.EQ.0 ) $ INFO = K |