--- rpl/lapack/lapack/zlange.f 2020/05/21 21:46:07 1.18 +++ rpl/lapack/lapack/zlange.f 2023/08/07 08:39:29 1.19 @@ -108,19 +108,15 @@ *> \author Univ. of Colorado Denver *> \author NAG Ltd. * -*> \date December 2016 -* *> \ingroup complex16GEauxiliary * * ===================================================================== DOUBLE PRECISION FUNCTION ZLANGE( NORM, M, N, A, LDA, WORK ) * -* -- LAPACK auxiliary routine (version 3.7.0) -- +* -- LAPACK auxiliary routine -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- -* December 2016 * - IMPLICIT NONE * .. Scalar Arguments .. CHARACTER NORM INTEGER LDA, M, N @@ -138,17 +134,14 @@ * .. * .. Local Scalars .. INTEGER I, J - DOUBLE PRECISION SUM, VALUE, TEMP -* .. -* .. Local Arrays .. - DOUBLE PRECISION SSQ( 2 ), COLSSQ( 2 ) + DOUBLE PRECISION SCALE, SUM, VALUE, TEMP * .. * .. External Functions .. LOGICAL LSAME, DISNAN EXTERNAL LSAME, DISNAN * .. * .. External Subroutines .. - EXTERNAL ZLASSQ, DCOMBSSQ + EXTERNAL ZLASSQ * .. * .. Intrinsic Functions .. INTRINSIC ABS, MIN, SQRT @@ -200,19 +193,13 @@ ELSE IF( ( LSAME( NORM, 'F' ) ) .OR. ( LSAME( NORM, 'E' ) ) ) THEN * * Find normF(A). -* SSQ(1) is scale -* SSQ(2) is sum-of-squares -* For better accuracy, sum each column separately. * - SSQ( 1 ) = ZERO - SSQ( 2 ) = ONE + SCALE = ZERO + SUM = ONE DO 90 J = 1, N - COLSSQ( 1 ) = ZERO - COLSSQ( 2 ) = ONE - CALL ZLASSQ( M, A( 1, J ), 1, COLSSQ( 1 ), COLSSQ( 2 ) ) - CALL DCOMBSSQ( SSQ, COLSSQ ) + CALL ZLASSQ( M, A( 1, J ), 1, SCALE, SUM ) 90 CONTINUE - VALUE = SSQ( 1 )*SQRT( SSQ( 2 ) ) + VALUE = SCALE*SQRT( SUM ) END IF * ZLANGE = VALUE