--- rpl/lapack/lapack/zlantp.f 2012/08/22 09:48:36 1.10 +++ rpl/lapack/lapack/zlantp.f 2023/08/07 08:39:30 1.19 @@ -1,25 +1,25 @@ -*> \brief \b ZLANTP +*> \brief \b ZLANTP returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a triangular matrix supplied in packed form. * * =========== DOCUMENTATION =========== * -* Online html documentation available at -* http://www.netlib.org/lapack/explore-html/ +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ * *> \htmlonly -*> Download ZLANTP + dependencies -*> -*> [TGZ] -*> -*> [ZIP] -*> +*> Download ZLANTP + dependencies +*> +*> [TGZ] +*> +*> [ZIP] +*> *> [TXT] -*> \endhtmlonly +*> \endhtmlonly * * Definition: * =========== * * DOUBLE PRECISION FUNCTION ZLANTP( NORM, UPLO, DIAG, N, AP, WORK ) -* +* * .. Scalar Arguments .. * CHARACTER DIAG, NORM, UPLO * INTEGER N @@ -28,7 +28,7 @@ * DOUBLE PRECISION WORK( * ) * COMPLEX*16 AP( * ) * .. -* +* * *> \par Purpose: * ============= @@ -113,22 +113,19 @@ * Authors: * ======== * -*> \author Univ. of Tennessee -*> \author Univ. of California Berkeley -*> \author Univ. of Colorado Denver -*> \author NAG Ltd. -* -*> \date November 2011 +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. * *> \ingroup complex16OTHERauxiliary * * ===================================================================== DOUBLE PRECISION FUNCTION ZLANTP( NORM, UPLO, DIAG, N, AP, WORK ) * -* -- LAPACK auxiliary routine (version 3.4.0) -- +* -- LAPACK auxiliary routine -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- -* November 2011 * * .. Scalar Arguments .. CHARACTER DIAG, NORM, UPLO @@ -151,14 +148,14 @@ DOUBLE PRECISION SCALE, SUM, VALUE * .. * .. External Functions .. - LOGICAL LSAME - EXTERNAL LSAME + LOGICAL LSAME, DISNAN + EXTERNAL LSAME, DISNAN * .. * .. External Subroutines .. EXTERNAL ZLASSQ * .. * .. Intrinsic Functions .. - INTRINSIC ABS, MAX, SQRT + INTRINSIC ABS, SQRT * .. * .. Executable Statements .. * @@ -174,14 +171,16 @@ IF( LSAME( UPLO, 'U' ) ) THEN DO 20 J = 1, N DO 10 I = K, K + J - 2 - VALUE = MAX( VALUE, ABS( AP( I ) ) ) + SUM = ABS( AP( I ) ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 10 CONTINUE K = K + J 20 CONTINUE ELSE DO 40 J = 1, N DO 30 I = K + 1, K + N - J - VALUE = MAX( VALUE, ABS( AP( I ) ) ) + SUM = ABS( AP( I ) ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 30 CONTINUE K = K + N - J + 1 40 CONTINUE @@ -191,14 +190,16 @@ IF( LSAME( UPLO, 'U' ) ) THEN DO 60 J = 1, N DO 50 I = K, K + J - 1 - VALUE = MAX( VALUE, ABS( AP( I ) ) ) + SUM = ABS( AP( I ) ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 50 CONTINUE K = K + J 60 CONTINUE ELSE DO 80 J = 1, N DO 70 I = K, K + N - J - VALUE = MAX( VALUE, ABS( AP( I ) ) ) + SUM = ABS( AP( I ) ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 70 CONTINUE K = K + N - J + 1 80 CONTINUE @@ -225,7 +226,7 @@ 100 CONTINUE END IF K = K + J - VALUE = MAX( VALUE, SUM ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 110 CONTINUE ELSE DO 140 J = 1, N @@ -241,7 +242,7 @@ 130 CONTINUE END IF K = K + N - J + 1 - VALUE = MAX( VALUE, SUM ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 140 CONTINUE END IF ELSE IF( LSAME( NORM, 'I' ) ) THEN @@ -298,7 +299,8 @@ END IF VALUE = ZERO DO 270 I = 1, N - VALUE = MAX( VALUE, WORK( I ) ) + SUM = WORK( I ) + IF( VALUE .LT. SUM .OR. DISNAN( SUM ) ) VALUE = SUM 270 CONTINUE ELSE IF( ( LSAME( NORM, 'F' ) ) .OR. ( LSAME( NORM, 'E' ) ) ) THEN *