fix nrhs=0 case in ?gelss

Author: eaberendeev

SRC/cgelss.f

@@ -538,7 +538,7 @@ SUBROUTINE CGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, CZERO, WORK, N )
                CALL CLACPY( 'G', N, BL, WORK, N, B( 1, I ), LDB )
    20       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL CGEMV( 'C', N, N, CONE, A, LDA, B, 1, CZERO, WORK, 1 )
             CALL CCOPY( N, WORK, 1, B, 1 )
          END IF
@@ -643,7 +643,7 @@ SUBROUTINE CGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
                CALL CLACPY( 'G', M, BL, WORK( IWORK ), M, B( 1, I ),
      $                      LDB )
    40       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL CGEMV( 'C', M, M, CONE, WORK( IL ), LDWORK, B( 1, 1 ),
      $                  1, CZERO, WORK( IWORK ), 1 )
             CALL CCOPY( M, WORK( IWORK ), 1, B( 1, 1 ), 1 )
@@ -735,7 +735,7 @@ SUBROUTINE CGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, CZERO, WORK, N )
                CALL CLACPY( 'F', N, BL, WORK, N, B( 1, I ), LDB )
    60       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL CGEMV( 'C', M, N, CONE, A, LDA, B, 1, CZERO, WORK, 1 )
             CALL CCOPY( N, WORK, 1, B, 1 )
          END IF

SRC/dgelss.f

@@ -528,7 +528,7 @@ SUBROUTINE DGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, ZERO, WORK, N )
                CALL DLACPY( 'G', N, BL, WORK, N, B( 1, I ), LDB )
    20       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL DGEMV( 'T', N, N, ONE, A, LDA, B, 1, ZERO, WORK, 1 )
             CALL DCOPY( N, WORK, 1, B, 1 )
          END IF
@@ -625,7 +625,7 @@ SUBROUTINE DGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
                CALL DLACPY( 'G', M, BL, WORK( IWORK ), M, B( 1, I ),
      $                      LDB )
    40       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL DGEMV( 'T', M, M, ONE, WORK( IL ), LDWORK, B( 1, 1 ),
      $                  1, ZERO, WORK( IWORK ), 1 )
             CALL DCOPY( M, WORK( IWORK ), 1, B( 1, 1 ), 1 )
@@ -711,7 +711,7 @@ SUBROUTINE DGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, ZERO, WORK, N )
                CALL DLACPY( 'F', N, BL, WORK, N, B( 1, I ), LDB )
    60       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL DGEMV( 'T', M, N, ONE, A, LDA, B, 1, ZERO, WORK, 1 )
             CALL DCOPY( N, WORK, 1, B, 1 )
          END IF

SRC/sgelss.f

@@ -524,7 +524,7 @@ SUBROUTINE SGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, ZERO, WORK, N )
                CALL SLACPY( 'G', N, BL, WORK, N, B( 1, I ), LDB )
    20       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL SGEMV( 'T', N, N, ONE, A, LDA, B, 1, ZERO, WORK, 1 )
             CALL SCOPY( N, WORK, 1, B, 1 )
          END IF
@@ -621,7 +621,7 @@ SUBROUTINE SGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
                CALL SLACPY( 'G', M, BL, WORK( IWORK ), M, B( 1, I ),
      $                      LDB )
    40       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL SGEMV( 'T', M, M, ONE, WORK( IL ), LDWORK, B( 1, 1 ),
      $                  1, ZERO, WORK( IWORK ), 1 )
             CALL SCOPY( M, WORK( IWORK ), 1, B( 1, 1 ), 1 )
@@ -707,7 +707,7 @@ SUBROUTINE SGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, ZERO, WORK, N )
                CALL SLACPY( 'F', N, BL, WORK, N, B( 1, I ), LDB )
    60       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL SGEMV( 'T', M, N, ONE, A, LDA, B, 1, ZERO, WORK, 1 )
             CALL SCOPY( N, WORK, 1, B, 1 )
          END IF

SRC/zgelss.f

@@ -538,7 +538,7 @@ SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, CZERO, WORK, N )
                CALL ZLACPY( 'G', N, BL, WORK, N, B( 1, I ), LDB )
    20       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL ZGEMV( 'C', N, N, CONE, A, LDA, B, 1, CZERO, WORK, 1 )
             CALL ZCOPY( N, WORK, 1, B, 1 )
          END IF
@@ -643,7 +643,7 @@ SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
                CALL ZLACPY( 'G', M, BL, WORK( IWORK ), M, B( 1, I ),
      $                      LDB )
    40       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL ZGEMV( 'C', M, M, CONE, WORK( IL ), LDWORK, B( 1, 1 ),
      $                  1, CZERO, WORK( IWORK ), 1 )
             CALL ZCOPY( M, WORK( IWORK ), 1, B( 1, 1 ), 1 )
@@ -735,7 +735,7 @@ SUBROUTINE ZGELSS( M, N, NRHS, A, LDA, B, LDB, S, RCOND, RANK,
      $                     LDB, CZERO, WORK, N )
                CALL ZLACPY( 'F', N, BL, WORK, N, B( 1, I ), LDB )
    60       CONTINUE
-         ELSE
+         ELSE IF( NRHS.EQ.1 ) THEN
             CALL ZGEMV( 'C', M, N, CONE, A, LDA, B, 1, CZERO, WORK, 1 )
             CALL ZCOPY( N, WORK, 1, B, 1 )
          END IF