zlacgv.f.html

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      SUBROUTINE <a name="ZLACGV.1"></a><a href="zlacgv.f.html#ZLACGV.1">ZLACGV</a>( N, X, INCX )
<span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  -- LAPACK auxiliary routine (version 3.1) --
</span><span class="comment">*</span><span class="comment">     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
</span><span class="comment">*</span><span class="comment">     November 2006
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     .. Scalar Arguments ..
</span>      INTEGER            INCX, N
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. Array Arguments ..
</span>      COMPLEX*16         X( * )
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  Purpose
</span><span class="comment">*</span><span class="comment">  =======
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  <a name="ZLACGV.17"></a><a href="zlacgv.f.html#ZLACGV.1">ZLACGV</a> conjugates a complex vector of length N.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  Arguments
</span><span class="comment">*</span><span class="comment">  =========
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  N       (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The length of the vector X.  N &gt;= 0.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  X       (input/output) COMPLEX*16 array, dimension
</span><span class="comment">*</span><span class="comment">                         (1+(N-1)*abs(INCX))
</span><span class="comment">*</span><span class="comment">          On entry, the vector of length N to be conjugated.
</span><span class="comment">*</span><span class="comment">          On exit, X is overwritten with conjg(X).
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  INCX    (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The spacing between successive elements of X.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment"> =====================================================================
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     .. Local Scalars ..
</span>      INTEGER            I, IOFF
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. Intrinsic Functions ..
</span>      INTRINSIC          DCONJG
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. Executable Statements ..
</span><span class="comment">*</span><span class="comment">
</span>      IF( INCX.EQ.1 ) THEN
         DO 10 I = 1, N
            X( I ) = DCONJG( X( I ) )
   10    CONTINUE
      ELSE
         IOFF = 1
         IF( INCX.LT.0 )
     $      IOFF = 1 - ( N-1 )*INCX
         DO 20 I = 1, N
            X( IOFF ) = DCONJG( X( IOFF ) )
            IOFF = IOFF + INCX
   20    CONTINUE
      END IF
      RETURN
<span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     End of <a name="ZLACGV.58"></a><a href="zlacgv.f.html#ZLACGV.1">ZLACGV</a>
</span><span class="comment">*</span><span class="comment">
</span>      END

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