76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
#include "f2c.h"
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/* Subroutine */ int zlacgv_(integer *n, doublecomplex *x, integer *incx)
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{
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/* -- LAPACK auxiliary routine (version 2.0) --
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Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
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Courant Institute, Argonne National Lab, and Rice University
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October 31, 1992
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Purpose
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=======
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ZLACGV conjugates a complex vector of length N.
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Arguments
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=========
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N (input) INTEGER
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The length of the vector X. N >= 0.
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X (input/output) COMPLEX*16 array, dimension
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(1+(N-1)*abs(INCX))
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On entry, the vector of length N to be conjugated.
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On exit, X is overwritten with conjg(X).
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INCX (input) INTEGER
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The spacing between successive elements of X.
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=====================================================================
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Parameter adjustments
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Function Body */
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/* System generated locals */
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integer i__1, i__2;
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doublecomplex z__1;
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/* Builtin functions */
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void d_cnjg(doublecomplex *, doublecomplex *);
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/* Local variables */
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static integer ioff, i;
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#define X(I) x[(I)-1]
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if (*incx == 1) {
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i__1 = *n;
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for (i = 1; i <= *n; ++i) {
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i__2 = i;
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d_cnjg(&z__1, &X(i));
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X(i).r = z__1.r, X(i).i = z__1.i;
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/* L10: */
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}
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} else {
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ioff = 1;
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if (*incx < 0) {
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ioff = 1 - (*n - 1) * *incx;
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}
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i__1 = *n;
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for (i = 1; i <= *n; ++i) {
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i__2 = ioff;
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d_cnjg(&z__1, &X(ioff));
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X(ioff).r = z__1.r, X(ioff).i = z__1.i;
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ioff += *incx;
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/* L20: */
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}
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}
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return 0;
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/* End of ZLACGV */
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} /* zlacgv_ */
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