264 lines
11 KiB
C++
264 lines
11 KiB
C++
#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lmp_f2c.h"
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int zher2_(char *uplo, integer *n, doublecomplex *alpha, doublecomplex *x, integer *incx,
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doublecomplex *y, integer *incy, doublecomplex *a, integer *lda, ftnlen uplo_len)
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{
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integer a_dim1, a_offset, i__1, i__2, i__3, i__4, i__5, i__6;
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doublereal d__1;
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doublecomplex z__1, z__2, z__3, z__4;
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void d_lmp_cnjg(doublecomplex *, doublecomplex *);
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integer i__, j, ix, iy, jx, jy, kx, ky, info;
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doublecomplex temp1, temp2;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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extern int xerbla_(char *, integer *, ftnlen);
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--x;
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--y;
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a_dim1 = *lda;
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a_offset = 1 + a_dim1;
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a -= a_offset;
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info = 0;
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if (!lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1) && !lsame_(uplo, (char *)"L", (ftnlen)1, (ftnlen)1)) {
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info = 1;
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} else if (*n < 0) {
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info = 2;
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} else if (*incx == 0) {
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info = 5;
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} else if (*incy == 0) {
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info = 7;
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} else if (*lda < max(1, *n)) {
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info = 9;
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}
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if (info != 0) {
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xerbla_((char *)"ZHER2 ", &info, (ftnlen)6);
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return 0;
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}
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if (*n == 0 || alpha->r == 0. && alpha->i == 0.) {
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return 0;
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}
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if (*incx != 1 || *incy != 1) {
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if (*incx > 0) {
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kx = 1;
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} else {
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kx = 1 - (*n - 1) * *incx;
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}
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if (*incy > 0) {
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ky = 1;
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} else {
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ky = 1 - (*n - 1) * *incy;
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}
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jx = kx;
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jy = ky;
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}
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if (lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1)) {
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if (*incx == 1 && *incy == 1) {
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i__1 = *n;
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for (j = 1; j <= i__1; ++j) {
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i__2 = j;
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i__3 = j;
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if (x[i__2].r != 0. || x[i__2].i != 0. || (y[i__3].r != 0. || y[i__3].i != 0.)) {
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d_lmp_cnjg(&z__2, &y[j]);
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z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
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z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
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temp1.r = z__1.r, temp1.i = z__1.i;
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i__2 = j;
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z__2.r = alpha->r * x[i__2].r - alpha->i * x[i__2].i,
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z__2.i = alpha->r * x[i__2].i + alpha->i * x[i__2].r;
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d_lmp_cnjg(&z__1, &z__2);
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temp2.r = z__1.r, temp2.i = z__1.i;
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i__2 = j - 1;
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for (i__ = 1; i__ <= i__2; ++i__) {
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i__3 = i__ + j * a_dim1;
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i__4 = i__ + j * a_dim1;
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i__5 = i__;
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z__3.r = x[i__5].r * temp1.r - x[i__5].i * temp1.i,
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z__3.i = x[i__5].r * temp1.i + x[i__5].i * temp1.r;
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z__2.r = a[i__4].r + z__3.r, z__2.i = a[i__4].i + z__3.i;
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i__6 = i__;
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z__4.r = y[i__6].r * temp2.r - y[i__6].i * temp2.i,
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z__4.i = y[i__6].r * temp2.i + y[i__6].i * temp2.r;
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z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
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a[i__3].r = z__1.r, a[i__3].i = z__1.i;
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}
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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i__4 = j;
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z__2.r = x[i__4].r * temp1.r - x[i__4].i * temp1.i,
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z__2.i = x[i__4].r * temp1.i + x[i__4].i * temp1.r;
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i__5 = j;
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z__3.r = y[i__5].r * temp2.r - y[i__5].i * temp2.i,
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z__3.i = y[i__5].r * temp2.i + y[i__5].i * temp2.r;
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z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
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d__1 = a[i__3].r + z__1.r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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} else {
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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d__1 = a[i__3].r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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}
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}
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} else {
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i__1 = *n;
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for (j = 1; j <= i__1; ++j) {
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i__2 = jx;
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i__3 = jy;
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if (x[i__2].r != 0. || x[i__2].i != 0. || (y[i__3].r != 0. || y[i__3].i != 0.)) {
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d_lmp_cnjg(&z__2, &y[jy]);
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z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
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z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
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temp1.r = z__1.r, temp1.i = z__1.i;
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i__2 = jx;
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z__2.r = alpha->r * x[i__2].r - alpha->i * x[i__2].i,
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z__2.i = alpha->r * x[i__2].i + alpha->i * x[i__2].r;
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d_lmp_cnjg(&z__1, &z__2);
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temp2.r = z__1.r, temp2.i = z__1.i;
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ix = kx;
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iy = ky;
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i__2 = j - 1;
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for (i__ = 1; i__ <= i__2; ++i__) {
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i__3 = i__ + j * a_dim1;
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i__4 = i__ + j * a_dim1;
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i__5 = ix;
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z__3.r = x[i__5].r * temp1.r - x[i__5].i * temp1.i,
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z__3.i = x[i__5].r * temp1.i + x[i__5].i * temp1.r;
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z__2.r = a[i__4].r + z__3.r, z__2.i = a[i__4].i + z__3.i;
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i__6 = iy;
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z__4.r = y[i__6].r * temp2.r - y[i__6].i * temp2.i,
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z__4.i = y[i__6].r * temp2.i + y[i__6].i * temp2.r;
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z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
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a[i__3].r = z__1.r, a[i__3].i = z__1.i;
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ix += *incx;
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iy += *incy;
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}
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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i__4 = jx;
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z__2.r = x[i__4].r * temp1.r - x[i__4].i * temp1.i,
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z__2.i = x[i__4].r * temp1.i + x[i__4].i * temp1.r;
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i__5 = jy;
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z__3.r = y[i__5].r * temp2.r - y[i__5].i * temp2.i,
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z__3.i = y[i__5].r * temp2.i + y[i__5].i * temp2.r;
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z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
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d__1 = a[i__3].r + z__1.r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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} else {
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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d__1 = a[i__3].r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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}
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jx += *incx;
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jy += *incy;
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}
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}
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} else {
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if (*incx == 1 && *incy == 1) {
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i__1 = *n;
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for (j = 1; j <= i__1; ++j) {
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i__2 = j;
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i__3 = j;
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if (x[i__2].r != 0. || x[i__2].i != 0. || (y[i__3].r != 0. || y[i__3].i != 0.)) {
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d_lmp_cnjg(&z__2, &y[j]);
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z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
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z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
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temp1.r = z__1.r, temp1.i = z__1.i;
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i__2 = j;
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z__2.r = alpha->r * x[i__2].r - alpha->i * x[i__2].i,
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z__2.i = alpha->r * x[i__2].i + alpha->i * x[i__2].r;
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d_lmp_cnjg(&z__1, &z__2);
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temp2.r = z__1.r, temp2.i = z__1.i;
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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i__4 = j;
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z__2.r = x[i__4].r * temp1.r - x[i__4].i * temp1.i,
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z__2.i = x[i__4].r * temp1.i + x[i__4].i * temp1.r;
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i__5 = j;
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z__3.r = y[i__5].r * temp2.r - y[i__5].i * temp2.i,
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z__3.i = y[i__5].r * temp2.i + y[i__5].i * temp2.r;
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z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
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d__1 = a[i__3].r + z__1.r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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i__2 = *n;
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for (i__ = j + 1; i__ <= i__2; ++i__) {
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i__3 = i__ + j * a_dim1;
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i__4 = i__ + j * a_dim1;
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i__5 = i__;
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z__3.r = x[i__5].r * temp1.r - x[i__5].i * temp1.i,
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z__3.i = x[i__5].r * temp1.i + x[i__5].i * temp1.r;
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z__2.r = a[i__4].r + z__3.r, z__2.i = a[i__4].i + z__3.i;
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i__6 = i__;
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z__4.r = y[i__6].r * temp2.r - y[i__6].i * temp2.i,
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z__4.i = y[i__6].r * temp2.i + y[i__6].i * temp2.r;
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z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
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a[i__3].r = z__1.r, a[i__3].i = z__1.i;
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}
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} else {
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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d__1 = a[i__3].r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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}
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}
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} else {
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i__1 = *n;
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for (j = 1; j <= i__1; ++j) {
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i__2 = jx;
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i__3 = jy;
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if (x[i__2].r != 0. || x[i__2].i != 0. || (y[i__3].r != 0. || y[i__3].i != 0.)) {
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d_lmp_cnjg(&z__2, &y[jy]);
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z__1.r = alpha->r * z__2.r - alpha->i * z__2.i,
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z__1.i = alpha->r * z__2.i + alpha->i * z__2.r;
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temp1.r = z__1.r, temp1.i = z__1.i;
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i__2 = jx;
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z__2.r = alpha->r * x[i__2].r - alpha->i * x[i__2].i,
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z__2.i = alpha->r * x[i__2].i + alpha->i * x[i__2].r;
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d_lmp_cnjg(&z__1, &z__2);
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temp2.r = z__1.r, temp2.i = z__1.i;
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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i__4 = jx;
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z__2.r = x[i__4].r * temp1.r - x[i__4].i * temp1.i,
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z__2.i = x[i__4].r * temp1.i + x[i__4].i * temp1.r;
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i__5 = jy;
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z__3.r = y[i__5].r * temp2.r - y[i__5].i * temp2.i,
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z__3.i = y[i__5].r * temp2.i + y[i__5].i * temp2.r;
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z__1.r = z__2.r + z__3.r, z__1.i = z__2.i + z__3.i;
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d__1 = a[i__3].r + z__1.r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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ix = jx;
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iy = jy;
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i__2 = *n;
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for (i__ = j + 1; i__ <= i__2; ++i__) {
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ix += *incx;
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iy += *incy;
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i__3 = i__ + j * a_dim1;
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i__4 = i__ + j * a_dim1;
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i__5 = ix;
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z__3.r = x[i__5].r * temp1.r - x[i__5].i * temp1.i,
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z__3.i = x[i__5].r * temp1.i + x[i__5].i * temp1.r;
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z__2.r = a[i__4].r + z__3.r, z__2.i = a[i__4].i + z__3.i;
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i__6 = iy;
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z__4.r = y[i__6].r * temp2.r - y[i__6].i * temp2.i,
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z__4.i = y[i__6].r * temp2.i + y[i__6].i * temp2.r;
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z__1.r = z__2.r + z__4.r, z__1.i = z__2.i + z__4.i;
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a[i__3].r = z__1.r, a[i__3].i = z__1.i;
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}
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} else {
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i__2 = j + j * a_dim1;
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i__3 = j + j * a_dim1;
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d__1 = a[i__3].r;
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a[i__2].r = d__1, a[i__2].i = 0.;
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}
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jx += *incx;
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jy += *incy;
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}
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}
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}
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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