146 lines
4.9 KiB
C++
146 lines
4.9 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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static integer c__1 = 1;
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static integer c_n1 = -1;
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static integer c__2 = 2;
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int dormtr_(char *side, char *uplo, char *trans, integer *m, integer *n, doublereal *a,
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integer *lda, doublereal *tau, doublereal *c__, integer *ldc, doublereal *work,
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integer *lwork, integer *info, ftnlen side_len, ftnlen uplo_len, ftnlen trans_len)
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{
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address a__1[2];
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integer a_dim1, a_offset, c_dim1, c_offset, i__1[2], i__2, i__3;
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char ch__1[2];
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int s_lmp_cat(char *, char **, integer *, integer *, ftnlen);
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integer i1, i2, nb, mi, ni, nq, nw;
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logical left;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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integer iinfo;
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logical upper;
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extern int xerbla_(char *, integer *, ftnlen);
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extern integer ilaenv_(integer *, char *, char *, integer *, integer *, integer *, integer *,
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ftnlen, ftnlen);
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extern int dormql_(char *, char *, integer *, integer *, integer *, doublereal *, integer *,
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doublereal *, doublereal *, integer *, doublereal *, integer *, integer *,
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ftnlen, ftnlen),
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dormqr_(char *, char *, integer *, integer *, integer *, doublereal *, integer *,
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doublereal *, doublereal *, integer *, doublereal *, integer *, integer *, ftnlen,
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ftnlen);
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integer lwkopt;
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logical lquery;
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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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--tau;
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c_dim1 = *ldc;
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c_offset = 1 + c_dim1;
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c__ -= c_offset;
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--work;
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*info = 0;
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left = lsame_(side, (char *)"L", (ftnlen)1, (ftnlen)1);
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upper = lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1);
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lquery = *lwork == -1;
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if (left) {
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nq = *m;
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nw = max(1, *n);
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} else {
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nq = *n;
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nw = max(1, *m);
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}
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if (!left && !lsame_(side, (char *)"R", (ftnlen)1, (ftnlen)1)) {
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*info = -1;
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} else if (!upper && !lsame_(uplo, (char *)"L", (ftnlen)1, (ftnlen)1)) {
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*info = -2;
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} else if (!lsame_(trans, (char *)"N", (ftnlen)1, (ftnlen)1) &&
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!lsame_(trans, (char *)"T", (ftnlen)1, (ftnlen)1)) {
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*info = -3;
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} else if (*m < 0) {
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*info = -4;
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} else if (*n < 0) {
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*info = -5;
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} else if (*lda < max(1, nq)) {
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*info = -7;
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} else if (*ldc < max(1, *m)) {
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*info = -10;
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} else if (*lwork < nw && !lquery) {
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*info = -12;
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}
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if (*info == 0) {
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if (upper) {
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if (left) {
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i__1[0] = 1, a__1[0] = side;
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i__1[1] = 1, a__1[1] = trans;
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s_lmp_cat(ch__1, a__1, i__1, &c__2, (ftnlen)2);
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i__2 = *m - 1;
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i__3 = *m - 1;
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nb = ilaenv_(&c__1, (char *)"DORMQL", ch__1, &i__2, n, &i__3, &c_n1, (ftnlen)6, (ftnlen)2);
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} else {
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i__1[0] = 1, a__1[0] = side;
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i__1[1] = 1, a__1[1] = trans;
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s_lmp_cat(ch__1, a__1, i__1, &c__2, (ftnlen)2);
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i__2 = *n - 1;
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i__3 = *n - 1;
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nb = ilaenv_(&c__1, (char *)"DORMQL", ch__1, m, &i__2, &i__3, &c_n1, (ftnlen)6, (ftnlen)2);
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}
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} else {
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if (left) {
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i__1[0] = 1, a__1[0] = side;
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i__1[1] = 1, a__1[1] = trans;
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s_lmp_cat(ch__1, a__1, i__1, &c__2, (ftnlen)2);
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i__2 = *m - 1;
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i__3 = *m - 1;
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nb = ilaenv_(&c__1, (char *)"DORMQR", ch__1, &i__2, n, &i__3, &c_n1, (ftnlen)6, (ftnlen)2);
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} else {
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i__1[0] = 1, a__1[0] = side;
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i__1[1] = 1, a__1[1] = trans;
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s_lmp_cat(ch__1, a__1, i__1, &c__2, (ftnlen)2);
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i__2 = *n - 1;
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i__3 = *n - 1;
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nb = ilaenv_(&c__1, (char *)"DORMQR", ch__1, m, &i__2, &i__3, &c_n1, (ftnlen)6, (ftnlen)2);
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}
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}
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lwkopt = nw * nb;
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work[1] = (doublereal)lwkopt;
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}
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if (*info != 0) {
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i__2 = -(*info);
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xerbla_((char *)"DORMTR", &i__2, (ftnlen)6);
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return 0;
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} else if (lquery) {
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return 0;
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}
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if (*m == 0 || *n == 0 || nq == 1) {
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work[1] = 1.;
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return 0;
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}
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if (left) {
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mi = *m - 1;
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ni = *n;
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} else {
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mi = *m;
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ni = *n - 1;
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}
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if (upper) {
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i__2 = nq - 1;
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dormql_(side, trans, &mi, &ni, &i__2, &a[(a_dim1 << 1) + 1], lda, &tau[1], &c__[c_offset],
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ldc, &work[1], lwork, &iinfo, (ftnlen)1, (ftnlen)1);
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} else {
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if (left) {
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i1 = 2;
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i2 = 1;
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} else {
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i1 = 1;
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i2 = 2;
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}
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i__2 = nq - 1;
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dormqr_(side, trans, &mi, &ni, &i__2, &a[a_dim1 + 2], lda, &tau[1], &c__[i1 + i2 * c_dim1],
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ldc, &work[1], lwork, &iinfo, (ftnlen)1, (ftnlen)1);
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}
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work[1] = (doublereal)lwkopt;
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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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