112 lines
3.5 KiB
C++
112 lines
3.5 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 dormhr_(char *side, char *trans, integer *m, integer *n, integer *ilo, integer *ihi,
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doublereal *a, integer *lda, doublereal *tau, doublereal *c__, integer *ldc,
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doublereal *work, integer *lwork, integer *info, ftnlen side_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;
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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, nh, 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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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 dormqr_(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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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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nh = *ihi - *ilo;
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left = lsame_(side, (char *)"L", (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 = *n;
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} else {
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nq = *n;
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nw = *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 (!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 = -2;
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} else if (*m < 0) {
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*info = -3;
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} else if (*n < 0) {
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*info = -4;
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} else if (*ilo < 1 || *ilo > max(1, nq)) {
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*info = -5;
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} else if (*ihi < min(*ilo, nq) || *ihi > nq) {
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*info = -6;
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} else if (*lda < max(1, nq)) {
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*info = -8;
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} else if (*ldc < max(1, *m)) {
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*info = -11;
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} else if (*lwork < max(1, nw) && !lquery) {
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*info = -13;
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}
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if (*info == 0) {
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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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nb = ilaenv_(&c__1, (char *)"DORMQR", ch__1, &nh, n, &nh, &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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nb = ilaenv_(&c__1, (char *)"DORMQR", ch__1, m, &nh, &nh, &c_n1, (ftnlen)6, (ftnlen)2);
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}
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lwkopt = max(1, 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 *)"DORMHR", &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 || nh == 0) {
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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 = nh;
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ni = *n;
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i1 = *ilo + 1;
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i2 = 1;
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} else {
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mi = *m;
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ni = nh;
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i1 = 1;
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i2 = *ilo + 1;
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}
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dormqr_(side, trans, &mi, &ni, &nh, &a[*ilo + 1 + *ilo * a_dim1], lda, &tau[*ilo],
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&c__[i1 + i2 * c_dim1], ldc, &work[1], lwork, &iinfo, (ftnlen)1, (ftnlen)1);
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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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