132 lines
4.5 KiB
C++
132 lines
4.5 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__2 = 2;
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static integer c__1 = 1;
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static doublereal c_b10 = 1.;
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static doublereal c_b11 = 0.;
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static integer c_n1 = -1;
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int dlaed7_(integer *icompq, integer *n, integer *qsiz, integer *tlvls, integer *curlvl,
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integer *curpbm, doublereal *d__, doublereal *q, integer *ldq, integer *indxq,
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doublereal *rho, integer *cutpnt, doublereal *qstore, integer *qptr, integer *prmptr,
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integer *perm, integer *givptr, integer *givcol, doublereal *givnum, doublereal *work,
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integer *iwork, integer *info)
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{
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integer q_dim1, q_offset, i__1, i__2;
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integer pow_lmp_ii(integer *, integer *);
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integer i__, k, n1, n2, is, iw, iz, iq2, ptr, ldq2, indx, curr;
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extern int dgemm_(char *, char *, integer *, integer *, integer *, doublereal *, doublereal *,
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integer *, doublereal *, integer *, doublereal *, doublereal *, integer *,
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ftnlen, ftnlen);
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integer indxc, indxp;
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extern int dlaed8_(integer *, integer *, integer *, integer *, doublereal *, doublereal *,
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integer *, integer *, doublereal *, integer *, doublereal *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, integer *, integer *,
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doublereal *, integer *, integer *, integer *),
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dlaed9_(integer *, integer *, integer *, integer *, doublereal *, doublereal *, integer *,
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doublereal *, doublereal *, doublereal *, doublereal *, integer *, integer *),
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dlaeda_(integer *, integer *, integer *, integer *, integer *, integer *, integer *,
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integer *, doublereal *, doublereal *, integer *, doublereal *, doublereal *,
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integer *);
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integer idlmda;
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extern int dlamrg_(integer *, integer *, doublereal *, integer *, integer *, integer *),
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xerbla_(char *, integer *, ftnlen);
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integer coltyp;
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--d__;
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q_dim1 = *ldq;
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q_offset = 1 + q_dim1;
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q -= q_offset;
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--indxq;
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--qstore;
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--qptr;
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--prmptr;
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--perm;
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--givptr;
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givcol -= 3;
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givnum -= 3;
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--work;
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--iwork;
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*info = 0;
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if (*icompq < 0 || *icompq > 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 (*icompq == 1 && *qsiz < *n) {
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*info = -3;
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} else if (*ldq < max(1, *n)) {
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*info = -9;
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} else if (min(1, *n) > *cutpnt || *n < *cutpnt) {
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*info = -12;
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}
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if (*info != 0) {
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i__1 = -(*info);
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xerbla_((char *)"DLAED7", &i__1, (ftnlen)6);
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return 0;
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}
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if (*n == 0) {
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return 0;
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}
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if (*icompq == 1) {
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ldq2 = *qsiz;
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} else {
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ldq2 = *n;
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}
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iz = 1;
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idlmda = iz + *n;
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iw = idlmda + *n;
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iq2 = iw + *n;
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is = iq2 + *n * ldq2;
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indx = 1;
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indxc = indx + *n;
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coltyp = indxc + *n;
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indxp = coltyp + *n;
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ptr = pow_lmp_ii(&c__2, tlvls) + 1;
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i__1 = *curlvl - 1;
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for (i__ = 1; i__ <= i__1; ++i__) {
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i__2 = *tlvls - i__;
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ptr += pow_lmp_ii(&c__2, &i__2);
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}
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curr = ptr + *curpbm;
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dlaeda_(n, tlvls, curlvl, curpbm, &prmptr[1], &perm[1], &givptr[1], &givcol[3], &givnum[3],
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&qstore[1], &qptr[1], &work[iz], &work[iz + *n], info);
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if (*curlvl == *tlvls) {
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qptr[curr] = 1;
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prmptr[curr] = 1;
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givptr[curr] = 1;
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}
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dlaed8_(icompq, &k, n, qsiz, &d__[1], &q[q_offset], ldq, &indxq[1], rho, cutpnt, &work[iz],
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&work[idlmda], &work[iq2], &ldq2, &work[iw], &perm[prmptr[curr]], &givptr[curr + 1],
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&givcol[(givptr[curr] << 1) + 1], &givnum[(givptr[curr] << 1) + 1], &iwork[indxp],
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&iwork[indx], info);
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prmptr[curr + 1] = prmptr[curr] + *n;
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givptr[curr + 1] += givptr[curr];
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if (k != 0) {
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dlaed9_(&k, &c__1, &k, n, &d__[1], &work[is], &k, rho, &work[idlmda], &work[iw],
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&qstore[qptr[curr]], &k, info);
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if (*info != 0) {
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goto L30;
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}
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if (*icompq == 1) {
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dgemm_((char *)"N", (char *)"N", qsiz, &k, &k, &c_b10, &work[iq2], &ldq2, &qstore[qptr[curr]], &k,
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&c_b11, &q[q_offset], ldq, (ftnlen)1, (ftnlen)1);
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}
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i__1 = k;
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qptr[curr + 1] = qptr[curr] + i__1 * i__1;
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n1 = k;
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n2 = *n - k;
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dlamrg_(&n1, &n2, &d__[1], &c__1, &c_n1, &indxq[1]);
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} else {
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qptr[curr + 1] = qptr[curr];
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i__1 = *n;
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for (i__ = 1; i__ <= i__1; ++i__) {
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indxq[i__] = i__;
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}
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}
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L30:
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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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