whitespace fixes
This commit is contained in:
Axel Kohlmeyer
@ -1,13 +1,13 @@
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/* fortran/zstedc.f -- translated by f2c (version 20200916).
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You must link the resulting object file with libf2c:
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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http://www.netlib.org/f2c/libf2c.zip
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http://www.netlib.org/f2c/libf2c.zip
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*/
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#ifdef __cplusplus
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@ -236,10 +236,10 @@ f"> */
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/* > at Berkeley, USA */
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/* ===================================================================== */
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/* Subroutine */ int zstedc_(char *compz, integer *n, doublereal *d__,
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doublereal *e, doublecomplex *z__, integer *ldz, doublecomplex *work,
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integer *lwork, doublereal *rwork, integer *lrwork, integer *iwork,
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integer *liwork, integer *info, ftnlen compz_len)
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/* Subroutine */ int zstedc_(char *compz, integer *n, doublereal *d__,
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doublereal *e, doublecomplex *z__, integer *ldz, doublecomplex *work,
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integer *lwork, doublereal *rwork, integer *lrwork, integer *iwork,
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integer *liwork, integer *info, ftnlen compz_len)
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{
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/* System generated locals */
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integer z_dim1, z_offset, i__1, i__2, i__3, i__4;
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@ -257,40 +257,40 @@ f"> */
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doublereal eps, tiny;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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integer lwmin, start;
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extern /* Subroutine */ int zswap_(integer *, doublecomplex *, integer *,
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doublecomplex *, integer *), zlaed0_(integer *, integer *,
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doublereal *, doublereal *, doublecomplex *, integer *,
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doublecomplex *, integer *, doublereal *, integer *, integer *);
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extern /* Subroutine */ int zswap_(integer *, doublecomplex *, integer *,
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doublecomplex *, integer *), zlaed0_(integer *, integer *,
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doublereal *, doublereal *, doublecomplex *, integer *,
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doublecomplex *, integer *, doublereal *, integer *, integer *);
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extern doublereal dlamch_(char *, ftnlen);
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extern /* Subroutine */ int dlascl_(char *, integer *, integer *,
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doublereal *, doublereal *, integer *, integer *, doublereal *,
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integer *, integer *, ftnlen), dstedc_(char *, integer *,
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doublereal *, doublereal *, doublereal *, integer *, doublereal *,
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integer *, integer *, integer *, integer *, ftnlen), dlaset_(
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char *, integer *, integer *, doublereal *, doublereal *,
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doublereal *, integer *, ftnlen), xerbla_(char *, integer *,
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ftnlen);
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extern integer ilaenv_(integer *, char *, char *, integer *, integer *,
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integer *, integer *, ftnlen, ftnlen);
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extern /* Subroutine */ int dlascl_(char *, integer *, integer *,
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doublereal *, doublereal *, integer *, integer *, doublereal *,
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integer *, integer *, ftnlen), dstedc_(char *, integer *,
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doublereal *, doublereal *, doublereal *, integer *, doublereal *,
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integer *, integer *, integer *, integer *, ftnlen), dlaset_(
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char *, integer *, integer *, doublereal *, doublereal *,
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doublereal *, integer *, ftnlen), xerbla_(char *, integer *,
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ftnlen);
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extern integer ilaenv_(integer *, char *, char *, integer *, integer *,
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integer *, integer *, ftnlen, ftnlen);
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integer finish;
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extern doublereal dlanst_(char *, integer *, doublereal *, doublereal *,
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ftnlen);
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extern doublereal dlanst_(char *, integer *, doublereal *, doublereal *,
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ftnlen);
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extern /* Subroutine */ int dsterf_(integer *, doublereal *, doublereal *,
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integer *), zlacrm_(integer *, integer *, doublecomplex *,
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integer *, doublereal *, integer *, doublecomplex *, integer *,
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doublereal *);
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integer *), zlacrm_(integer *, integer *, doublecomplex *,
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integer *, doublereal *, integer *, doublecomplex *, integer *,
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doublereal *);
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integer liwmin, icompz;
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extern /* Subroutine */ int dsteqr_(char *, integer *, doublereal *,
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doublereal *, doublereal *, integer *, doublereal *, integer *,
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ftnlen), zlacpy_(char *, integer *, integer *, doublecomplex *,
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integer *, doublecomplex *, integer *, ftnlen);
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extern /* Subroutine */ int dsteqr_(char *, integer *, doublereal *,
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doublereal *, doublereal *, integer *, doublereal *, integer *,
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ftnlen), zlacpy_(char *, integer *, integer *, doublecomplex *,
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integer *, doublecomplex *, integer *, ftnlen);
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doublereal orgnrm;
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integer lrwmin;
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logical lquery;
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integer smlsiz;
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extern /* Subroutine */ int zsteqr_(char *, integer *, doublereal *,
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doublereal *, doublecomplex *, integer *, doublereal *, integer *,
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ftnlen);
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extern /* Subroutine */ int zsteqr_(char *, integer *, doublereal *,
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doublereal *, doublecomplex *, integer *, doublereal *, integer *,
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ftnlen);
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/* -- LAPACK computational routine -- */
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@ -333,88 +333,88 @@ f"> */
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lquery = *lwork == -1 || *lrwork == -1 || *liwork == -1;
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if (lsame_(compz, (char *)"N", (ftnlen)1, (ftnlen)1)) {
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icompz = 0;
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icompz = 0;
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} else if (lsame_(compz, (char *)"V", (ftnlen)1, (ftnlen)1)) {
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icompz = 1;
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icompz = 1;
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} else if (lsame_(compz, (char *)"I", (ftnlen)1, (ftnlen)1)) {
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icompz = 2;
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icompz = 2;
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} else {
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icompz = -1;
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icompz = -1;
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}
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if (icompz < 0) {
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*info = -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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*info = -2;
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} else if (*ldz < 1 || icompz > 0 && *ldz < max(1,*n)) {
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*info = -6;
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*info = -6;
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}
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if (*info == 0) {
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/* Compute the workspace requirements */
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smlsiz = ilaenv_(&c__9, (char *)"ZSTEDC", (char *)" ", &c__0, &c__0, &c__0, &c__0, (
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ftnlen)6, (ftnlen)1);
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if (*n <= 1 || icompz == 0) {
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lwmin = 1;
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liwmin = 1;
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lrwmin = 1;
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} else if (*n <= smlsiz) {
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lwmin = 1;
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liwmin = 1;
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lrwmin = *n - 1 << 1;
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} else if (icompz == 1) {
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lgn = (integer) (log((doublereal) (*n)) / log(2.));
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if (pow_ii(&c__2, &lgn) < *n) {
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++lgn;
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}
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if (pow_ii(&c__2, &lgn) < *n) {
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++lgn;
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}
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lwmin = *n * *n;
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smlsiz = ilaenv_(&c__9, (char *)"ZSTEDC", (char *)" ", &c__0, &c__0, &c__0, &c__0, (
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ftnlen)6, (ftnlen)1);
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if (*n <= 1 || icompz == 0) {
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lwmin = 1;
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liwmin = 1;
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lrwmin = 1;
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} else if (*n <= smlsiz) {
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lwmin = 1;
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liwmin = 1;
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lrwmin = *n - 1 << 1;
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} else if (icompz == 1) {
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lgn = (integer) (log((doublereal) (*n)) / log(2.));
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if (pow_ii(&c__2, &lgn) < *n) {
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++lgn;
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}
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if (pow_ii(&c__2, &lgn) < *n) {
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++lgn;
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}
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lwmin = *n * *n;
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/* Computing 2nd power */
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i__1 = *n;
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lrwmin = *n * 3 + 1 + (*n << 1) * lgn + (i__1 * i__1 << 2);
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liwmin = *n * 6 + 6 + *n * 5 * lgn;
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} else if (icompz == 2) {
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lwmin = 1;
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i__1 = *n;
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lrwmin = *n * 3 + 1 + (*n << 1) * lgn + (i__1 * i__1 << 2);
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liwmin = *n * 6 + 6 + *n * 5 * lgn;
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} else if (icompz == 2) {
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lwmin = 1;
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/* Computing 2nd power */
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i__1 = *n;
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lrwmin = (*n << 2) + 1 + (i__1 * i__1 << 1);
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liwmin = *n * 5 + 3;
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}
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work[1].r = (doublereal) lwmin, work[1].i = 0.;
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rwork[1] = (doublereal) lrwmin;
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iwork[1] = liwmin;
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i__1 = *n;
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lrwmin = (*n << 2) + 1 + (i__1 * i__1 << 1);
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liwmin = *n * 5 + 3;
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}
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work[1].r = (doublereal) lwmin, work[1].i = 0.;
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rwork[1] = (doublereal) lrwmin;
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iwork[1] = liwmin;
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if (*lwork < lwmin && ! lquery) {
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*info = -8;
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} else if (*lrwork < lrwmin && ! lquery) {
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*info = -10;
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} else if (*liwork < liwmin && ! lquery) {
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*info = -12;
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}
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if (*lwork < lwmin && ! lquery) {
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*info = -8;
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} else if (*lrwork < lrwmin && ! lquery) {
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*info = -10;
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} else if (*liwork < liwmin && ! lquery) {
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*info = -12;
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}
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}
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if (*info != 0) {
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i__1 = -(*info);
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xerbla_((char *)"ZSTEDC", &i__1, (ftnlen)6);
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return 0;
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i__1 = -(*info);
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xerbla_((char *)"ZSTEDC", &i__1, (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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return 0;
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}
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/* Quick return if possible */
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if (*n == 0) {
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return 0;
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return 0;
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}
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if (*n == 1) {
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if (icompz != 0) {
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i__1 = z_dim1 + 1;
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z__[i__1].r = 1., z__[i__1].i = 0.;
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}
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return 0;
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if (icompz != 0) {
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i__1 = z_dim1 + 1;
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z__[i__1].r = 1., z__[i__1].i = 0.;
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}
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return 0;
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}
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/* If the following conditional clause is removed, then the routine */
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@ -429,8 +429,8 @@ f"> */
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/* If COMPZ = 'N', use DSTERF to compute the eigenvalues. */
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if (icompz == 0) {
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dsterf_(n, &d__[1], &e[1], info);
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goto L70;
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dsterf_(n, &d__[1], &e[1], info);
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goto L70;
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}
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/* If N is smaller than the minimum divide size (SMLSIZ+1), then */
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@ -438,51 +438,51 @@ f"> */
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if (*n <= smlsiz) {
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zsteqr_(compz, n, &d__[1], &e[1], &z__[z_offset], ldz, &rwork[1],
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info, (ftnlen)1);
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zsteqr_(compz, n, &d__[1], &e[1], &z__[z_offset], ldz, &rwork[1],
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info, (ftnlen)1);
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} else {
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/* If COMPZ = 'I', we simply call DSTEDC instead. */
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if (icompz == 2) {
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dlaset_((char *)"Full", n, n, &c_b17, &c_b18, &rwork[1], n, (ftnlen)4);
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ll = *n * *n + 1;
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i__1 = *lrwork - ll + 1;
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dstedc_((char *)"I", n, &d__[1], &e[1], &rwork[1], n, &rwork[ll], &i__1, &
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iwork[1], liwork, info, (ftnlen)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 = *n;
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for (i__ = 1; i__ <= i__2; ++i__) {
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i__3 = i__ + j * z_dim1;
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i__4 = (j - 1) * *n + i__;
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z__[i__3].r = rwork[i__4], z__[i__3].i = 0.;
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if (icompz == 2) {
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dlaset_((char *)"Full", n, n, &c_b17, &c_b18, &rwork[1], n, (ftnlen)4);
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ll = *n * *n + 1;
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i__1 = *lrwork - ll + 1;
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dstedc_((char *)"I", n, &d__[1], &e[1], &rwork[1], n, &rwork[ll], &i__1, &
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iwork[1], liwork, info, (ftnlen)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 = *n;
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for (i__ = 1; i__ <= i__2; ++i__) {
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i__3 = i__ + j * z_dim1;
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i__4 = (j - 1) * *n + i__;
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z__[i__3].r = rwork[i__4], z__[i__3].i = 0.;
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/* L10: */
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}
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}
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/* L20: */
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}
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goto L70;
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}
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}
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goto L70;
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}
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/* From now on, only option left to be handled is COMPZ = 'V', */
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/* i.e. ICOMPZ = 1. */
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/* Scale. */
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orgnrm = dlanst_((char *)"M", n, &d__[1], &e[1], (ftnlen)1);
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if (orgnrm == 0.) {
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goto L70;
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}
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orgnrm = dlanst_((char *)"M", n, &d__[1], &e[1], (ftnlen)1);
|
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if (orgnrm == 0.) {
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goto L70;
|
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}
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eps = dlamch_((char *)"Epsilon", (ftnlen)7);
|
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eps = dlamch_((char *)"Epsilon", (ftnlen)7);
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|
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start = 1;
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start = 1;
|
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|
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/* while ( START <= N ) */
|
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|
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L30:
|
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if (start <= *n) {
|
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if (start <= *n) {
|
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|
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/* Let FINISH be the position of the next subdiagonal entry */
|
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/* such that E( FINISH ) <= TINY or FINISH = N if no such */
|
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@ -490,88 +490,88 @@ L30:
|
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/* between START and FINISH constitutes an independent */
|
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/* sub-problem. */
|
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|
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finish = start;
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finish = start;
|
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L40:
|
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if (finish < *n) {
|
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tiny = eps * sqrt((d__1 = d__[finish], abs(d__1))) * sqrt((
|
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d__2 = d__[finish + 1], abs(d__2)));
|
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if ((d__1 = e[finish], abs(d__1)) > tiny) {
|
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++finish;
|
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goto L40;
|
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}
|
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}
|
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if (finish < *n) {
|
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tiny = eps * sqrt((d__1 = d__[finish], abs(d__1))) * sqrt((
|
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d__2 = d__[finish + 1], abs(d__2)));
|
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if ((d__1 = e[finish], abs(d__1)) > tiny) {
|
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++finish;
|
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goto L40;
|
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}
|
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}
|
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|
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/* (Sub) Problem determined. Compute its size and solve it. */
|
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|
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m = finish - start + 1;
|
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if (m > smlsiz) {
|
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m = finish - start + 1;
|
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if (m > smlsiz) {
|
||||
|
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/* Scale. */
|
||||
|
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orgnrm = dlanst_((char *)"M", &m, &d__[start], &e[start], (ftnlen)1);
|
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dlascl_((char *)"G", &c__0, &c__0, &orgnrm, &c_b18, &m, &c__1, &d__[
|
||||
start], &m, info, (ftnlen)1);
|
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i__1 = m - 1;
|
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i__2 = m - 1;
|
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dlascl_((char *)"G", &c__0, &c__0, &orgnrm, &c_b18, &i__1, &c__1, &e[
|
||||
start], &i__2, info, (ftnlen)1);
|
||||
orgnrm = dlanst_((char *)"M", &m, &d__[start], &e[start], (ftnlen)1);
|
||||
dlascl_((char *)"G", &c__0, &c__0, &orgnrm, &c_b18, &m, &c__1, &d__[
|
||||
start], &m, info, (ftnlen)1);
|
||||
i__1 = m - 1;
|
||||
i__2 = m - 1;
|
||||
dlascl_((char *)"G", &c__0, &c__0, &orgnrm, &c_b18, &i__1, &c__1, &e[
|
||||
start], &i__2, info, (ftnlen)1);
|
||||
|
||||
zlaed0_(n, &m, &d__[start], &e[start], &z__[start * z_dim1 +
|
||||
1], ldz, &work[1], n, &rwork[1], &iwork[1], info);
|
||||
if (*info > 0) {
|
||||
*info = (*info / (m + 1) + start - 1) * (*n + 1) + *info %
|
||||
(m + 1) + start - 1;
|
||||
goto L70;
|
||||
}
|
||||
zlaed0_(n, &m, &d__[start], &e[start], &z__[start * z_dim1 +
|
||||
1], ldz, &work[1], n, &rwork[1], &iwork[1], info);
|
||||
if (*info > 0) {
|
||||
*info = (*info / (m + 1) + start - 1) * (*n + 1) + *info %
|
||||
(m + 1) + start - 1;
|
||||
goto L70;
|
||||
}
|
||||
|
||||
/* Scale back. */
|
||||
|
||||
dlascl_((char *)"G", &c__0, &c__0, &c_b18, &orgnrm, &m, &c__1, &d__[
|
||||
start], &m, info, (ftnlen)1);
|
||||
dlascl_((char *)"G", &c__0, &c__0, &c_b18, &orgnrm, &m, &c__1, &d__[
|
||||
start], &m, info, (ftnlen)1);
|
||||
|
||||
} else {
|
||||
dsteqr_((char *)"I", &m, &d__[start], &e[start], &rwork[1], &m, &
|
||||
rwork[m * m + 1], info, (ftnlen)1);
|
||||
zlacrm_(n, &m, &z__[start * z_dim1 + 1], ldz, &rwork[1], &m, &
|
||||
work[1], n, &rwork[m * m + 1]);
|
||||
zlacpy_((char *)"A", n, &m, &work[1], n, &z__[start * z_dim1 + 1],
|
||||
ldz, (ftnlen)1);
|
||||
if (*info > 0) {
|
||||
*info = start * (*n + 1) + finish;
|
||||
goto L70;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
dsteqr_((char *)"I", &m, &d__[start], &e[start], &rwork[1], &m, &
|
||||
rwork[m * m + 1], info, (ftnlen)1);
|
||||
zlacrm_(n, &m, &z__[start * z_dim1 + 1], ldz, &rwork[1], &m, &
|
||||
work[1], n, &rwork[m * m + 1]);
|
||||
zlacpy_((char *)"A", n, &m, &work[1], n, &z__[start * z_dim1 + 1],
|
||||
ldz, (ftnlen)1);
|
||||
if (*info > 0) {
|
||||
*info = start * (*n + 1) + finish;
|
||||
goto L70;
|
||||
}
|
||||
}
|
||||
|
||||
start = finish + 1;
|
||||
goto L30;
|
||||
}
|
||||
start = finish + 1;
|
||||
goto L30;
|
||||
}
|
||||
|
||||
/* endwhile */
|
||||
|
||||
|
||||
/* Use Selection Sort to minimize swaps of eigenvectors */
|
||||
|
||||
i__1 = *n;
|
||||
for (ii = 2; ii <= i__1; ++ii) {
|
||||
i__ = ii - 1;
|
||||
k = i__;
|
||||
p = d__[i__];
|
||||
i__2 = *n;
|
||||
for (j = ii; j <= i__2; ++j) {
|
||||
if (d__[j] < p) {
|
||||
k = j;
|
||||
p = d__[j];
|
||||
}
|
||||
i__1 = *n;
|
||||
for (ii = 2; ii <= i__1; ++ii) {
|
||||
i__ = ii - 1;
|
||||
k = i__;
|
||||
p = d__[i__];
|
||||
i__2 = *n;
|
||||
for (j = ii; j <= i__2; ++j) {
|
||||
if (d__[j] < p) {
|
||||
k = j;
|
||||
p = d__[j];
|
||||
}
|
||||
/* L50: */
|
||||
}
|
||||
if (k != i__) {
|
||||
d__[k] = d__[i__];
|
||||
d__[i__] = p;
|
||||
zswap_(n, &z__[i__ * z_dim1 + 1], &c__1, &z__[k * z_dim1 + 1],
|
||||
&c__1);
|
||||
}
|
||||
}
|
||||
if (k != i__) {
|
||||
d__[k] = d__[i__];
|
||||
d__[i__] = p;
|
||||
zswap_(n, &z__[i__ * z_dim1 + 1], &c__1, &z__[k * z_dim1 + 1],
|
||||
&c__1);
|
||||
}
|
||||
/* L60: */
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
L70:
|
||||
@ -586,5 +586,5 @@ L70:
|
||||
} /* zstedc_ */
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user