whitespace fixes
This commit is contained in:
Axel Kohlmeyer
@ -1,13 +1,13 @@
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/* fortran/dlasq3.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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@ -196,12 +196,12 @@ f"> */
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/* > \ingroup auxOTHERcomputational */
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/* ===================================================================== */
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/* Subroutine */ int dlasq3_(integer *i0, integer *n0, doublereal *z__,
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integer *pp, doublereal *dmin__, doublereal *sigma, doublereal *desig,
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doublereal *qmax, integer *nfail, integer *iter, integer *ndiv,
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logical *ieee, integer *ttype, doublereal *dmin1, doublereal *dmin2,
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doublereal *dn, doublereal *dn1, doublereal *dn2, doublereal *g,
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doublereal *tau)
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/* Subroutine */ int dlasq3_(integer *i0, integer *n0, doublereal *z__,
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integer *pp, doublereal *dmin__, doublereal *sigma, doublereal *desig,
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doublereal *qmax, integer *nfail, integer *iter, integer *ndiv,
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logical *ieee, integer *ttype, doublereal *dmin1, doublereal *dmin2,
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doublereal *dn, doublereal *dn1, doublereal *dn2, doublereal *g,
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doublereal *tau)
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{
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/* System generated locals */
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integer i__1;
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@ -216,15 +216,15 @@ f"> */
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doublereal eps, tol;
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integer n0in, ipn4;
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doublereal tol2, temp;
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extern /* Subroutine */ int dlasq4_(integer *, integer *, doublereal *,
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integer *, integer *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *, doublereal *, doublereal *, integer *,
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doublereal *), dlasq5_(integer *, integer *, doublereal *,
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integer *, doublereal *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *, doublereal *, doublereal *, logical *
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, doublereal *), dlasq6_(integer *, integer *, doublereal *,
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integer *, doublereal *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *);
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extern /* Subroutine */ int dlasq4_(integer *, integer *, doublereal *,
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integer *, integer *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *, doublereal *, doublereal *, integer *,
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doublereal *), dlasq5_(integer *, integer *, doublereal *,
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integer *, doublereal *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *, doublereal *, doublereal *, logical *
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, doublereal *), dlasq6_(integer *, integer *, doublereal *,
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integer *, doublereal *, doublereal *, doublereal *, doublereal *,
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doublereal *, doublereal *);
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extern doublereal dlamch_(char *, ftnlen);
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extern logical disnan_(doublereal *);
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@ -268,21 +268,21 @@ f"> */
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L10:
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if (*n0 < *i0) {
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return 0;
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return 0;
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}
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if (*n0 == *i0) {
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goto L20;
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goto L20;
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}
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nn = (*n0 << 2) + *pp;
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if (*n0 == *i0 + 1) {
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goto L40;
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goto L40;
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}
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/* Check whether E(N0-1) is negligible, 1 eigenvalue. */
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if (z__[nn - 5] > tol2 * (*sigma + z__[nn - 3]) && z__[nn - (*pp << 1) -
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4] > tol2 * z__[nn - 7]) {
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goto L30;
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if (z__[nn - 5] > tol2 * (*sigma + z__[nn - 3]) && z__[nn - (*pp << 1) -
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4] > tol2 * z__[nn - 7]) {
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goto L30;
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}
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L20:
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@ -296,28 +296,28 @@ L20:
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L30:
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if (z__[nn - 9] > tol2 * *sigma && z__[nn - (*pp << 1) - 8] > tol2 * z__[
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nn - 11]) {
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goto L50;
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nn - 11]) {
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goto L50;
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}
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L40:
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if (z__[nn - 3] > z__[nn - 7]) {
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s = z__[nn - 3];
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z__[nn - 3] = z__[nn - 7];
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z__[nn - 7] = s;
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s = z__[nn - 3];
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z__[nn - 3] = z__[nn - 7];
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z__[nn - 7] = s;
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}
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t = (z__[nn - 7] - z__[nn - 3] + z__[nn - 5]) * .5;
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if (z__[nn - 5] > z__[nn - 3] * tol2 && t != 0.) {
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s = z__[nn - 3] * (z__[nn - 5] / t);
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if (s <= t) {
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s = z__[nn - 3] * (z__[nn - 5] / (t * (sqrt(s / t + 1.) + 1.)));
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} else {
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s = z__[nn - 3] * (z__[nn - 5] / (t + sqrt(t) * sqrt(t + s)));
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}
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t = z__[nn - 7] + (s + z__[nn - 5]);
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z__[nn - 3] *= z__[nn - 7] / t;
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z__[nn - 7] = t;
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s = z__[nn - 3] * (z__[nn - 5] / t);
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if (s <= t) {
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s = z__[nn - 3] * (z__[nn - 5] / (t * (sqrt(s / t + 1.) + 1.)));
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} else {
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s = z__[nn - 3] * (z__[nn - 5] / (t + sqrt(t) * sqrt(t + s)));
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}
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t = z__[nn - 7] + (s + z__[nn - 5]);
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z__[nn - 3] *= z__[nn - 7] / t;
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z__[nn - 7] = t;
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}
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z__[(*n0 << 2) - 7] = z__[nn - 7] + *sigma;
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z__[(*n0 << 2) - 3] = z__[nn - 3] + *sigma;
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@ -326,64 +326,64 @@ L40:
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L50:
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if (*pp == 2) {
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*pp = 0;
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*pp = 0;
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}
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/* Reverse the qd-array, if warranted. */
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if (*dmin__ <= 0. || *n0 < n0in) {
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if (z__[(*i0 << 2) + *pp - 3] * 1.5 < z__[(*n0 << 2) + *pp - 3]) {
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ipn4 = *i0 + *n0 << 2;
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i__1 = *i0 + *n0 - 1 << 1;
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for (j4 = *i0 << 2; j4 <= i__1; j4 += 4) {
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temp = z__[j4 - 3];
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z__[j4 - 3] = z__[ipn4 - j4 - 3];
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z__[ipn4 - j4 - 3] = temp;
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temp = z__[j4 - 2];
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z__[j4 - 2] = z__[ipn4 - j4 - 2];
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z__[ipn4 - j4 - 2] = temp;
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temp = z__[j4 - 1];
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z__[j4 - 1] = z__[ipn4 - j4 - 5];
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z__[ipn4 - j4 - 5] = temp;
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temp = z__[j4];
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z__[j4] = z__[ipn4 - j4 - 4];
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z__[ipn4 - j4 - 4] = temp;
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if (z__[(*i0 << 2) + *pp - 3] * 1.5 < z__[(*n0 << 2) + *pp - 3]) {
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ipn4 = *i0 + *n0 << 2;
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i__1 = *i0 + *n0 - 1 << 1;
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for (j4 = *i0 << 2; j4 <= i__1; j4 += 4) {
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temp = z__[j4 - 3];
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z__[j4 - 3] = z__[ipn4 - j4 - 3];
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z__[ipn4 - j4 - 3] = temp;
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temp = z__[j4 - 2];
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z__[j4 - 2] = z__[ipn4 - j4 - 2];
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z__[ipn4 - j4 - 2] = temp;
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temp = z__[j4 - 1];
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z__[j4 - 1] = z__[ipn4 - j4 - 5];
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z__[ipn4 - j4 - 5] = temp;
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temp = z__[j4];
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z__[j4] = z__[ipn4 - j4 - 4];
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z__[ipn4 - j4 - 4] = temp;
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/* L60: */
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}
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if (*n0 - *i0 <= 4) {
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z__[(*n0 << 2) + *pp - 1] = z__[(*i0 << 2) + *pp - 1];
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z__[(*n0 << 2) - *pp] = z__[(*i0 << 2) - *pp];
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}
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}
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if (*n0 - *i0 <= 4) {
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z__[(*n0 << 2) + *pp - 1] = z__[(*i0 << 2) + *pp - 1];
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z__[(*n0 << 2) - *pp] = z__[(*i0 << 2) - *pp];
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}
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/* Computing MIN */
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d__1 = *dmin2, d__2 = z__[(*n0 << 2) + *pp - 1];
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*dmin2 = min(d__1,d__2);
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d__1 = *dmin2, d__2 = z__[(*n0 << 2) + *pp - 1];
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*dmin2 = min(d__1,d__2);
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/* Computing MIN */
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d__1 = z__[(*n0 << 2) + *pp - 1], d__2 = z__[(*i0 << 2) + *pp - 1]
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, d__1 = min(d__1,d__2), d__2 = z__[(*i0 << 2) + *pp + 3];
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z__[(*n0 << 2) + *pp - 1] = min(d__1,d__2);
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d__1 = z__[(*n0 << 2) + *pp - 1], d__2 = z__[(*i0 << 2) + *pp - 1]
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, d__1 = min(d__1,d__2), d__2 = z__[(*i0 << 2) + *pp + 3];
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z__[(*n0 << 2) + *pp - 1] = min(d__1,d__2);
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/* Computing MIN */
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d__1 = z__[(*n0 << 2) - *pp], d__2 = z__[(*i0 << 2) - *pp], d__1 =
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min(d__1,d__2), d__2 = z__[(*i0 << 2) - *pp + 4];
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z__[(*n0 << 2) - *pp] = min(d__1,d__2);
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d__1 = z__[(*n0 << 2) - *pp], d__2 = z__[(*i0 << 2) - *pp], d__1 =
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min(d__1,d__2), d__2 = z__[(*i0 << 2) - *pp + 4];
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z__[(*n0 << 2) - *pp] = min(d__1,d__2);
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/* Computing MAX */
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d__1 = *qmax, d__2 = z__[(*i0 << 2) + *pp - 3], d__1 = max(d__1,
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d__2), d__2 = z__[(*i0 << 2) + *pp + 1];
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*qmax = max(d__1,d__2);
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*dmin__ = -0.;
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}
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d__1 = *qmax, d__2 = z__[(*i0 << 2) + *pp - 3], d__1 = max(d__1,
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d__2), d__2 = z__[(*i0 << 2) + *pp + 1];
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*qmax = max(d__1,d__2);
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*dmin__ = -0.;
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}
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}
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/* Choose a shift. */
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dlasq4_(i0, n0, &z__[1], pp, &n0in, dmin__, dmin1, dmin2, dn, dn1, dn2,
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tau, ttype, g);
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dlasq4_(i0, n0, &z__[1], pp, &n0in, dmin__, dmin1, dmin2, dn, dn1, dn2,
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tau, ttype, g);
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/* Call dqds until DMIN > 0. */
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L70:
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dlasq5_(i0, n0, &z__[1], pp, tau, sigma, dmin__, dmin1, dmin2, dn, dn1,
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dn2, ieee, &eps);
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dlasq5_(i0, n0, &z__[1], pp, tau, sigma, dmin__, dmin1, dmin2, dn, dn1,
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dn2, ieee, &eps);
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*ndiv += *n0 - *i0 + 2;
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++(*iter);
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@ -394,55 +394,55 @@ L70:
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/* Success. */
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goto L90;
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goto L90;
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} else if (*dmin__ < 0. && *dmin1 > 0. && z__[(*n0 - 1 << 2) - *pp] < tol
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* (*sigma + *dn1) && abs(*dn) < tol * *sigma) {
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} else if (*dmin__ < 0. && *dmin1 > 0. && z__[(*n0 - 1 << 2) - *pp] < tol
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* (*sigma + *dn1) && abs(*dn) < tol * *sigma) {
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/* Convergence hidden by negative DN. */
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z__[(*n0 - 1 << 2) - *pp + 2] = 0.;
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*dmin__ = 0.;
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goto L90;
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z__[(*n0 - 1 << 2) - *pp + 2] = 0.;
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*dmin__ = 0.;
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goto L90;
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} else if (*dmin__ < 0.) {
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/* TAU too big. Select new TAU and try again. */
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++(*nfail);
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if (*ttype < -22) {
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++(*nfail);
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if (*ttype < -22) {
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/* Failed twice. Play it safe. */
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*tau = 0.;
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} else if (*dmin1 > 0.) {
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*tau = 0.;
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} else if (*dmin1 > 0.) {
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/* Late failure. Gives excellent shift. */
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*tau = (*tau + *dmin__) * (1. - eps * 2.);
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*ttype += -11;
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} else {
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*tau = (*tau + *dmin__) * (1. - eps * 2.);
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*ttype += -11;
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} else {
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/* Early failure. Divide by 4. */
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*tau *= .25;
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*ttype += -12;
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}
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goto L70;
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*tau *= .25;
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*ttype += -12;
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}
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goto L70;
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} else if (disnan_(dmin__)) {
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/* NaN. */
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if (*tau == 0.) {
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goto L80;
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} else {
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*tau = 0.;
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goto L70;
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}
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if (*tau == 0.) {
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goto L80;
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} else {
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*tau = 0.;
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goto L70;
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}
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} else {
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/* Possible underflow. Play it safe. */
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goto L80;
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goto L80;
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}
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/* Risk of underflow. */
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@ -455,12 +455,12 @@ L80:
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L90:
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if (*tau < *sigma) {
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*desig += *tau;
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t = *sigma + *desig;
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*desig -= t - *sigma;
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*desig += *tau;
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t = *sigma + *desig;
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*desig -= t - *sigma;
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} else {
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t = *sigma + *tau;
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*desig = *sigma - (t - *tau) + *desig;
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t = *sigma + *tau;
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*desig = *sigma - (t - *tau) + *desig;
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}
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*sigma = t;
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@ -471,5 +471,5 @@ L90:
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} /* dlasq3_ */
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#ifdef __cplusplus
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}
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}
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#endif
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Block a user