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remove redundant comments from generated C++ files. clean up with clang-format.

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This commit is contained in:
Axel Kohlmeyer
2022-12-28 16:31:50 -05:00
parent f157ba2389
commit 57713cf9a3
211 changed files with 6255 additions and 54891 deletions
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365
lib/linalg/dlasq3.cpp
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@ -1,272 +1,37 @@
/* fortran/dlasq3.f -- translated by f2c (version 20200916).
You must link the resulting object file with libf2c:
on Microsoft Windows system, link with libf2c.lib;
on Linux or Unix systems, link with .../path/to/libf2c.a -lm
or, if you install libf2c.a in a standard place, with -lf2c -lm
-- in that order, at the end of the command line, as in
cc *.o -lf2c -lm
Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
http://www.netlib.org/f2c/libf2c.zip
*/
#ifdef __cplusplus
extern "C" {
#endif
#include "lmp_f2c.h"
/* > \brief \b DLASQ3 checks for deflation, computes a shift and calls dqds. Used by sbdsqr. */
/* =========== DOCUMENTATION =========== */
/* Online html documentation available at */
/* http://www.netlib.org/lapack/explore-html/ */
/* > \htmlonly */
/* > Download DLASQ3 + dependencies */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlasq3.
f"> */
/* > [TGZ]</a> */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlasq3.
f"> */
/* > [ZIP]</a> */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlasq3.
f"> */
/* > [TXT]</a> */
/* > \endhtmlonly */
/* Definition: */
/* =========== */
/* SUBROUTINE DLASQ3( I0, N0, Z, PP, DMIN, SIGMA, DESIG, QMAX, NFAIL, */
/* ITER, NDIV, IEEE, TTYPE, DMIN1, DMIN2, DN, DN1, */
/* DN2, G, TAU ) */
/* .. Scalar Arguments .. */
/* LOGICAL IEEE */
/* INTEGER I0, ITER, N0, NDIV, NFAIL, PP */
/* DOUBLE PRECISION DESIG, DMIN, DMIN1, DMIN2, DN, DN1, DN2, G, */
/* $ QMAX, SIGMA, TAU */
/* .. */
/* .. Array Arguments .. */
/* DOUBLE PRECISION Z( * ) */
/* .. */
/* > \par Purpose: */
/* ============= */
/* > */
/* > \verbatim */
/* > */
/* > DLASQ3 checks for deflation, computes a shift (TAU) and calls dqds. */
/* > In case of failure it changes shifts, and tries again until output */
/* > is positive. */
/* > \endverbatim */
/* Arguments: */
/* ========== */
/* > \param[in] I0 */
/* > \verbatim */
/* > I0 is INTEGER */
/* > First index. */
/* > \endverbatim */
/* > */
/* > \param[in,out] N0 */
/* > \verbatim */
/* > N0 is INTEGER */
/* > Last index. */
/* > \endverbatim */
/* > */
/* > \param[in,out] Z */
/* > \verbatim */
/* > Z is DOUBLE PRECISION array, dimension ( 4*N0 ) */
/* > Z holds the qd array. */
/* > \endverbatim */
/* > */
/* > \param[in,out] PP */
/* > \verbatim */
/* > PP is INTEGER */
/* > PP=0 for ping, PP=1 for pong. */
/* > PP=2 indicates that flipping was applied to the Z array */
/* > and that the initial tests for deflation should not be */
/* > performed. */
/* > \endverbatim */
/* > */
/* > \param[out] DMIN */
/* > \verbatim */
/* > DMIN is DOUBLE PRECISION */
/* > Minimum value of d. */
/* > \endverbatim */
/* > */
/* > \param[out] SIGMA */
/* > \verbatim */
/* > SIGMA is DOUBLE PRECISION */
/* > Sum of shifts used in current segment. */
/* > \endverbatim */
/* > */
/* > \param[in,out] DESIG */
/* > \verbatim */
/* > DESIG is DOUBLE PRECISION */
/* > Lower order part of SIGMA */
/* > \endverbatim */
/* > */
/* > \param[in] QMAX */
/* > \verbatim */
/* > QMAX is DOUBLE PRECISION */
/* > Maximum value of q. */
/* > \endverbatim */
/* > */
/* > \param[in,out] NFAIL */
/* > \verbatim */
/* > NFAIL is INTEGER */
/* > Increment NFAIL by 1 each time the shift was too big. */
/* > \endverbatim */
/* > */
/* > \param[in,out] ITER */
/* > \verbatim */
/* > ITER is INTEGER */
/* > Increment ITER by 1 for each iteration. */
/* > \endverbatim */
/* > */
/* > \param[in,out] NDIV */
/* > \verbatim */
/* > NDIV is INTEGER */
/* > Increment NDIV by 1 for each division. */
/* > \endverbatim */
/* > */
/* > \param[in] IEEE */
/* > \verbatim */
/* > IEEE is LOGICAL */
/* > Flag for IEEE or non IEEE arithmetic (passed to DLASQ5). */
/* > \endverbatim */
/* > */
/* > \param[in,out] TTYPE */
/* > \verbatim */
/* > TTYPE is INTEGER */
/* > Shift type. */
/* > \endverbatim */
/* > */
/* > \param[in,out] DMIN1 */
/* > \verbatim */
/* > DMIN1 is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] DMIN2 */
/* > \verbatim */
/* > DMIN2 is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] DN */
/* > \verbatim */
/* > DN is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] DN1 */
/* > \verbatim */
/* > DN1 is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] DN2 */
/* > \verbatim */
/* > DN2 is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] G */
/* > \verbatim */
/* > G is DOUBLE PRECISION */
/* > \endverbatim */
/* > */
/* > \param[in,out] TAU */
/* > \verbatim */
/* > TAU is DOUBLE PRECISION */
/* > */
/* > These are passed as arguments in order to save their values */
/* > between calls to DLASQ3. */
/* > \endverbatim */
/* Authors: */
/* ======== */
/* > \author Univ. of Tennessee */
/* > \author Univ. of California Berkeley */
/* > \author Univ. of Colorado Denver */
/* > \author NAG Ltd. */
/* > \ingroup auxOTHERcomputational */
/* ===================================================================== */
/* Subroutine */ int dlasq3_(integer *i0, integer *n0, doublereal *z__,
integer *pp, doublereal *dmin__, doublereal *sigma, doublereal *desig,
doublereal *qmax, integer *nfail, integer *iter, integer *ndiv,
logical *ieee, integer *ttype, doublereal *dmin1, doublereal *dmin2,
doublereal *dn, doublereal *dn1, doublereal *dn2, doublereal *g,
doublereal *tau)
int dlasq3_(integer *i0, integer *n0, doublereal *z__, integer *pp, doublereal *dmin__,
doublereal *sigma, doublereal *desig, doublereal *qmax, integer *nfail, integer *iter,
integer *ndiv, logical *ieee, integer *ttype, doublereal *dmin1, doublereal *dmin2,
doublereal *dn, doublereal *dn1, doublereal *dn2, doublereal *g, doublereal *tau)
{
/* System generated locals */
integer i__1;
doublereal d__1, d__2;
/* Builtin functions */
double sqrt(doublereal);
/* Local variables */
doublereal s, t;
integer j4, nn;
doublereal eps, tol;
integer n0in, ipn4;
doublereal tol2, temp;
extern /* Subroutine */ int dlasq4_(integer *, integer *, doublereal *,
integer *, integer *, doublereal *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, doublereal *, integer *,
doublereal *), dlasq5_(integer *, integer *, doublereal *,
integer *, doublereal *, doublereal *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, doublereal *, logical *
, doublereal *), dlasq6_(integer *, integer *, doublereal *,
integer *, doublereal *, doublereal *, doublereal *, doublereal *,
doublereal *, doublereal *);
extern int dlasq4_(integer *, integer *, doublereal *, integer *, integer *, doublereal *,
doublereal *, doublereal *, doublereal *, doublereal *, doublereal *,
doublereal *, integer *, doublereal *),
dlasq5_(integer *, integer *, doublereal *, integer *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, doublereal *, doublereal *, doublereal *,
logical *, doublereal *),
dlasq6_(integer *, integer *, doublereal *, integer *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, doublereal *);
extern doublereal dlamch_(char *, ftnlen);
extern logical disnan_(doublereal *);
/* -- LAPACK computational routine -- */
/* -- LAPACK is a software package provided by Univ. of Tennessee, -- */
/* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- */
/* .. Scalar Arguments .. */
/* .. */
/* .. Array Arguments .. */
/* .. */
/* ===================================================================== */
/* .. Parameters .. */
/* .. */
/* .. Local Scalars .. */
/* .. */
/* .. External Subroutines .. */
/* .. */
/* .. External Function .. */
/* .. */
/* .. Intrinsic Functions .. */
/* .. */
/* .. Executable Statements .. */
/* Parameter adjustments */
--z__;
/* Function Body */
n0in = *n0;
eps = dlamch_((char *)"Precision", (ftnlen)9);
tol = eps * 100.;
/* Computing 2nd power */
d__1 = tol;
tol2 = d__1 * d__1;
/* Check for deflation. */
L10:
if (*n0 < *i0) {
return 0;
}
@ -277,31 +42,19 @@ L10:
if (*n0 == *i0 + 1) {
goto L40;
}
/* Check whether E(N0-1) is negligible, 1 eigenvalue. */
if (z__[nn - 5] > tol2 * (*sigma + z__[nn - 3]) && z__[nn - (*pp << 1) -
4] > tol2 * z__[nn - 7]) {
if (z__[nn - 5] > tol2 * (*sigma + z__[nn - 3]) &&
z__[nn - (*pp << 1) - 4] > tol2 * z__[nn - 7]) {
goto L30;
}
L20:
z__[(*n0 << 2) - 3] = z__[(*n0 << 2) + *pp - 3] + *sigma;
--(*n0);
goto L10;
/* Check whether E(N0-2) is negligible, 2 eigenvalues. */
L30:
if (z__[nn - 9] > tol2 * *sigma && z__[nn - (*pp << 1) - 8] > tol2 * z__[
nn - 11]) {
if (z__[nn - 9] > tol2 * *sigma && z__[nn - (*pp << 1) - 8] > tol2 * z__[nn - 11]) {
goto L50;
}
L40:
if (z__[nn - 3] > z__[nn - 7]) {
s = z__[nn - 3];
z__[nn - 3] = z__[nn - 7];
@ -323,14 +76,10 @@ L40:
z__[(*n0 << 2) - 3] = z__[nn - 3] + *sigma;
*n0 += -2;
goto L10;
L50:
if (*pp == 2) {
*pp = 0;
}
/* Reverse the qd-array, if warranted. */
if (*dmin__ <= 0. || *n0 < n0in) {
if (z__[(*i0 << 2) + *pp - 3] * 1.5 < z__[(*n0 << 2) + *pp - 3]) {
ipn4 = *i0 + *n0 << 2;
@ -348,90 +97,50 @@ L50:
temp = z__[j4];
z__[j4] = z__[ipn4 - j4 - 4];
z__[ipn4 - j4 - 4] = temp;
/* L60: */
}
if (*n0 - *i0 <= 4) {
z__[(*n0 << 2) + *pp - 1] = z__[(*i0 << 2) + *pp - 1];
z__[(*n0 << 2) - *pp] = z__[(*i0 << 2) - *pp];
}
/* Computing MIN */
d__1 = *dmin2, d__2 = z__[(*n0 << 2) + *pp - 1];
*dmin2 = min(d__1,d__2);
/* Computing MIN */
d__1 = z__[(*n0 << 2) + *pp - 1], d__2 = z__[(*i0 << 2) + *pp - 1]
, d__1 = min(d__1,d__2), d__2 = z__[(*i0 << 2) + *pp + 3];
z__[(*n0 << 2) + *pp - 1] = min(d__1,d__2);
/* Computing MIN */
d__1 = z__[(*n0 << 2) - *pp], d__2 = z__[(*i0 << 2) - *pp], d__1 =
min(d__1,d__2), d__2 = z__[(*i0 << 2) - *pp + 4];
z__[(*n0 << 2) - *pp] = min(d__1,d__2);
/* Computing MAX */
d__1 = *qmax, d__2 = z__[(*i0 << 2) + *pp - 3], d__1 = max(d__1,
d__2), d__2 = z__[(*i0 << 2) + *pp + 1];
*qmax = max(d__1,d__2);
*dmin2 = min(d__1, d__2);
d__1 = z__[(*n0 << 2) + *pp - 1], d__2 = z__[(*i0 << 2) + *pp - 1],
d__1 = min(d__1, d__2), d__2 = z__[(*i0 << 2) + *pp + 3];
z__[(*n0 << 2) + *pp - 1] = min(d__1, d__2);
d__1 = z__[(*n0 << 2) - *pp], d__2 = z__[(*i0 << 2) - *pp], d__1 = min(d__1, d__2),
d__2 = z__[(*i0 << 2) - *pp + 4];
z__[(*n0 << 2) - *pp] = min(d__1, d__2);
d__1 = *qmax, d__2 = z__[(*i0 << 2) + *pp - 3], d__1 = max(d__1, d__2),
d__2 = z__[(*i0 << 2) + *pp + 1];
*qmax = max(d__1, d__2);
*dmin__ = -0.;
}
}
/* Choose a shift. */
dlasq4_(i0, n0, &z__[1], pp, &n0in, dmin__, dmin1, dmin2, dn, dn1, dn2,
tau, ttype, g);
/* Call dqds until DMIN > 0. */
dlasq4_(i0, n0, &z__[1], pp, &n0in, dmin__, dmin1, dmin2, dn, dn1, dn2, tau, ttype, g);
L70:
dlasq5_(i0, n0, &z__[1], pp, tau, sigma, dmin__, dmin1, dmin2, dn, dn1,
dn2, ieee, &eps);
dlasq5_(i0, n0, &z__[1], pp, tau, sigma, dmin__, dmin1, dmin2, dn, dn1, dn2, ieee, &eps);
*ndiv += *n0 - *i0 + 2;
++(*iter);
/* Check status. */
if (*dmin__ >= 0. && *dmin1 >= 0.) {
/* Success. */
goto L90;
} else if (*dmin__ < 0. && *dmin1 > 0. && z__[(*n0 - 1 << 2) - *pp] < tol
* (*sigma + *dn1) && abs(*dn) < tol * *sigma) {
/* Convergence hidden by negative DN. */
} else if (*dmin__ < 0. && *dmin1 > 0. && z__[(*n0 - 1 << 2) - *pp] < tol * (*sigma + *dn1) &&
abs(*dn) < tol * *sigma) {
z__[(*n0 - 1 << 2) - *pp + 2] = 0.;
*dmin__ = 0.;
goto L90;
} else if (*dmin__ < 0.) {
/* TAU too big. Select new TAU and try again. */
++(*nfail);
if (*ttype < -22) {
/* Failed twice. Play it safe. */
*tau = 0.;
} else if (*dmin1 > 0.) {
/* Late failure. Gives excellent shift. */
*tau = (*tau + *dmin__) * (1. - eps * 2.);
*ttype += -11;
} else {
/* Early failure. Divide by 4. */
*tau *= .25;
*ttype += -12;
}
goto L70;
} else if (disnan_(dmin__)) {
/* NaN. */
if (*tau == 0.) {
goto L80;
} else {
@ -439,20 +148,13 @@ L70:
goto L70;
}
} else {
/* Possible underflow. Play it safe. */
goto L80;
}
/* Risk of underflow. */
L80:
dlasq6_(i0, n0, &z__[1], pp, dmin__, dmin1, dmin2, dn, dn1, dn2);
*ndiv += *n0 - *i0 + 2;
++(*iter);
*tau = 0.;
L90:
if (*tau < *sigma) {
*desig += *tau;
@ -463,13 +165,8 @@ L90:
*desig = *sigma - (t - *tau) + *desig;
}
*sigma = t;
return 0;
/* End of DLASQ3 */
} /* dlasq3_ */
}
#ifdef __cplusplus
}
}
#endif