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authorshmel1k <shmel1k@ydb.tech>2022-09-02 12:44:59 +0300
committershmel1k <shmel1k@ydb.tech>2022-09-02 12:44:59 +0300
commit90d450f74722da7859d6f510a869f6c6908fd12f (patch)
tree538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/clapack/clarz.c
parent01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff)
downloadydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/clarz.c')
-rw-r--r--contrib/libs/clapack/clarz.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/contrib/libs/clapack/clarz.c b/contrib/libs/clapack/clarz.c
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+/* clarz.f -- translated by f2c (version 20061008).
+ 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
+*/
+
+#include "f2c.h"
+#include "blaswrap.h"
+
+/* Table of constant values */
+
+static complex c_b1 = {1.f,0.f};
+static integer c__1 = 1;
+
+/* Subroutine */ int clarz_(char *side, integer *m, integer *n, integer *l,
+ complex *v, integer *incv, complex *tau, complex *c__, integer *ldc,
+ complex *work)
+{
+ /* System generated locals */
+ integer c_dim1, c_offset;
+ complex q__1;
+
+ /* Local variables */
+ extern /* Subroutine */ int cgerc_(integer *, integer *, complex *,
+ complex *, integer *, complex *, integer *, complex *, integer *),
+ cgemv_(char *, integer *, integer *, complex *, complex *,
+ integer *, complex *, integer *, complex *, complex *, integer *);
+ extern logical lsame_(char *, char *);
+ extern /* Subroutine */ int cgeru_(integer *, integer *, complex *,
+ complex *, integer *, complex *, integer *, complex *, integer *),
+ ccopy_(integer *, complex *, integer *, complex *, integer *),
+ caxpy_(integer *, complex *, complex *, integer *, complex *,
+ integer *), clacgv_(integer *, complex *, integer *);
+
+
+/* -- LAPACK routine (version 3.2) -- */
+/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/* November 2006 */
+
+/* .. Scalar Arguments .. */
+/* .. */
+/* .. Array Arguments .. */
+/* .. */
+
+/* Purpose */
+/* ======= */
+
+/* CLARZ applies a complex elementary reflector H to a complex */
+/* M-by-N matrix C, from either the left or the right. H is represented */
+/* in the form */
+
+/* H = I - tau * v * v' */
+
+/* where tau is a complex scalar and v is a complex vector. */
+
+/* If tau = 0, then H is taken to be the unit matrix. */
+
+/* To apply H' (the conjugate transpose of H), supply conjg(tau) instead */
+/* tau. */
+
+/* H is a product of k elementary reflectors as returned by CTZRZF. */
+
+/* Arguments */
+/* ========= */
+
+/* SIDE (input) CHARACTER*1 */
+/* = 'L': form H * C */
+/* = 'R': form C * H */
+
+/* M (input) INTEGER */
+/* The number of rows of the matrix C. */
+
+/* N (input) INTEGER */
+/* The number of columns of the matrix C. */
+
+/* L (input) INTEGER */
+/* The number of entries of the vector V containing */
+/* the meaningful part of the Householder vectors. */
+/* If SIDE = 'L', M >= L >= 0, if SIDE = 'R', N >= L >= 0. */
+
+/* V (input) COMPLEX array, dimension (1+(L-1)*abs(INCV)) */
+/* The vector v in the representation of H as returned by */
+/* CTZRZF. V is not used if TAU = 0. */
+
+/* INCV (input) INTEGER */
+/* The increment between elements of v. INCV <> 0. */
+
+/* TAU (input) COMPLEX */
+/* The value tau in the representation of H. */
+
+/* C (input/output) COMPLEX array, dimension (LDC,N) */
+/* On entry, the M-by-N matrix C. */
+/* On exit, C is overwritten by the matrix H * C if SIDE = 'L', */
+/* or C * H if SIDE = 'R'. */
+
+/* LDC (input) INTEGER */
+/* The leading dimension of the array C. LDC >= max(1,M). */
+
+/* WORK (workspace) COMPLEX array, dimension */
+/* (N) if SIDE = 'L' */
+/* or (M) if SIDE = 'R' */
+
+/* Further Details */
+/* =============== */
+
+/* Based on contributions by */
+/* A. Petitet, Computer Science Dept., Univ. of Tenn., Knoxville, USA */
+
+/* ===================================================================== */
+
+/* .. Parameters .. */
+/* .. */
+/* .. External Subroutines .. */
+/* .. */
+/* .. External Functions .. */
+/* .. */
+/* .. Executable Statements .. */
+
+ /* Parameter adjustments */
+ --v;
+ c_dim1 = *ldc;
+ c_offset = 1 + c_dim1;
+ c__ -= c_offset;
+ --work;
+
+ /* Function Body */
+ if (lsame_(side, "L")) {
+
+/* Form H * C */
+
+ if (tau->r != 0.f || tau->i != 0.f) {
+
+/* w( 1:n ) = conjg( C( 1, 1:n ) ) */
+
+ ccopy_(n, &c__[c_offset], ldc, &work[1], &c__1);
+ clacgv_(n, &work[1], &c__1);
+
+/* w( 1:n ) = conjg( w( 1:n ) + C( m-l+1:m, 1:n )' * v( 1:l ) ) */
+
+ cgemv_("Conjugate transpose", l, n, &c_b1, &c__[*m - *l + 1 +
+ c_dim1], ldc, &v[1], incv, &c_b1, &work[1], &c__1);
+ clacgv_(n, &work[1], &c__1);
+
+/* C( 1, 1:n ) = C( 1, 1:n ) - tau * w( 1:n ) */
+
+ q__1.r = -tau->r, q__1.i = -tau->i;
+ caxpy_(n, &q__1, &work[1], &c__1, &c__[c_offset], ldc);
+
+/* C( m-l+1:m, 1:n ) = C( m-l+1:m, 1:n ) - ... */
+/* tau * v( 1:l ) * conjg( w( 1:n )' ) */
+
+ q__1.r = -tau->r, q__1.i = -tau->i;
+ cgeru_(l, n, &q__1, &v[1], incv, &work[1], &c__1, &c__[*m - *l +
+ 1 + c_dim1], ldc);
+ }
+
+ } else {
+
+/* Form C * H */
+
+ if (tau->r != 0.f || tau->i != 0.f) {
+
+/* w( 1:m ) = C( 1:m, 1 ) */
+
+ ccopy_(m, &c__[c_offset], &c__1, &work[1], &c__1);
+
+/* w( 1:m ) = w( 1:m ) + C( 1:m, n-l+1:n, 1:n ) * v( 1:l ) */
+
+ cgemv_("No transpose", m, l, &c_b1, &c__[(*n - *l + 1) * c_dim1 +
+ 1], ldc, &v[1], incv, &c_b1, &work[1], &c__1);
+
+/* C( 1:m, 1 ) = C( 1:m, 1 ) - tau * w( 1:m ) */
+
+ q__1.r = -tau->r, q__1.i = -tau->i;
+ caxpy_(m, &q__1, &work[1], &c__1, &c__[c_offset], &c__1);
+
+/* C( 1:m, n-l+1:n ) = C( 1:m, n-l+1:n ) - ... */
+/* tau * w( 1:m ) * v( 1:l )' */
+
+ q__1.r = -tau->r, q__1.i = -tau->i;
+ cgerc_(m, l, &q__1, &work[1], &c__1, &v[1], incv, &c__[(*n - *l +
+ 1) * c_dim1 + 1], ldc);
+
+ }
+
+ }
+
+ return 0;
+
+/* End of CLARZ */
+
+} /* clarz_ */