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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/slauu2.c
parent01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff)
downloadydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/slauu2.c')
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1 files changed, 180 insertions, 0 deletions
diff --git a/contrib/libs/clapack/slauu2.c b/contrib/libs/clapack/slauu2.c
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+/* slauu2.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 real c_b7 = 1.f;
+static integer c__1 = 1;
+
+/* Subroutine */ int slauu2_(char *uplo, integer *n, real *a, integer *lda,
+ integer *info)
+{
+ /* System generated locals */
+ integer a_dim1, a_offset, i__1, i__2, i__3;
+
+ /* Local variables */
+ integer i__;
+ real aii;
+ extern doublereal sdot_(integer *, real *, integer *, real *, integer *);
+ extern logical lsame_(char *, char *);
+ extern /* Subroutine */ int sscal_(integer *, real *, real *, integer *),
+ sgemv_(char *, integer *, integer *, real *, real *, integer *,
+ real *, integer *, real *, real *, integer *);
+ logical upper;
+ extern /* Subroutine */ int xerbla_(char *, integer *);
+
+
+/* -- LAPACK auxiliary routine (version 3.2) -- */
+/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/* November 2006 */
+
+/* .. Scalar Arguments .. */
+/* .. */
+/* .. Array Arguments .. */
+/* .. */
+
+/* Purpose */
+/* ======= */
+
+/* SLAUU2 computes the product U * U' or L' * L, where the triangular */
+/* factor U or L is stored in the upper or lower triangular part of */
+/* the array A. */
+
+/* If UPLO = 'U' or 'u' then the upper triangle of the result is stored, */
+/* overwriting the factor U in A. */
+/* If UPLO = 'L' or 'l' then the lower triangle of the result is stored, */
+/* overwriting the factor L in A. */
+
+/* This is the unblocked form of the algorithm, calling Level 2 BLAS. */
+
+/* Arguments */
+/* ========= */
+
+/* UPLO (input) CHARACTER*1 */
+/* Specifies whether the triangular factor stored in the array A */
+/* is upper or lower triangular: */
+/* = 'U': Upper triangular */
+/* = 'L': Lower triangular */
+
+/* N (input) INTEGER */
+/* The order of the triangular factor U or L. N >= 0. */
+
+/* A (input/output) REAL array, dimension (LDA,N) */
+/* On entry, the triangular factor U or L. */
+/* On exit, if UPLO = 'U', the upper triangle of A is */
+/* overwritten with the upper triangle of the product U * U'; */
+/* if UPLO = 'L', the lower triangle of A is overwritten with */
+/* the lower triangle of the product L' * L. */
+
+/* LDA (input) INTEGER */
+/* The leading dimension of the array A. LDA >= max(1,N). */
+
+/* INFO (output) INTEGER */
+/* = 0: successful exit */
+/* < 0: if INFO = -k, the k-th argument had an illegal value */
+
+/* ===================================================================== */
+
+/* .. Parameters .. */
+/* .. */
+/* .. Local Scalars .. */
+/* .. */
+/* .. External Functions .. */
+/* .. */
+/* .. External Subroutines .. */
+/* .. */
+/* .. Intrinsic Functions .. */
+/* .. */
+/* .. Executable Statements .. */
+
+/* Test the input parameters. */
+
+ /* Parameter adjustments */
+ a_dim1 = *lda;
+ a_offset = 1 + a_dim1;
+ a -= a_offset;
+
+ /* Function Body */
+ *info = 0;
+ upper = lsame_(uplo, "U");
+ if (! upper && ! lsame_(uplo, "L")) {
+ *info = -1;
+ } else if (*n < 0) {
+ *info = -2;
+ } else if (*lda < max(1,*n)) {
+ *info = -4;
+ }
+ if (*info != 0) {
+ i__1 = -(*info);
+ xerbla_("SLAUU2", &i__1);
+ return 0;
+ }
+
+/* Quick return if possible */
+
+ if (*n == 0) {
+ return 0;
+ }
+
+ if (upper) {
+
+/* Compute the product U * U'. */
+
+ i__1 = *n;
+ for (i__ = 1; i__ <= i__1; ++i__) {
+ aii = a[i__ + i__ * a_dim1];
+ if (i__ < *n) {
+ i__2 = *n - i__ + 1;
+ a[i__ + i__ * a_dim1] = sdot_(&i__2, &a[i__ + i__ * a_dim1],
+ lda, &a[i__ + i__ * a_dim1], lda);
+ i__2 = i__ - 1;
+ i__3 = *n - i__;
+ sgemv_("No transpose", &i__2, &i__3, &c_b7, &a[(i__ + 1) *
+ a_dim1 + 1], lda, &a[i__ + (i__ + 1) * a_dim1], lda, &
+ aii, &a[i__ * a_dim1 + 1], &c__1);
+ } else {
+ sscal_(&i__, &aii, &a[i__ * a_dim1 + 1], &c__1);
+ }
+/* L10: */
+ }
+
+ } else {
+
+/* Compute the product L' * L. */
+
+ i__1 = *n;
+ for (i__ = 1; i__ <= i__1; ++i__) {
+ aii = a[i__ + i__ * a_dim1];
+ if (i__ < *n) {
+ i__2 = *n - i__ + 1;
+ a[i__ + i__ * a_dim1] = sdot_(&i__2, &a[i__ + i__ * a_dim1], &
+ c__1, &a[i__ + i__ * a_dim1], &c__1);
+ i__2 = *n - i__;
+ i__3 = i__ - 1;
+ sgemv_("Transpose", &i__2, &i__3, &c_b7, &a[i__ + 1 + a_dim1],
+ lda, &a[i__ + 1 + i__ * a_dim1], &c__1, &aii, &a[i__
+ + a_dim1], lda);
+ } else {
+ sscal_(&i__, &aii, &a[i__ + a_dim1], lda);
+ }
+/* L20: */
+ }
+ }
+
+ return 0;
+
+/* End of SLAUU2 */
+
+} /* slauu2_ */