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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/csysv.c
parent01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff)
downloadydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/csysv.c')
-rw-r--r--contrib/libs/clapack/csysv.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/contrib/libs/clapack/csysv.c b/contrib/libs/clapack/csysv.c
new file mode 100644
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+++ b/contrib/libs/clapack/csysv.c
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+/* csysv.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 integer c__1 = 1;
+static integer c_n1 = -1;
+
+/* Subroutine */ int csysv_(char *uplo, integer *n, integer *nrhs, complex *a,
+ integer *lda, integer *ipiv, complex *b, integer *ldb, complex *work,
+ integer *lwork, integer *info)
+{
+ /* System generated locals */
+ integer a_dim1, a_offset, b_dim1, b_offset, i__1;
+
+ /* Local variables */
+ integer nb;
+ extern logical lsame_(char *, char *);
+ extern /* Subroutine */ int xerbla_(char *, integer *);
+ extern integer ilaenv_(integer *, char *, char *, integer *, integer *,
+ integer *, integer *);
+ extern /* Subroutine */ int csytrf_(char *, integer *, complex *, integer
+ *, integer *, complex *, integer *, integer *);
+ integer lwkopt;
+ logical lquery;
+ extern /* Subroutine */ int csytrs_(char *, integer *, integer *, complex
+ *, integer *, integer *, complex *, integer *, integer *);
+
+
+/* -- LAPACK driver routine (version 3.2) -- */
+/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/* November 2006 */
+
+/* .. Scalar Arguments .. */
+/* .. */
+/* .. Array Arguments .. */
+/* .. */
+
+/* Purpose */
+/* ======= */
+
+/* CSYSV computes the solution to a complex system of linear equations */
+/* A * X = B, */
+/* where A is an N-by-N symmetric matrix and X and B are N-by-NRHS */
+/* matrices. */
+
+/* The diagonal pivoting method is used to factor A as */
+/* A = U * D * U**T, if UPLO = 'U', or */
+/* A = L * D * L**T, if UPLO = 'L', */
+/* where U (or L) is a product of permutation and unit upper (lower) */
+/* triangular matrices, and D is symmetric and block diagonal with */
+/* 1-by-1 and 2-by-2 diagonal blocks. The factored form of A is then */
+/* used to solve the system of equations A * X = B. */
+
+/* Arguments */
+/* ========= */
+
+/* UPLO (input) CHARACTER*1 */
+/* = 'U': Upper triangle of A is stored; */
+/* = 'L': Lower triangle of A is stored. */
+
+/* N (input) INTEGER */
+/* The number of linear equations, i.e., the order of the */
+/* matrix A. N >= 0. */
+
+/* NRHS (input) INTEGER */
+/* The number of right hand sides, i.e., the number of columns */
+/* of the matrix B. NRHS >= 0. */
+
+/* A (input/output) COMPLEX array, dimension (LDA,N) */
+/* On entry, the symmetric matrix A. If UPLO = 'U', the leading */
+/* N-by-N upper triangular part of A contains the upper */
+/* triangular part of the matrix A, and the strictly lower */
+/* triangular part of A is not referenced. If UPLO = 'L', the */
+/* leading N-by-N lower triangular part of A contains the lower */
+/* triangular part of the matrix A, and the strictly upper */
+/* triangular part of A is not referenced. */
+
+/* On exit, if INFO = 0, the block diagonal matrix D and the */
+/* multipliers used to obtain the factor U or L from the */
+/* factorization A = U*D*U**T or A = L*D*L**T as computed by */
+/* CSYTRF. */
+
+/* LDA (input) INTEGER */
+/* The leading dimension of the array A. LDA >= max(1,N). */
+
+/* IPIV (output) INTEGER array, dimension (N) */
+/* Details of the interchanges and the block structure of D, as */
+/* determined by CSYTRF. If IPIV(k) > 0, then rows and columns */
+/* k and IPIV(k) were interchanged, and D(k,k) is a 1-by-1 */
+/* diagonal block. If UPLO = 'U' and IPIV(k) = IPIV(k-1) < 0, */
+/* then rows and columns k-1 and -IPIV(k) were interchanged and */
+/* D(k-1:k,k-1:k) is a 2-by-2 diagonal block. If UPLO = 'L' and */
+/* IPIV(k) = IPIV(k+1) < 0, then rows and columns k+1 and */
+/* -IPIV(k) were interchanged and D(k:k+1,k:k+1) is a 2-by-2 */
+/* diagonal block. */
+
+/* B (input/output) COMPLEX array, dimension (LDB,NRHS) */
+/* On entry, the N-by-NRHS right hand side matrix B. */
+/* On exit, if INFO = 0, the N-by-NRHS solution matrix X. */
+
+/* LDB (input) INTEGER */
+/* The leading dimension of the array B. LDB >= max(1,N). */
+
+/* WORK (workspace/output) COMPLEX array, dimension (MAX(1,LWORK)) */
+/* On exit, if INFO = 0, WORK(1) returns the optimal LWORK. */
+
+/* LWORK (input) INTEGER */
+/* The length of WORK. LWORK >= 1, and for best performance */
+/* LWORK >= max(1,N*NB), where NB is the optimal blocksize for */
+/* CSYTRF. */
+
+/* If LWORK = -1, then a workspace query is assumed; the routine */
+/* only calculates the optimal size of the WORK array, returns */
+/* this value as the first entry of the WORK array, and no error */
+/* message related to LWORK is issued by XERBLA. */
+
+/* INFO (output) INTEGER */
+/* = 0: successful exit */
+/* < 0: if INFO = -i, the i-th argument had an illegal value */
+/* > 0: if INFO = i, D(i,i) is exactly zero. The factorization */
+/* has been completed, but the block diagonal matrix D is */
+/* exactly singular, so the solution could not be computed. */
+
+/* ===================================================================== */
+
+/* .. 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;
+ --ipiv;
+ b_dim1 = *ldb;
+ b_offset = 1 + b_dim1;
+ b -= b_offset;
+ --work;
+
+ /* Function Body */
+ *info = 0;
+ lquery = *lwork == -1;
+ if (! lsame_(uplo, "U") && ! lsame_(uplo, "L")) {
+ *info = -1;
+ } else if (*n < 0) {
+ *info = -2;
+ } else if (*nrhs < 0) {
+ *info = -3;
+ } else if (*lda < max(1,*n)) {
+ *info = -5;
+ } else if (*ldb < max(1,*n)) {
+ *info = -8;
+ } else if (*lwork < 1 && ! lquery) {
+ *info = -10;
+ }
+
+ if (*info == 0) {
+ if (*n == 0) {
+ lwkopt = 1;
+ } else {
+ nb = ilaenv_(&c__1, "CSYTRF", uplo, n, &c_n1, &c_n1, &c_n1);
+ lwkopt = *n * nb;
+ }
+ work[1].r = (real) lwkopt, work[1].i = 0.f;
+ }
+
+ if (*info != 0) {
+ i__1 = -(*info);
+ xerbla_("CSYSV ", &i__1);
+ return 0;
+ } else if (lquery) {
+ return 0;
+ }
+
+/* Compute the factorization A = U*D*U' or A = L*D*L'. */
+
+ csytrf_(uplo, n, &a[a_offset], lda, &ipiv[1], &work[1], lwork, info);
+ if (*info == 0) {
+
+/* Solve the system A*X = B, overwriting B with X. */
+
+ csytrs_(uplo, n, nrhs, &a[a_offset], lda, &ipiv[1], &b[b_offset], ldb,
+ info);
+
+ }
+
+ work[1].r = (real) lwkopt, work[1].i = 0.f;
+
+ return 0;
+
+/* End of CSYSV */
+
+} /* csysv_ */