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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/cpptri.c
parent01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff)
downloadydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz
[] add metering mode to CLI
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diff --git a/contrib/libs/clapack/cpptri.c b/contrib/libs/clapack/cpptri.c
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+/* cpptri.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_b8 = 1.f;
+static integer c__1 = 1;
+
+/* Subroutine */ int cpptri_(char *uplo, integer *n, complex *ap, integer *
+ info)
+{
+ /* System generated locals */
+ integer i__1, i__2, i__3;
+ real r__1;
+ complex q__1;
+
+ /* Local variables */
+ integer j, jc, jj;
+ real ajj;
+ integer jjn;
+ extern /* Subroutine */ int chpr_(char *, integer *, real *, complex *,
+ integer *, complex *);
+ extern /* Complex */ VOID cdotc_(complex *, integer *, complex *, integer
+ *, complex *, integer *);
+ extern logical lsame_(char *, char *);
+ extern /* Subroutine */ int ctpmv_(char *, char *, char *, integer *,
+ complex *, complex *, integer *);
+ logical upper;
+ extern /* Subroutine */ int csscal_(integer *, real *, complex *, integer
+ *), xerbla_(char *, integer *), ctptri_(char *, char *,
+ 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 */
+/* ======= */
+
+/* CPPTRI computes the inverse of a complex Hermitian positive definite */
+/* matrix A using the Cholesky factorization A = U**H*U or A = L*L**H */
+/* computed by CPPTRF. */
+
+/* Arguments */
+/* ========= */
+
+/* UPLO (input) CHARACTER*1 */
+/* = 'U': Upper triangular factor is stored in AP; */
+/* = 'L': Lower triangular factor is stored in AP. */
+
+/* N (input) INTEGER */
+/* The order of the matrix A. N >= 0. */
+
+/* AP (input/output) COMPLEX array, dimension (N*(N+1)/2) */
+/* On entry, the triangular factor U or L from the Cholesky */
+/* factorization A = U**H*U or A = L*L**H, packed columnwise as */
+/* a linear array. The j-th column of U or L is stored in the */
+/* array AP as follows: */
+/* if UPLO = 'U', AP(i + (j-1)*j/2) = U(i,j) for 1<=i<=j; */
+/* if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = L(i,j) for j<=i<=n. */
+
+/* On exit, the upper or lower triangle of the (Hermitian) */
+/* inverse of A, overwriting the input factor U or L. */
+
+/* INFO (output) INTEGER */
+/* = 0: successful exit */
+/* < 0: if INFO = -i, the i-th argument had an illegal value */
+/* > 0: if INFO = i, the (i,i) element of the factor U or L is */
+/* zero, and the inverse could not be computed. */
+
+/* ===================================================================== */
+
+/* .. Parameters .. */
+/* .. */
+/* .. Local Scalars .. */
+/* .. */
+/* .. External Functions .. */
+/* .. */
+/* .. External Subroutines .. */
+/* .. */
+/* .. Intrinsic Functions .. */
+/* .. */
+/* .. Executable Statements .. */
+
+/* Test the input parameters. */
+
+ /* Parameter adjustments */
+ --ap;
+
+ /* Function Body */
+ *info = 0;
+ upper = lsame_(uplo, "U");
+ if (! upper && ! lsame_(uplo, "L")) {
+ *info = -1;
+ } else if (*n < 0) {
+ *info = -2;
+ }
+ if (*info != 0) {
+ i__1 = -(*info);
+ xerbla_("CPPTRI", &i__1);
+ return 0;
+ }
+
+/* Quick return if possible */
+
+ if (*n == 0) {
+ return 0;
+ }
+
+/* Invert the triangular Cholesky factor U or L. */
+
+ ctptri_(uplo, "Non-unit", n, &ap[1], info);
+ if (*info > 0) {
+ return 0;
+ }
+ if (upper) {
+
+/* Compute the product inv(U) * inv(U)'. */
+
+ jj = 0;
+ i__1 = *n;
+ for (j = 1; j <= i__1; ++j) {
+ jc = jj + 1;
+ jj += j;
+ if (j > 1) {
+ i__2 = j - 1;
+ chpr_("Upper", &i__2, &c_b8, &ap[jc], &c__1, &ap[1]);
+ }
+ i__2 = jj;
+ ajj = ap[i__2].r;
+ csscal_(&j, &ajj, &ap[jc], &c__1);
+/* L10: */
+ }
+
+ } else {
+
+/* Compute the product inv(L)' * inv(L). */
+
+ jj = 1;
+ i__1 = *n;
+ for (j = 1; j <= i__1; ++j) {
+ jjn = jj + *n - j + 1;
+ i__2 = jj;
+ i__3 = *n - j + 1;
+ cdotc_(&q__1, &i__3, &ap[jj], &c__1, &ap[jj], &c__1);
+ r__1 = q__1.r;
+ ap[i__2].r = r__1, ap[i__2].i = 0.f;
+ if (j < *n) {
+ i__2 = *n - j;
+ ctpmv_("Lower", "Conjugate transpose", "Non-unit", &i__2, &ap[
+ jjn], &ap[jj + 1], &c__1);
+ }
+ jj = jjn;
+/* L20: */
+ }
+ }
+
+ return 0;
+
+/* End of CPPTRI */
+
+} /* cpptri_ */