diff options
author | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
---|---|---|
committer | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
commit | 90d450f74722da7859d6f510a869f6c6908fd12f (patch) | |
tree | 538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/clapack/dlarzb.c | |
parent | 01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff) | |
download | ydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz |
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/dlarzb.c')
-rw-r--r-- | contrib/libs/clapack/dlarzb.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/contrib/libs/clapack/dlarzb.c b/contrib/libs/clapack/dlarzb.c new file mode 100644 index 0000000000..2cf3e7fae2 --- /dev/null +++ b/contrib/libs/clapack/dlarzb.c @@ -0,0 +1,288 @@ +/* dlarzb.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 doublereal c_b13 = 1.; +static doublereal c_b23 = -1.; + +/* Subroutine */ int dlarzb_(char *side, char *trans, char *direct, char * + storev, integer *m, integer *n, integer *k, integer *l, doublereal *v, + integer *ldv, doublereal *t, integer *ldt, doublereal *c__, integer * + ldc, doublereal *work, integer *ldwork) +{ + /* System generated locals */ + integer c_dim1, c_offset, t_dim1, t_offset, v_dim1, v_offset, work_dim1, + work_offset, i__1, i__2; + + /* Local variables */ + integer i__, j, info; + extern /* Subroutine */ int dgemm_(char *, char *, integer *, integer *, + integer *, doublereal *, doublereal *, integer *, doublereal *, + integer *, doublereal *, doublereal *, integer *); + extern logical lsame_(char *, char *); + extern /* Subroutine */ int dcopy_(integer *, doublereal *, integer *, + doublereal *, integer *), dtrmm_(char *, char *, char *, char *, + integer *, integer *, doublereal *, doublereal *, integer *, + doublereal *, integer *), xerbla_( + char *, integer *); + char transt[1]; + + +/* -- LAPACK routine (version 3.2) -- */ +/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */ +/* November 2006 */ + +/* .. Scalar Arguments .. */ +/* .. */ +/* .. Array Arguments .. */ +/* .. */ + +/* Purpose */ +/* ======= */ + +/* DLARZB applies a real block reflector H or its transpose H**T to */ +/* a real distributed M-by-N C from the left or the right. */ + +/* Currently, only STOREV = 'R' and DIRECT = 'B' are supported. */ + +/* Arguments */ +/* ========= */ + +/* SIDE (input) CHARACTER*1 */ +/* = 'L': apply H or H' from the Left */ +/* = 'R': apply H or H' from the Right */ + +/* TRANS (input) CHARACTER*1 */ +/* = 'N': apply H (No transpose) */ +/* = 'C': apply H' (Transpose) */ + +/* DIRECT (input) CHARACTER*1 */ +/* Indicates how H is formed from a product of elementary */ +/* reflectors */ +/* = 'F': H = H(1) H(2) . . . H(k) (Forward, not supported yet) */ +/* = 'B': H = H(k) . . . H(2) H(1) (Backward) */ + +/* STOREV (input) CHARACTER*1 */ +/* Indicates how the vectors which define the elementary */ +/* reflectors are stored: */ +/* = 'C': Columnwise (not supported yet) */ +/* = 'R': Rowwise */ + +/* M (input) INTEGER */ +/* The number of rows of the matrix C. */ + +/* N (input) INTEGER */ +/* The number of columns of the matrix C. */ + +/* K (input) INTEGER */ +/* The order of the matrix T (= the number of elementary */ +/* reflectors whose product defines the block reflector). */ + +/* L (input) INTEGER */ +/* The number of columns of the matrix V containing the */ +/* meaningful part of the Householder reflectors. */ +/* If SIDE = 'L', M >= L >= 0, if SIDE = 'R', N >= L >= 0. */ + +/* V (input) DOUBLE PRECISION array, dimension (LDV,NV). */ +/* If STOREV = 'C', NV = K; if STOREV = 'R', NV = L. */ + +/* LDV (input) INTEGER */ +/* The leading dimension of the array V. */ +/* If STOREV = 'C', LDV >= L; if STOREV = 'R', LDV >= K. */ + +/* T (input) DOUBLE PRECISION array, dimension (LDT,K) */ +/* The triangular K-by-K matrix T in the representation of the */ +/* block reflector. */ + +/* LDT (input) INTEGER */ +/* The leading dimension of the array T. LDT >= K. */ + +/* C (input/output) DOUBLE PRECISION array, dimension (LDC,N) */ +/* On entry, the M-by-N matrix C. */ +/* On exit, C is overwritten by H*C or H'*C or C*H or C*H'. */ + +/* LDC (input) INTEGER */ +/* The leading dimension of the array C. LDC >= max(1,M). */ + +/* WORK (workspace) DOUBLE PRECISION array, dimension (LDWORK,K) */ + +/* LDWORK (input) INTEGER */ +/* The leading dimension of the array WORK. */ +/* If SIDE = 'L', LDWORK >= max(1,N); */ +/* if SIDE = 'R', LDWORK >= max(1,M). */ + +/* Further Details */ +/* =============== */ + +/* Based on contributions by */ +/* A. Petitet, Computer Science Dept., Univ. of Tenn., Knoxville, USA */ + +/* ===================================================================== */ + +/* .. Parameters .. */ +/* .. */ +/* .. Local Scalars .. */ +/* .. */ +/* .. External Functions .. */ +/* .. */ +/* .. External Subroutines .. */ +/* .. */ +/* .. Executable Statements .. */ + +/* Quick return if possible */ + + /* Parameter adjustments */ + v_dim1 = *ldv; + v_offset = 1 + v_dim1; + v -= v_offset; + t_dim1 = *ldt; + t_offset = 1 + t_dim1; + t -= t_offset; + c_dim1 = *ldc; + c_offset = 1 + c_dim1; + c__ -= c_offset; + work_dim1 = *ldwork; + work_offset = 1 + work_dim1; + work -= work_offset; + + /* Function Body */ + if (*m <= 0 || *n <= 0) { + return 0; + } + +/* Check for currently supported options */ + + info = 0; + if (! lsame_(direct, "B")) { + info = -3; + } else if (! lsame_(storev, "R")) { + info = -4; + } + if (info != 0) { + i__1 = -info; + xerbla_("DLARZB", &i__1); + return 0; + } + + if (lsame_(trans, "N")) { + *(unsigned char *)transt = 'T'; + } else { + *(unsigned char *)transt = 'N'; + } + + if (lsame_(side, "L")) { + +/* Form H * C or H' * C */ + +/* W( 1:n, 1:k ) = C( 1:k, 1:n )' */ + + i__1 = *k; + for (j = 1; j <= i__1; ++j) { + dcopy_(n, &c__[j + c_dim1], ldc, &work[j * work_dim1 + 1], &c__1); +/* L10: */ + } + +/* W( 1:n, 1:k ) = W( 1:n, 1:k ) + ... */ +/* C( m-l+1:m, 1:n )' * V( 1:k, 1:l )' */ + + if (*l > 0) { + dgemm_("Transpose", "Transpose", n, k, l, &c_b13, &c__[*m - *l + + 1 + c_dim1], ldc, &v[v_offset], ldv, &c_b13, &work[ + work_offset], ldwork); + } + +/* W( 1:n, 1:k ) = W( 1:n, 1:k ) * T' or W( 1:m, 1:k ) * T */ + + dtrmm_("Right", "Lower", transt, "Non-unit", n, k, &c_b13, &t[ + t_offset], ldt, &work[work_offset], ldwork); + +/* C( 1:k, 1:n ) = C( 1:k, 1:n ) - W( 1:n, 1:k )' */ + + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + i__2 = *k; + for (i__ = 1; i__ <= i__2; ++i__) { + c__[i__ + j * c_dim1] -= work[j + i__ * work_dim1]; +/* L20: */ + } +/* L30: */ + } + +/* C( m-l+1:m, 1:n ) = C( m-l+1:m, 1:n ) - ... */ +/* V( 1:k, 1:l )' * W( 1:n, 1:k )' */ + + if (*l > 0) { + dgemm_("Transpose", "Transpose", l, n, k, &c_b23, &v[v_offset], + ldv, &work[work_offset], ldwork, &c_b13, &c__[*m - *l + 1 + + c_dim1], ldc); + } + + } else if (lsame_(side, "R")) { + +/* Form C * H or C * H' */ + +/* W( 1:m, 1:k ) = C( 1:m, 1:k ) */ + + i__1 = *k; + for (j = 1; j <= i__1; ++j) { + dcopy_(m, &c__[j * c_dim1 + 1], &c__1, &work[j * work_dim1 + 1], & + c__1); +/* L40: */ + } + +/* W( 1:m, 1:k ) = W( 1:m, 1:k ) + ... */ +/* C( 1:m, n-l+1:n ) * V( 1:k, 1:l )' */ + + if (*l > 0) { + dgemm_("No transpose", "Transpose", m, k, l, &c_b13, &c__[(*n - * + l + 1) * c_dim1 + 1], ldc, &v[v_offset], ldv, &c_b13, & + work[work_offset], ldwork); + } + +/* W( 1:m, 1:k ) = W( 1:m, 1:k ) * T or W( 1:m, 1:k ) * T' */ + + dtrmm_("Right", "Lower", trans, "Non-unit", m, k, &c_b13, &t[t_offset] +, ldt, &work[work_offset], ldwork); + +/* C( 1:m, 1:k ) = C( 1:m, 1:k ) - W( 1:m, 1:k ) */ + + i__1 = *k; + for (j = 1; j <= i__1; ++j) { + i__2 = *m; + for (i__ = 1; i__ <= i__2; ++i__) { + c__[i__ + j * c_dim1] -= work[i__ + j * work_dim1]; +/* L50: */ + } +/* L60: */ + } + +/* C( 1:m, n-l+1:n ) = C( 1:m, n-l+1:n ) - ... */ +/* W( 1:m, 1:k ) * V( 1:k, 1:l ) */ + + if (*l > 0) { + dgemm_("No transpose", "No transpose", m, l, k, &c_b23, &work[ + work_offset], ldwork, &v[v_offset], ldv, &c_b13, &c__[(*n + - *l + 1) * c_dim1 + 1], ldc); + } + + } + + return 0; + +/* End of DLARZB */ + +} /* dlarzb_ */ |