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author | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
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committer | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
commit | 90d450f74722da7859d6f510a869f6c6908fd12f (patch) | |
tree | 538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/cblas/stpsv.c | |
parent | 01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff) | |
download | ydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz |
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/cblas/stpsv.c')
-rw-r--r-- | contrib/libs/cblas/stpsv.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/contrib/libs/cblas/stpsv.c b/contrib/libs/cblas/stpsv.c new file mode 100644 index 0000000000..f16be31a77 --- /dev/null +++ b/contrib/libs/cblas/stpsv.c @@ -0,0 +1,360 @@ +/* stpsv.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" + +/* Subroutine */ int stpsv_(char *uplo, char *trans, char *diag, integer *n, + real *ap, real *x, integer *incx) +{ + /* System generated locals */ + integer i__1, i__2; + + /* Local variables */ + integer i__, j, k, kk, ix, jx, kx, info; + real temp; + extern logical lsame_(char *, char *); + extern /* Subroutine */ int xerbla_(char *, integer *); + logical nounit; + +/* .. Scalar Arguments .. */ +/* .. */ +/* .. Array Arguments .. */ +/* .. */ + +/* Purpose */ +/* ======= */ + +/* STPSV solves one of the systems of equations */ + +/* A*x = b, or A'*x = b, */ + +/* where b and x are n element vectors and A is an n by n unit, or */ +/* non-unit, upper or lower triangular matrix, supplied in packed form. */ + +/* No test for singularity or near-singularity is included in this */ +/* routine. Such tests must be performed before calling this routine. */ + +/* Arguments */ +/* ========== */ + +/* UPLO - CHARACTER*1. */ +/* On entry, UPLO specifies whether the matrix is an upper or */ +/* lower triangular matrix as follows: */ + +/* UPLO = 'U' or 'u' A is an upper triangular matrix. */ + +/* UPLO = 'L' or 'l' A is a lower triangular matrix. */ + +/* Unchanged on exit. */ + +/* TRANS - CHARACTER*1. */ +/* On entry, TRANS specifies the equations to be solved as */ +/* follows: */ + +/* TRANS = 'N' or 'n' A*x = b. */ + +/* TRANS = 'T' or 't' A'*x = b. */ + +/* TRANS = 'C' or 'c' A'*x = b. */ + +/* Unchanged on exit. */ + +/* DIAG - CHARACTER*1. */ +/* On entry, DIAG specifies whether or not A is unit */ +/* triangular as follows: */ + +/* DIAG = 'U' or 'u' A is assumed to be unit triangular. */ + +/* DIAG = 'N' or 'n' A is not assumed to be unit */ +/* triangular. */ + +/* Unchanged on exit. */ + +/* N - INTEGER. */ +/* On entry, N specifies the order of the matrix A. */ +/* N must be at least zero. */ +/* Unchanged on exit. */ + +/* AP - REAL array of DIMENSION at least */ +/* ( ( n*( n + 1 ) )/2 ). */ +/* Before entry with UPLO = 'U' or 'u', the array AP must */ +/* contain the upper triangular matrix packed sequentially, */ +/* column by column, so that AP( 1 ) contains a( 1, 1 ), */ +/* AP( 2 ) and AP( 3 ) contain a( 1, 2 ) and a( 2, 2 ) */ +/* respectively, and so on. */ +/* Before entry with UPLO = 'L' or 'l', the array AP must */ +/* contain the lower triangular matrix packed sequentially, */ +/* column by column, so that AP( 1 ) contains a( 1, 1 ), */ +/* AP( 2 ) and AP( 3 ) contain a( 2, 1 ) and a( 3, 1 ) */ +/* respectively, and so on. */ +/* Note that when DIAG = 'U' or 'u', the diagonal elements of */ +/* A are not referenced, but are assumed to be unity. */ +/* Unchanged on exit. */ + +/* X - REAL array of dimension at least */ +/* ( 1 + ( n - 1 )*abs( INCX ) ). */ +/* Before entry, the incremented array X must contain the n */ +/* element right-hand side vector b. On exit, X is overwritten */ +/* with the solution vector x. */ + +/* INCX - INTEGER. */ +/* On entry, INCX specifies the increment for the elements of */ +/* X. INCX must not be zero. */ +/* Unchanged on exit. */ + + +/* Level 2 Blas routine. */ + +/* -- Written on 22-October-1986. */ +/* Jack Dongarra, Argonne National Lab. */ +/* Jeremy Du Croz, Nag Central Office. */ +/* Sven Hammarling, Nag Central Office. */ +/* Richard Hanson, Sandia National Labs. */ + + +/* .. Parameters .. */ +/* .. */ +/* .. Local Scalars .. */ +/* .. */ +/* .. External Functions .. */ +/* .. */ +/* .. External Subroutines .. */ +/* .. */ + +/* Test the input parameters. */ + + /* Parameter adjustments */ + --x; + --ap; + + /* Function Body */ + info = 0; + if (! lsame_(uplo, "U") && ! lsame_(uplo, "L")) { + info = 1; + } else if (! lsame_(trans, "N") && ! lsame_(trans, + "T") && ! lsame_(trans, "C")) { + info = 2; + } else if (! lsame_(diag, "U") && ! lsame_(diag, + "N")) { + info = 3; + } else if (*n < 0) { + info = 4; + } else if (*incx == 0) { + info = 7; + } + if (info != 0) { + xerbla_("STPSV ", &info); + return 0; + } + +/* Quick return if possible. */ + + if (*n == 0) { + return 0; + } + + nounit = lsame_(diag, "N"); + +/* Set up the start point in X if the increment is not unity. This */ +/* will be ( N - 1 )*INCX too small for descending loops. */ + + if (*incx <= 0) { + kx = 1 - (*n - 1) * *incx; + } else if (*incx != 1) { + kx = 1; + } + +/* Start the operations. In this version the elements of AP are */ +/* accessed sequentially with one pass through AP. */ + + if (lsame_(trans, "N")) { + +/* Form x := inv( A )*x. */ + + if (lsame_(uplo, "U")) { + kk = *n * (*n + 1) / 2; + if (*incx == 1) { + for (j = *n; j >= 1; --j) { + if (x[j] != 0.f) { + if (nounit) { + x[j] /= ap[kk]; + } + temp = x[j]; + k = kk - 1; + for (i__ = j - 1; i__ >= 1; --i__) { + x[i__] -= temp * ap[k]; + --k; +/* L10: */ + } + } + kk -= j; +/* L20: */ + } + } else { + jx = kx + (*n - 1) * *incx; + for (j = *n; j >= 1; --j) { + if (x[jx] != 0.f) { + if (nounit) { + x[jx] /= ap[kk]; + } + temp = x[jx]; + ix = jx; + i__1 = kk - j + 1; + for (k = kk - 1; k >= i__1; --k) { + ix -= *incx; + x[ix] -= temp * ap[k]; +/* L30: */ + } + } + jx -= *incx; + kk -= j; +/* L40: */ + } + } + } else { + kk = 1; + if (*incx == 1) { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[j] != 0.f) { + if (nounit) { + x[j] /= ap[kk]; + } + temp = x[j]; + k = kk + 1; + i__2 = *n; + for (i__ = j + 1; i__ <= i__2; ++i__) { + x[i__] -= temp * ap[k]; + ++k; +/* L50: */ + } + } + kk += *n - j + 1; +/* L60: */ + } + } else { + jx = kx; + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[jx] != 0.f) { + if (nounit) { + x[jx] /= ap[kk]; + } + temp = x[jx]; + ix = jx; + i__2 = kk + *n - j; + for (k = kk + 1; k <= i__2; ++k) { + ix += *incx; + x[ix] -= temp * ap[k]; +/* L70: */ + } + } + jx += *incx; + kk += *n - j + 1; +/* L80: */ + } + } + } + } else { + +/* Form x := inv( A' )*x. */ + + if (lsame_(uplo, "U")) { + kk = 1; + if (*incx == 1) { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + temp = x[j]; + k = kk; + i__2 = j - 1; + for (i__ = 1; i__ <= i__2; ++i__) { + temp -= ap[k] * x[i__]; + ++k; +/* L90: */ + } + if (nounit) { + temp /= ap[kk + j - 1]; + } + x[j] = temp; + kk += j; +/* L100: */ + } + } else { + jx = kx; + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + temp = x[jx]; + ix = kx; + i__2 = kk + j - 2; + for (k = kk; k <= i__2; ++k) { + temp -= ap[k] * x[ix]; + ix += *incx; +/* L110: */ + } + if (nounit) { + temp /= ap[kk + j - 1]; + } + x[jx] = temp; + jx += *incx; + kk += j; +/* L120: */ + } + } + } else { + kk = *n * (*n + 1) / 2; + if (*incx == 1) { + for (j = *n; j >= 1; --j) { + temp = x[j]; + k = kk; + i__1 = j + 1; + for (i__ = *n; i__ >= i__1; --i__) { + temp -= ap[k] * x[i__]; + --k; +/* L130: */ + } + if (nounit) { + temp /= ap[kk - *n + j]; + } + x[j] = temp; + kk -= *n - j + 1; +/* L140: */ + } + } else { + kx += (*n - 1) * *incx; + jx = kx; + for (j = *n; j >= 1; --j) { + temp = x[jx]; + ix = kx; + i__1 = kk - (*n - (j + 1)); + for (k = kk; k >= i__1; --k) { + temp -= ap[k] * x[ix]; + ix -= *incx; +/* L150: */ + } + if (nounit) { + temp /= ap[kk - *n + j]; + } + x[jx] = temp; + jx -= *incx; + kk -= *n - j + 1; +/* L160: */ + } + } + } + } + + return 0; + +/* End of STPSV . */ + +} /* stpsv_ */ |