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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/dsyr2.c | |
parent | 01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff) | |
download | ydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz |
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/cblas/dsyr2.c')
-rw-r--r-- | contrib/libs/cblas/dsyr2.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/contrib/libs/cblas/dsyr2.c b/contrib/libs/cblas/dsyr2.c new file mode 100644 index 0000000000..d9dca76ff6 --- /dev/null +++ b/contrib/libs/cblas/dsyr2.c @@ -0,0 +1,275 @@ +/* dsyr2.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 dsyr2_(char *uplo, integer *n, doublereal *alpha, + doublereal *x, integer *incx, doublereal *y, integer *incy, + doublereal *a, integer *lda) +{ + /* System generated locals */ + integer a_dim1, a_offset, i__1, i__2; + + /* Local variables */ + integer i__, j, ix, iy, jx, jy, kx, ky, info; + doublereal temp1, temp2; + extern logical lsame_(char *, char *); + extern /* Subroutine */ int xerbla_(char *, integer *); + +/* .. Scalar Arguments .. */ +/* .. */ +/* .. Array Arguments .. */ +/* .. */ + +/* Purpose */ +/* ======= */ + +/* DSYR2 performs the symmetric rank 2 operation */ + +/* A := alpha*x*y' + alpha*y*x' + A, */ + +/* where alpha is a scalar, x and y are n element vectors and A is an n */ +/* by n symmetric matrix. */ + +/* Arguments */ +/* ========== */ + +/* UPLO - CHARACTER*1. */ +/* On entry, UPLO specifies whether the upper or lower */ +/* triangular part of the array A is to be referenced as */ +/* follows: */ + +/* UPLO = 'U' or 'u' Only the upper triangular part of A */ +/* is to be referenced. */ + +/* UPLO = 'L' or 'l' Only the lower triangular part of A */ +/* is to be referenced. */ + +/* Unchanged on exit. */ + +/* N - INTEGER. */ +/* On entry, N specifies the order of the matrix A. */ +/* N must be at least zero. */ +/* Unchanged on exit. */ + +/* ALPHA - DOUBLE PRECISION. */ +/* On entry, ALPHA specifies the scalar alpha. */ +/* Unchanged on exit. */ + +/* X - DOUBLE PRECISION array of dimension at least */ +/* ( 1 + ( n - 1 )*abs( INCX ) ). */ +/* Before entry, the incremented array X must contain the n */ +/* element vector x. */ +/* Unchanged on exit. */ + +/* INCX - INTEGER. */ +/* On entry, INCX specifies the increment for the elements of */ +/* X. INCX must not be zero. */ +/* Unchanged on exit. */ + +/* Y - DOUBLE PRECISION array of dimension at least */ +/* ( 1 + ( n - 1 )*abs( INCY ) ). */ +/* Before entry, the incremented array Y must contain the n */ +/* element vector y. */ +/* Unchanged on exit. */ + +/* INCY - INTEGER. */ +/* On entry, INCY specifies the increment for the elements of */ +/* Y. INCY must not be zero. */ +/* Unchanged on exit. */ + +/* A - DOUBLE PRECISION array of DIMENSION ( LDA, n ). */ +/* Before entry with UPLO = 'U' or 'u', the leading n by n */ +/* upper triangular part of the array A must contain the upper */ +/* triangular part of the symmetric matrix and the strictly */ +/* lower triangular part of A is not referenced. On exit, the */ +/* upper triangular part of the array A is overwritten by the */ +/* upper triangular part of the updated matrix. */ +/* Before entry with UPLO = 'L' or 'l', the leading n by n */ +/* lower triangular part of the array A must contain the lower */ +/* triangular part of the symmetric matrix and the strictly */ +/* upper triangular part of A is not referenced. On exit, the */ +/* lower triangular part of the array A is overwritten by the */ +/* lower triangular part of the updated matrix. */ + +/* LDA - INTEGER. */ +/* On entry, LDA specifies the first dimension of A as declared */ +/* in the calling (sub) program. LDA must be at least */ +/* max( 1, n ). */ +/* 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 .. */ +/* .. */ +/* .. Intrinsic Functions .. */ +/* .. */ + +/* Test the input parameters. */ + + /* Parameter adjustments */ + --x; + --y; + a_dim1 = *lda; + a_offset = 1 + a_dim1; + a -= a_offset; + + /* Function Body */ + info = 0; + if (! lsame_(uplo, "U") && ! lsame_(uplo, "L")) { + info = 1; + } else if (*n < 0) { + info = 2; + } else if (*incx == 0) { + info = 5; + } else if (*incy == 0) { + info = 7; + } else if (*lda < max(1,*n)) { + info = 9; + } + if (info != 0) { + xerbla_("DSYR2 ", &info); + return 0; + } + +/* Quick return if possible. */ + + if (*n == 0 || *alpha == 0.) { + return 0; + } + +/* Set up the start points in X and Y if the increments are not both */ +/* unity. */ + + if (*incx != 1 || *incy != 1) { + if (*incx > 0) { + kx = 1; + } else { + kx = 1 - (*n - 1) * *incx; + } + if (*incy > 0) { + ky = 1; + } else { + ky = 1 - (*n - 1) * *incy; + } + jx = kx; + jy = ky; + } + +/* Start the operations. In this version the elements of A are */ +/* accessed sequentially with one pass through the triangular part */ +/* of A. */ + + if (lsame_(uplo, "U")) { + +/* Form A when A is stored in the upper triangle. */ + + if (*incx == 1 && *incy == 1) { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[j] != 0. || y[j] != 0.) { + temp1 = *alpha * y[j]; + temp2 = *alpha * x[j]; + i__2 = j; + for (i__ = 1; i__ <= i__2; ++i__) { + a[i__ + j * a_dim1] = a[i__ + j * a_dim1] + x[i__] * + temp1 + y[i__] * temp2; +/* L10: */ + } + } +/* L20: */ + } + } else { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[jx] != 0. || y[jy] != 0.) { + temp1 = *alpha * y[jy]; + temp2 = *alpha * x[jx]; + ix = kx; + iy = ky; + i__2 = j; + for (i__ = 1; i__ <= i__2; ++i__) { + a[i__ + j * a_dim1] = a[i__ + j * a_dim1] + x[ix] * + temp1 + y[iy] * temp2; + ix += *incx; + iy += *incy; +/* L30: */ + } + } + jx += *incx; + jy += *incy; +/* L40: */ + } + } + } else { + +/* Form A when A is stored in the lower triangle. */ + + if (*incx == 1 && *incy == 1) { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[j] != 0. || y[j] != 0.) { + temp1 = *alpha * y[j]; + temp2 = *alpha * x[j]; + i__2 = *n; + for (i__ = j; i__ <= i__2; ++i__) { + a[i__ + j * a_dim1] = a[i__ + j * a_dim1] + x[i__] * + temp1 + y[i__] * temp2; +/* L50: */ + } + } +/* L60: */ + } + } else { + i__1 = *n; + for (j = 1; j <= i__1; ++j) { + if (x[jx] != 0. || y[jy] != 0.) { + temp1 = *alpha * y[jy]; + temp2 = *alpha * x[jx]; + ix = jx; + iy = jy; + i__2 = *n; + for (i__ = j; i__ <= i__2; ++i__) { + a[i__ + j * a_dim1] = a[i__ + j * a_dim1] + x[ix] * + temp1 + y[iy] * temp2; + ix += *incx; + iy += *incy; +/* L70: */ + } + } + jx += *incx; + jy += *incy; +/* L80: */ + } + } + } + + return 0; + +/* End of DSYR2 . */ + +} /* dsyr2_ */ |