diff options
| author | shmel1k <[email protected]> | 2022-09-02 12:44:59 +0300 | 
|---|---|---|
| committer | shmel1k <[email protected]> | 2022-09-02 12:44:59 +0300 | 
| commit | 90d450f74722da7859d6f510a869f6c6908fd12f (patch) | |
| tree | 538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/clapack/slauu2.c | |
| parent | 01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff) | |
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/slauu2.c')
| -rw-r--r-- | contrib/libs/clapack/slauu2.c | 180 | 
1 files changed, 180 insertions, 0 deletions
diff --git a/contrib/libs/clapack/slauu2.c b/contrib/libs/clapack/slauu2.c new file mode 100644 index 00000000000..ad80d23e9cb --- /dev/null +++ b/contrib/libs/clapack/slauu2.c @@ -0,0 +1,180 @@ +/* slauu2.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_b7 = 1.f; +static integer c__1 = 1; + +/* Subroutine */ int slauu2_(char *uplo, integer *n, real *a, integer *lda,  +	integer *info) +{ +    /* System generated locals */ +    integer a_dim1, a_offset, i__1, i__2, i__3; + +    /* Local variables */ +    integer i__; +    real aii; +    extern doublereal sdot_(integer *, real *, integer *, real *, integer *); +    extern logical lsame_(char *, char *); +    extern /* Subroutine */ int sscal_(integer *, real *, real *, integer *),  +	    sgemv_(char *, integer *, integer *, real *, real *, integer *,  +	    real *, integer *, real *, real *, integer *); +    logical upper; +    extern /* Subroutine */ int xerbla_(char *, integer *); + + +/*  -- LAPACK auxiliary routine (version 3.2) -- */ +/*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */ +/*     November 2006 */ + +/*     .. Scalar Arguments .. */ +/*     .. */ +/*     .. Array Arguments .. */ +/*     .. */ + +/*  Purpose */ +/*  ======= */ + +/*  SLAUU2 computes the product U * U' or L' * L, where the triangular */ +/*  factor U or L is stored in the upper or lower triangular part of */ +/*  the array A. */ + +/*  If UPLO = 'U' or 'u' then the upper triangle of the result is stored, */ +/*  overwriting the factor U in A. */ +/*  If UPLO = 'L' or 'l' then the lower triangle of the result is stored, */ +/*  overwriting the factor L in A. */ + +/*  This is the unblocked form of the algorithm, calling Level 2 BLAS. */ + +/*  Arguments */ +/*  ========= */ + +/*  UPLO    (input) CHARACTER*1 */ +/*          Specifies whether the triangular factor stored in the array A */ +/*          is upper or lower triangular: */ +/*          = 'U':  Upper triangular */ +/*          = 'L':  Lower triangular */ + +/*  N       (input) INTEGER */ +/*          The order of the triangular factor U or L.  N >= 0. */ + +/*  A       (input/output) REAL array, dimension (LDA,N) */ +/*          On entry, the triangular factor U or L. */ +/*          On exit, if UPLO = 'U', the upper triangle of A is */ +/*          overwritten with the upper triangle of the product U * U'; */ +/*          if UPLO = 'L', the lower triangle of A is overwritten with */ +/*          the lower triangle of the product L' * L. */ + +/*  LDA     (input) INTEGER */ +/*          The leading dimension of the array A.  LDA >= max(1,N). */ + +/*  INFO    (output) INTEGER */ +/*          = 0: successful exit */ +/*          < 0: if INFO = -k, the k-th argument had an illegal value */ + +/*  ===================================================================== */ + +/*     .. Parameters .. */ +/*     .. */ +/*     .. 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; + +    /* Function Body */ +    *info = 0; +    upper = lsame_(uplo, "U"); +    if (! upper && ! lsame_(uplo, "L")) { +	*info = -1; +    } else if (*n < 0) { +	*info = -2; +    } else if (*lda < max(1,*n)) { +	*info = -4; +    } +    if (*info != 0) { +	i__1 = -(*info); +	xerbla_("SLAUU2", &i__1); +	return 0; +    } + +/*     Quick return if possible */ + +    if (*n == 0) { +	return 0; +    } + +    if (upper) { + +/*        Compute the product U * U'. */ + +	i__1 = *n; +	for (i__ = 1; i__ <= i__1; ++i__) { +	    aii = a[i__ + i__ * a_dim1]; +	    if (i__ < *n) { +		i__2 = *n - i__ + 1; +		a[i__ + i__ * a_dim1] = sdot_(&i__2, &a[i__ + i__ * a_dim1],  +			lda, &a[i__ + i__ * a_dim1], lda); +		i__2 = i__ - 1; +		i__3 = *n - i__; +		sgemv_("No transpose", &i__2, &i__3, &c_b7, &a[(i__ + 1) *  +			a_dim1 + 1], lda, &a[i__ + (i__ + 1) * a_dim1], lda, & +			aii, &a[i__ * a_dim1 + 1], &c__1); +	    } else { +		sscal_(&i__, &aii, &a[i__ * a_dim1 + 1], &c__1); +	    } +/* L10: */ +	} + +    } else { + +/*        Compute the product L' * L. */ + +	i__1 = *n; +	for (i__ = 1; i__ <= i__1; ++i__) { +	    aii = a[i__ + i__ * a_dim1]; +	    if (i__ < *n) { +		i__2 = *n - i__ + 1; +		a[i__ + i__ * a_dim1] = sdot_(&i__2, &a[i__ + i__ * a_dim1], & +			c__1, &a[i__ + i__ * a_dim1], &c__1); +		i__2 = *n - i__; +		i__3 = i__ - 1; +		sgemv_("Transpose", &i__2, &i__3, &c_b7, &a[i__ + 1 + a_dim1],  +			 lda, &a[i__ + 1 + i__ * a_dim1], &c__1, &aii, &a[i__  +			+ a_dim1], lda); +	    } else { +		sscal_(&i__, &aii, &a[i__ + a_dim1], lda); +	    } +/* L20: */ +	} +    } + +    return 0; + +/*     End of SLAUU2 */ + +} /* slauu2_ */  | 
