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/* ../netlib/clacrm.f -- translated by f2c (version 20100827). 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 "FLA_f2c.h" /* Table of constant values */
static real c_b6 = 1.f;
static real c_b7 = 0.f;
/* > \brief \b CLACRM multiplies a complex matrix by a square real matrix. */
/* =========== DOCUMENTATION =========== */
/* Online html documentation available at */
/* http://www.netlib.org/lapack/explore-html/ */
/* > \htmlonly */
/* > Download CLACRM + dependencies */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/clacrm. f"> */
/* > [TGZ]</a> */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/clacrm. f"> */
/* > [ZIP]</a> */
/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/clacrm. f"> */
/* > [TXT]</a> */
/* > \endhtmlonly */
/* Definition: */
/* =========== */
/* SUBROUTINE CLACRM( M, N, A, LDA, B, LDB, C, LDC, RWORK ) */
/* .. Scalar Arguments .. */
/* INTEGER LDA, LDB, LDC, M, N */
/* .. */
/* .. Array Arguments .. */
/* REAL B( LDB, * ), RWORK( * ) */
/* COMPLEX A( LDA, * ), C( LDC, * ) */
/* .. */
/* > \par Purpose: */
/* ============= */
/* > */
/* > \verbatim */
/* > */
/* > CLACRM performs a very simple matrix-matrix multiplication: */
/* > C := A * B, */
/* > where A is M by N and complex;
B is N by N and real;
*/
/* > C is M by N and complex. */
/* > \endverbatim */
/* Arguments: */
/* ========== */
/* > \param[in] M */
/* > \verbatim */
/* > M is INTEGER */
/* > The number of rows of the matrix A and of the matrix C. */
/* > M >= 0. */
/* > \endverbatim */
/* > */
/* > \param[in] N */
/* > \verbatim */
/* > N is INTEGER */
/* > The number of columns and rows of the matrix B and */
/* > the number of columns of the matrix C. */
/* > N >= 0. */
/* > \endverbatim */
/* > */
/* > \param[in] A */
/* > \verbatim */
/* > A is COMPLEX array, dimension (LDA, N) */
/* > A contains the M by N matrix A. */
/* > \endverbatim */
/* > */
/* > \param[in] LDA */
/* > \verbatim */
/* > LDA is INTEGER */
/* > The leading dimension of the array A. LDA >=max(1,M). */
/* > \endverbatim */
/* > */
/* > \param[in] B */
/* > \verbatim */
/* > B is REAL array, dimension (LDB, N) */
/* > B contains the N by N matrix B. */
/* > \endverbatim */
/* > */
/* > \param[in] LDB */
/* > \verbatim */
/* > LDB is INTEGER */
/* > The leading dimension of the array B. LDB >=max(1,N). */
/* > \endverbatim */
/* > */
/* > \param[in] C */
/* > \verbatim */
/* > C is COMPLEX array, dimension (LDC, N) */
/* > C contains the M by N matrix C. */
/* > \endverbatim */
/* > */
/* > \param[in] LDC */
/* > \verbatim */
/* > LDC is INTEGER */
/* > The leading dimension of the array C. LDC >=max(1,N). */
/* > \endverbatim */
/* > */
/* > \param[out] RWORK */
/* > \verbatim */
/* > RWORK is REAL array, dimension (2*M*N) */
/* > \endverbatim */
/* Authors: */
/* ======== */
/* > \author Univ. of Tennessee */
/* > \author Univ. of California Berkeley */
/* > \author Univ. of Colorado Denver */
/* > \author NAG Ltd. */
/* > \date September 2012 */
/* > \ingroup complexOTHERauxiliary */
/* ===================================================================== */
/* Subroutine */
int clacrm_(integer *m, integer *n, complex *a, integer *lda, real *b, integer *ldb, complex *c__, integer *ldc, real *rwork)
{
/* System generated locals */
integer b_dim1, b_offset, a_dim1, a_offset, c_dim1, c_offset, i__1, i__2, i__3, i__4, i__5;
real r__1;
complex q__1;
/* Builtin functions */
double r_imag(complex *);
/* Local variables */
integer i__, j, l;
extern /* Subroutine */
int sgemm_(char *, char *, integer *, integer *, integer *, real *, real *, integer *, real *, integer *, real *, real *, integer *);
/* -- LAPACK auxiliary routine (version 3.4.2) -- */
/* -- LAPACK is a software package provided by Univ. of Tennessee, -- */
/* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- */
/* September 2012 */
/* .. Scalar Arguments .. */
/* .. */
/* .. Array Arguments .. */
/* .. */
/* ===================================================================== */
/* .. Parameters .. */
/* .. */
/* .. Local Scalars .. */
/* .. */
/* .. Intrinsic Functions .. */
/* .. */
/* .. External Subroutines .. */
/* .. */
/* .. Executable Statements .. */
/* Quick return if possible. */
/* Parameter adjustments */
a_dim1 = *lda;
a_offset = 1 + a_dim1;
a -= a_offset;
b_dim1 = *ldb;
b_offset = 1 + b_dim1;
b -= b_offset;
c_dim1 = *ldc;
c_offset = 1 + c_dim1;
c__ -= c_offset;
--rwork;
/* Function Body */
if (*m == 0 || *n == 0)
{
return 0;
}
i__1 = *n;
for (j = 1;
j <= i__1;
++j)
{
i__2 = *m;
for (i__ = 1;
i__ <= i__2;
++i__)
{
i__3 = i__ + j * a_dim1;
rwork[(j - 1) * *m + i__] = a[i__3].r;
/* L10: */
}
/* L20: */
}
l = *m * *n + 1;
sgemm_("N", "N", m, n, n, &c_b6, &rwork[1], m, &b[b_offset], ldb, &c_b7, & rwork[l], m);
i__1 = *n;
for (j = 1;
j <= i__1;
++j)
{
i__2 = *m;
for (i__ = 1;
i__ <= i__2;
++i__)
{
i__3 = i__ + j * c_dim1;
i__4 = l + (j - 1) * *m + i__ - 1;
c__[i__3].r = rwork[i__4];
c__[i__3].i = 0.f; // , expr subst
/* L30: */
}
/* L40: */
}
i__1 = *n;
for (j = 1;
j <= i__1;
++j)
{
i__2 = *m;
for (i__ = 1;
i__ <= i__2;
++i__)
{
rwork[(j - 1) * *m + i__] = r_imag(&a[i__ + j * a_dim1]);
/* L50: */
}
/* L60: */
}
sgemm_("N", "N", m, n, n, &c_b6, &rwork[1], m, &b[b_offset], ldb, &c_b7, & rwork[l], m);
i__1 = *n;
for (j = 1;
j <= i__1;
++j)
{
i__2 = *m;
for (i__ = 1;
i__ <= i__2;
++i__)
{
i__3 = i__ + j * c_dim1;
i__4 = i__ + j * c_dim1;
r__1 = c__[i__4].r;
i__5 = l + (j - 1) * *m + i__ - 1;
q__1.r = r__1;
q__1.i = rwork[i__5]; // , expr subst
c__[i__3].r = q__1.r;
c__[i__3].i = q__1.i; // , expr subst
/* L70: */
}
/* L80: */
}
return 0;
/* End of CLACRM */
}
/* clacrm_ */
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