133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
/* fortran/zladiv.f -- translated by f2c (version 20200916).
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You must link the resulting object file with libf2c:
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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http://www.netlib.org/f2c/libf2c.zip
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lmp_f2c.h"
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/* > \brief \b ZLADIV performs complex division in real arithmetic, avoiding unnecessary overflow. */
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/* =========== DOCUMENTATION =========== */
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/* Online html documentation available at */
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/* http://www.netlib.org/lapack/explore-html/ */
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/* > \htmlonly */
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/* > Download ZLADIV + dependencies */
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/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zladiv.
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f"> */
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/* > [TGZ]</a> */
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/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zladiv.
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f"> */
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/* > [ZIP]</a> */
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/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zladiv.
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f"> */
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/* > [TXT]</a> */
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/* > \endhtmlonly */
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/* Definition: */
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/* =========== */
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/* COMPLEX*16 FUNCTION ZLADIV( X, Y ) */
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/* .. Scalar Arguments .. */
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/* COMPLEX*16 X, Y */
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/* .. */
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/* > \par Purpose: */
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/* ============= */
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/* > */
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/* > \verbatim */
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/* > */
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/* > ZLADIV := X / Y, where X and Y are complex. The computation of X / Y */
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/* > will not overflow on an intermediary step unless the results */
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/* > overflows. */
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/* > \endverbatim */
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/* Arguments: */
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/* ========== */
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/* > \param[in] X */
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/* > \verbatim */
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/* > X is COMPLEX*16 */
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/* > \endverbatim */
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/* > */
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/* > \param[in] Y */
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/* > \verbatim */
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/* > Y is COMPLEX*16 */
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/* > The complex scalars X and Y. */
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/* > \endverbatim */
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/* Authors: */
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/* ======== */
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/* > \author Univ. of Tennessee */
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/* > \author Univ. of California Berkeley */
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/* > \author Univ. of Colorado Denver */
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/* > \author NAG Ltd. */
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/* > \ingroup complex16OTHERauxiliary */
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/* ===================================================================== */
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/* Double Complex */ VOID zladiv_(doublecomplex * ret_val, doublecomplex *x,
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doublecomplex *y)
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{
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/* System generated locals */
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doublereal d__1, d__2, d__3, d__4;
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doublecomplex z__1;
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/* Builtin functions */
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double d_imag(doublecomplex *);
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/* Local variables */
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doublereal zi, zr;
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extern /* Subroutine */ int dladiv_(doublereal *, doublereal *,
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doublereal *, doublereal *, doublereal *, doublereal *);
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/* -- LAPACK auxiliary routine -- */
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/* -- LAPACK is a software package provided by Univ. of Tennessee, -- */
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/* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- */
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/* .. Scalar Arguments .. */
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/* .. */
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/* ===================================================================== */
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/* .. Local Scalars .. */
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/* .. */
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/* .. External Subroutines .. */
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/* .. */
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/* .. Intrinsic Functions .. */
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/* .. */
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/* .. Executable Statements .. */
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d__1 = x->r;
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d__2 = d_imag(x);
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d__3 = y->r;
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d__4 = d_imag(y);
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dladiv_(&d__1, &d__2, &d__3, &d__4, &zr, &zi);
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z__1.r = zr, z__1.i = zi;
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ret_val->r = z__1.r, ret_val->i = z__1.i;
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return ;
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/* End of ZLADIV */
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} /* zladiv_ */
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#ifdef __cplusplus
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}
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#endif
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