convert linalg library from Fortran to C++

2022-12-28 13:18:38 -05:00
parent 7cceabe5bd
commit c5a87f75d6
410 changed files with 80736 additions and 30 deletions
--- a/lib/linalg/zladiv.cpp
+++ b/lib/linalg/zladiv.cpp
@ -0,0 +1,132 @@
+/* fortran/zladiv.f -- translated by f2c (version 20200916).
+   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
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include "lmp_f2c.h"
+
+/* > \brief \b ZLADIV performs complex division in real arithmetic, avoiding unnecessary overflow. */
+
+/*  =========== DOCUMENTATION =========== */
+
+/* Online html documentation available at */
+/*            http://www.netlib.org/lapack/explore-html/ */
+
+/* > \htmlonly */
+/* > Download ZLADIV + dependencies */
+/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zladiv.
+f"> */
+/* > [TGZ]</a> */
+/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zladiv.
+f"> */
+/* > [ZIP]</a> */
+/* > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zladiv.
+f"> */
+/* > [TXT]</a> */
+/* > \endhtmlonly */
+
+/*  Definition: */
+/*  =========== */
+
+/*       COMPLEX*16     FUNCTION ZLADIV( X, Y ) */
+
+/*       .. Scalar Arguments .. */
+/*       COMPLEX*16         X, Y */
+/*       .. */
+
+
+/* > \par Purpose: */
+/*  ============= */
+/* > */
+/* > \verbatim */
+/* > */
+/* > ZLADIV := X / Y, where X and Y are complex.  The computation of X / Y */
+/* > will not overflow on an intermediary step unless the results */
+/* > overflows. */
+/* > \endverbatim */
+
+/*  Arguments: */
+/*  ========== */
+
+/* > \param[in] X */
+/* > \verbatim */
+/* >          X is COMPLEX*16 */
+/* > \endverbatim */
+/* > */
+/* > \param[in] Y */
+/* > \verbatim */
+/* >          Y is COMPLEX*16 */
+/* >          The complex scalars X and Y. */
+/* > \endverbatim */
+
+/*  Authors: */
+/*  ======== */
+
+/* > \author Univ. of Tennessee */
+/* > \author Univ. of California Berkeley */
+/* > \author Univ. of Colorado Denver */
+/* > \author NAG Ltd. */
+
+/* > \ingroup complex16OTHERauxiliary */
+
+/*  ===================================================================== */
+/* Double Complex */ VOID zladiv_(doublecomplex * ret_val, doublecomplex *x, 
+	doublecomplex *y)
+{
+    /* System generated locals */
+    doublereal d__1, d__2, d__3, d__4;
+    doublecomplex z__1;
+
+    /* Builtin functions */
+    double d_imag(doublecomplex *);
+
+    /* Local variables */
+    doublereal zi, zr;
+    extern /* Subroutine */ int dladiv_(doublereal *, doublereal *, 
+	    doublereal *, doublereal *, doublereal *, doublereal *);
+
+
+/*  -- LAPACK auxiliary routine -- */
+/*  -- LAPACK is a software package provided by Univ. of Tennessee,    -- */
+/*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- */
+
+/*     .. Scalar Arguments .. */
+/*     .. */
+
+/*  ===================================================================== */
+
+/*     .. Local Scalars .. */
+/*     .. */
+/*     .. External Subroutines .. */
+/*     .. */
+/*     .. Intrinsic Functions .. */
+/*     .. */
+/*     .. Executable Statements .. */
+
+    d__1 = x->r;
+    d__2 = d_imag(x);
+    d__3 = y->r;
+    d__4 = d_imag(y);
+    dladiv_(&d__1, &d__2, &d__3, &d__4, &zr, &zi);
+    z__1.r = zr, z__1.i = zi;
+     ret_val->r = z__1.r,  ret_val->i = z__1.i;
+
+    return ;
+
+/*     End of ZLADIV */
+
+} /* zladiv_ */
+
+#ifdef __cplusplus
+	}
+#endif