Add graph references

2026-06-28 13:49:01 +01:00
parent 0a9807e448
commit a11edf0c53
2578 changed files with 868045 additions and 0 deletions
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+/*  -- translated by f2c (version 20240504).
+   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"
+
+/* > \brief \b DLAPY2 returns sqrt(x2+y2).   
+
+    =========== DOCUMENTATION ===========   
+
+   Online html documentation available at   
+              http://www.netlib.org/lapack/explore-html/   
+
+   > \htmlonly   
+   > Download DLAPY2 + dependencies   
+   > <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlapy2.
+f">   
+   > [TGZ]</a>   
+   > <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlapy2.
+f">   
+   > [ZIP]</a>   
+   > <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlapy2.
+f">   
+   > [TXT]</a>   
+   > \endhtmlonly   
+
+    Definition:   
+    ===========   
+
+         DOUBLE PRECISION FUNCTION DLAPY2( X, Y )   
+
+         DOUBLE PRECISION   X, Y   
+
+
+   > \par Purpose:   
+    =============   
+   >   
+   > \verbatim   
+   >   
+   > DLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary   
+   > overflow.   
+   > \endverbatim   
+
+    Arguments:   
+    ==========   
+
+   > \param[in] X   
+   > \verbatim   
+   >          X is DOUBLE PRECISION   
+   > \endverbatim   
+   >   
+   > \param[in] Y   
+   > \verbatim   
+   >          Y is DOUBLE PRECISION   
+   >          X and Y specify the values x and y.   
+   > \endverbatim   
+
+    Authors:   
+    ========   
+
+   > \author Univ. of Tennessee   
+   > \author Univ. of California Berkeley   
+   > \author Univ. of Colorado Denver   
+   > \author NAG Ltd.   
+
+   > \date September 2012   
+
+   > \ingroup auxOTHERauxiliary   
+
+    ===================================================================== */
+doublereal igraphdlapy2_(doublereal *x, doublereal *y)
+{
+    /* System generated locals */
+    doublereal ret_val, d__1;
+
+    /* Builtin functions */
+    double sqrt(doublereal);
+
+    /* Local variables */
+    doublereal w, z__, xabs, yabs;
+
+
+/*  -- 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   
+
+
+    ===================================================================== */
+
+
+    xabs = abs(*x);
+    yabs = abs(*y);
+    w = max(xabs,yabs);
+    z__ = min(xabs,yabs);
+    if (z__ == 0.) {
+	ret_val = w;
+    } else {
+/* Computing 2nd power */
+	d__1 = z__ / w;
+	ret_val = w * sqrt(d__1 * d__1 + 1.);
+    }
+    return ret_val;
+
+/*     End of DLAPY2 */
+
+} /* igraphdlapy2_ */
+