Abdelrahman Said
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/* -- translated by f2c (version 20240504).
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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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#include "f2c.h"
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/* > \brief \b DLAISNAN tests input for NaN by comparing two arguments for inequality.
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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 DLAISNAN + dependencies
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> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlaisna
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n.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/dlaisna
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n.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/dlaisna
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n.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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LOGICAL FUNCTION DLAISNAN( DIN1, DIN2 )
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DOUBLE PRECISION DIN1, DIN2
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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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> This routine is not for general use. It exists solely to avoid
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> over-optimization in DISNAN.
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>
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> DLAISNAN checks for NaNs by comparing its two arguments for
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> inequality. NaN is the only floating-point value where NaN != NaN
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> returns .TRUE. To check for NaNs, pass the same variable as both
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> arguments.
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>
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> A compiler must assume that the two arguments are
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> not the same variable, and the test will not be optimized away.
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> Interprocedural or whole-program optimization may delete this
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> test. The ISNAN functions will be replaced by the correct
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> Fortran 03 intrinsic once the intrinsic is widely available.
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> \endverbatim
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Arguments:
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==========
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> \param[in] DIN1
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> \verbatim
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> DIN1 is DOUBLE PRECISION
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> \endverbatim
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>
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> \param[in] DIN2
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> \verbatim
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> DIN2 is DOUBLE PRECISION
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> Two numbers to compare for inequality.
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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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> \date September 2012
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> \ingroup auxOTHERauxiliary
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===================================================================== */
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logical igraphdlaisnan_(doublereal *din1, doublereal *din2)
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{
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/* System generated locals */
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logical ret_val;
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/* -- LAPACK auxiliary routine (version 3.4.2) --
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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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September 2012
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===================================================================== */
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ret_val = *din1 != *din2;
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return ret_val;
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} /* igraphdlaisnan_ */
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