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Diffstat (limited to 'ast/erfa/ldsun.c')
| -rw-r--r-- | ast/erfa/ldsun.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/ast/erfa/ldsun.c b/ast/erfa/ldsun.c deleted file mode 100644 index 62ed117..0000000 --- a/ast/erfa/ldsun.c +++ /dev/null @@ -1,115 +0,0 @@ -#include "erfa.h" - -void eraLdsun(double p[3], double e[3], double em, double p1[3]) -/* -** - - - - - - - - - -** e r a L d s u n -** - - - - - - - - - -** -** Deflection of starlight by the Sun. -** -** Given: -** p double[3] direction from observer to star (unit vector) -** e double[3] direction from Sun to observer (unit vector) -** em double distance from Sun to observer (au) -** -** Returned: -** p1 double[3] observer to deflected star (unit vector) -** -** Notes: -** -** 1) The source is presumed to be sufficiently distant that its -** directions seen from the Sun and the observer are essentially -** the same. -** -** 2) The deflection is restrained when the angle between the star and -** the center of the Sun is less than a threshold value, falling to -** zero deflection for zero separation. The chosen threshold value -** is within the solar limb for all solar-system applications, and -** is about 5 arcminutes for the case of a terrestrial observer. -** -** 3) The arguments p and p1 can be the same array. -** -** Called: -** eraLd light deflection by a solar-system body -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** Derived, with permission, from the SOFA library. See notes at end of file. -*/ -{ - double em2, dlim; - - -/* Deflection limiter (smaller for distant observers). */ - em2 = em*em; - if ( em2 < 1.0 ) em2 = 1.0; - dlim = 1e-6 / (em2 > 1.0 ? em2 : 1.0); - -/* Apply the deflection. */ - eraLd(1.0, p, p, e, em, dlim, p1); - -/* Finished. */ - -} -/*---------------------------------------------------------------------- -** -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** All rights reserved. -** -** This library is derived, with permission, from the International -** Astronomical Union's "Standards of Fundamental Astronomy" library, -** available from http://www.iausofa.org. -** -** The ERFA version is intended to retain identical functionality to -** the SOFA library, but made distinct through different function and -** file names, as set out in the SOFA license conditions. The SOFA -** original has a role as a reference standard for the IAU and IERS, -** and consequently redistribution is permitted only in its unaltered -** state. The ERFA version is not subject to this restriction and -** therefore can be included in distributions which do not support the -** concept of "read only" software. -** -** Although the intent is to replicate the SOFA API (other than -** replacement of prefix names) and results (with the exception of -** bugs; any that are discovered will be fixed), SOFA is not -** responsible for any errors found in this version of the library. -** -** If you wish to acknowledge the SOFA heritage, please acknowledge -** that you are using a library derived from SOFA, rather than SOFA -** itself. -** -** -** TERMS AND CONDITIONS -** -** Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions -** are met: -** -** 1 Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** -** 2 Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** -** 3 Neither the name of the Standards Of Fundamental Astronomy Board, -** the International Astronomical Union nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -** POSSIBILITY OF SUCH DAMAGE. -** -*/ |