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Diffstat (limited to 'ast/erfa/pas.c')
| -rw-r--r-- | ast/erfa/pas.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/ast/erfa/pas.c b/ast/erfa/pas.c deleted file mode 100644 index 52b3264..0000000 --- a/ast/erfa/pas.c +++ /dev/null @@ -1,105 +0,0 @@ -#include "erfa.h" - -double eraPas(double al, double ap, double bl, double bp) -/* -** - - - - - - - -** e r a P a s -** - - - - - - - -** -** Position-angle from spherical coordinates. -** -** Given: -** al double longitude of point A (e.g. RA) in radians -** ap double latitude of point A (e.g. Dec) in radians -** bl double longitude of point B -** bp double latitude of point B -** -** Returned (function value): -** double position angle of B with respect to A -** -** Notes: -** -** 1) The result is the bearing (position angle), in radians, of point -** B with respect to point A. It is in the range -pi to +pi. The -** sense is such that if B is a small distance "east" of point A, -** the bearing is approximately +pi/2. -** -** 2) Zero is returned if the two points are coincident. -** -** Copyright (C) 2013-2016, NumFOCUS Foundation. -** Derived, with permission, from the SOFA library. See notes at end of file. -*/ -{ - double dl, x, y, pa; - - - dl = bl - al; - y = sin(dl) * cos(bp); - x = sin(bp) * cos(ap) - cos(bp) * sin(ap) * cos(dl); - pa = ((x != 0.0) || (y != 0.0)) ? atan2(y, x) : 0.0; - - return pa; - -} -/*---------------------------------------------------------------------- -** -** -** 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. -** -*/ |