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* Macros used by the PAL library
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* A collection of useful macros provided and used by the PAL library
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* TIMJ: Tim Jenness (JAC, Hawaii)
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* {enter_new_authors_here}
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* {enter_further_changes_here}
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* Copyright (C) 2012 Science and Technology Facilities Council.
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* All Rights Reserved.
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* {note_any_bugs_here}
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static const double PAL__DPI = 3.1415926535897932384626433832795028841971693993751;
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static const double PAL__D2PI = 6.2831853071795864769252867665590057683943387987502;
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/* pi/180: degrees to radians */
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static const double PAL__DD2R = 0.017453292519943295769236907684886127134428718885417;
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/* Radians to arcseconds */
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static const double PAL__DR2AS = 2.0626480624709635515647335733077861319665970087963e5;
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/* Arcseconds to radians */
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static const double PAL__DAS2R = 4.8481368110953599358991410235794797595635330237270e-6;
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/* Start of SLA modified Julian date epoch */
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static const double PAL__MJD0 = 2400000.5;
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/* Light time for 1 AU (sec) */
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static const double PAL__CR = 499.004782;
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static const double PAL__SPD = 86400.0;
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/* Km per sec to AU per tropical century
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= 86400 * 36524.2198782 / 149597870 */
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static const double PAL__VF = 21.095;
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/* Radians per year to arcsec per century. This needs to be a macro since it
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is an expression including other constants. */
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#define PAL__PMF (100.0*60.0*60.0*360.0/PAL__D2PI);
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/* Mean sidereal rate - the rotational angular velocity of Earth
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in radians/sec from IERS Conventions (2003). */
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static const double PAL__SR = 7.2921150e-5;
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/* Gaussian gravitational constant (exact) */
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static const double PAL__GCON = 0.01720209895;
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/* DNINT(A) - round to nearest whole number (double) */
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#define DNINT(A) ((A)<0.0?ceil((A)-0.5):floor((A)+0.5))
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/* DMAX(A,B) - return maximum value - evaluates arguments multiple times */
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#define DMAX(A,B) (A > B ? A : B )
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palmac.h
