upgrade ast 8.7.1

1 files changed, 125 insertions, 0 deletions

diff --git a/ast/erfa/a2tf.c b/ast/erfa/a2tf.c
new file mode 100644
index 0000000..ac3aa98
--- /dev/null
+++ b/ast/erfa/a2tf.c
@@ -0,0 +1,125 @@
+#include "erfa.h"
+
+void eraA2tf(int ndp, double angle, char *sign, int ihmsf[4])
+/*
+**  - - - - - - - -
+**   e r a A 2 t f
+**  - - - - - - - -
+**
+**  Decompose radians into hours, minutes, seconds, fraction.
+**
+**  Given:
+**     ndp     int     resolution (Note 1)
+**     angle   double  angle in radians
+**
+**  Returned:
+**     sign    char    '+' or '-'
+**     ihmsf   int[4]  hours, minutes, seconds, fraction
+**
+**  Called:
+**     eraD2tf      decompose days to hms
+**
+**  Notes:
+**
+**  1) The argument ndp is interpreted as follows:
+**
+**     ndp         resolution
+**      :      ...0000 00 00
+**     -7         1000 00 00
+**     -6          100 00 00
+**     -5           10 00 00
+**     -4            1 00 00
+**     -3            0 10 00
+**     -2            0 01 00
+**     -1            0 00 10
+**      0            0 00 01
+**      1            0 00 00.1
+**      2            0 00 00.01
+**      3            0 00 00.001
+**      :            0 00 00.000...
+**
+**  2) The largest positive useful value for ndp is determined by the
+**     size of angle, the format of doubles on the target platform, and
+**     the risk of overflowing ihmsf[3].  On a typical platform, for
+**     angle up to 2pi, the available floating-point precision might
+**     correspond to ndp=12.  However, the practical limit is typically
+**     ndp=9, set by the capacity of a 32-bit int, or ndp=4 if int is
+**     only 16 bits.
+**
+**  3) The absolute value of angle may exceed 2pi.  In cases where it
+**     does not, it is up to the caller to test for and handle the
+**     case where angle is very nearly 2pi and rounds up to 24 hours,
+**     by testing for ihmsf[0]=24 and setting ihmsf[0-3] to zero.
+**
+**  Copyright (C) 2013-2016, NumFOCUS Foundation.
+**  Derived, with permission, from the SOFA library.  See notes at end of file.
+*/
+{
+/* Scale then use days to h,m,s function. */
+   eraD2tf(ndp, angle/ERFA_D2PI, sign, ihmsf);
+
+   return;
+
+}
+/*----------------------------------------------------------------------
+**  
+**  
+**  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.
+**  
+*/