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Дата изменения: Sat Dec 17 06:08:42 2005 Дата индексирования: Sun Apr 10 23:59:12 2016 Кодировка: Поисковые слова: http lib.mexmat.ru books 17577 |
Read the double precision data bounded by two addresses within a DAF. Deprecated: This routine has been superseded by dafgda_c and dafgsr_c. This routine is supported for purposes of backward compatibility only.
DAF
FILES
Variable I/O Description -------- --- -------------------------------------------------- handle I Handle of a DAF. begin, end I Initial, final address within file. data O Data contained between begin and end.
handle is the handle of a DAF. begin, end are the initial and final addresses of a contiguous set of double precision numbers within a DAF. Presumably, these make up all or part of a particular array. Note that CSPICE DAF addresses begin at 1 as in the FORTRAN version of the SPICE Toolkit.
data are the double precision data contained between the specified addresses within the specified file.
None.
The principal reason that DAFs are so easy to use is that the data in each DAF are considered to be one long contiguous set of double precision numbers. You can grab data from anywhere within a DAF without knowing (or caring) about the physical records in which they are stored. This routine has been made obsolete by the routines dafgda_c and dafgsr_c. This routine is supported for reasons of backward compatibility only. New software development should utilize dafgda_c or dafgsr_c.
The following code fragment illustrates the use of dafrda_c to read data from an imaginary array. The array begins with a directory containing 11 epochs. Each pair of epochs bounds an interval, and each interval is covered by a set of eight osculating elements. #include "SpiceUsr.h" . . . dafus_c ( sum, nd, ni, dc, ic ); begin = ic[4]; end = ic[5]; dafrda_c ( handle, begin, begin+10, epochs ); for ( i = 0; i < 10; i++ ) { if ( ( et > epochs[i] ) && ( et < epochs[i+1] ) ) { offset = ic[4] + 11 + (i - 1) * 8; dafrda_c ( handle, offset+1, offset+8, elements ); return; } }
1) This routine is deprecated. See the routines dafgda_c and dafgsr_c.
1) If `begin' is zero or negative, the error SPICE(DAFNEGADDR) is signaled. 2) If the begin > end, the error SPICE(DAFBEGGTEND) is signaled. 3) If the file associated with `handle' is not of the native binary file format this routine signals the error SPICE(UNSUPPORTEDBFF). 4) If `handle' is invalid, routines in the call tree of dafrda_c signal an appropriate error.
None.
N.J. Bachman (JPL) W.L. Taber (JPL) F.S. Turner (JPL) R.E. Thurman (JPL) I.M. Underwood (JPL)
None.
-CSPICE Version 1.0.1, 27-OCT-2003 (NJB) (FST) The header now states that this routine is deprecated. The Exceptions header section has been extended. Minor additional header updates were made. -CSPICE Version 1.0.0, 14-DEC-1999 (NJB) (RET) (IMU) (WLT)
read data from daf address