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340c1990ce
Restored use of the #define FPOS_POS_LEN symbol. This refers to the length of the __pos element (if the __pos element exists), the fpos_t type (if that type exists). Changed SWAP_HALF_IN_FILEPOS(dest, src) mato to use FILEPOS_LEN Little Endian when FILEPOS is a simple scalar type (i.e., HAVE_FILEPOS_SCALAR is defined). Changed #define HAVE_FPOS to HAVE_FGETSETPOS. Corrected comment in have_fpos_pos.h. The HAVE_FPOS_POS symbol was NOT related to fgetpos & fsetpos but rather if we we have an __pos element in FILEPOS. Changed #define HAVE_NO_FPOS to HAVE_NO_FGETSETPOS. Improved comments in have_fpos_pos.h to show why and how HAVE_FPOS_POS, FPOS_POS_BITS, and FPOS_POS_LEN were defined or undefed. Changed showfiles builtin to print sizes cast to (long int) with the "%ld" printf format to avoid implementations that do not support the "%lld" printf format specifier.
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* have_fpos - Determine if have fgetpos and fsetpos functions
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*
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* Copyright (C) 1999,2021 Landon Curt Noll
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Under source code control: 1994/11/05 03:19:52
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* File existed as early as: 1994
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*
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* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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/*
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* If the symbol HAVE_NO_FGETSETPOS is defined, we will output nothing.
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* If we are able to compile this program, then we must have the
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* fgetpos and fsetpos functions and we will output the
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* appropriate have_fpos.h file body.
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*/
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#include <stdio.h>
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#include "banned.h" /* include after system header <> includes */
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int
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main(void)
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{
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#if !defined(HAVE_NO_FGETSETPOS)
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fpos_t pos; /* file position */
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/* get the current position */
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(void) fgetpos(stdin, &pos);
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/* set the current position */
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(void) fsetpos(stdin, &pos);
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/* print a have_fpos.h body that says we have the functions */
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printf("#undef HAVE_FGETSETPOS\n");
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printf("#define HAVE_FGETSETPOS 1 /* yes */\n\n");
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printf("typedef fpos_t FILEPOS;\n");
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#endif
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/* exit(0); */
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return 0;
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}
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