mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
68c2edf610
These changes are per calc version 2.12.7.3:
Requiring calc shell scripts to use -s -f at the end of the
initial #! line.
Fixed /tmp/mersenne example in calc(1) man page.
Added make variable ${ARCH_CFLAGS}. The ${ARCH_CFLAGS} is
added after ${CCMISC} and before ${EXTRA_CFLAGS} when building
the ${CFLAGS} for compiling C code. are ${CC} when compiling
C files. The default value is:
ARCH_CFLAGS= -march=native
which directs C compiler to compile for the native machine.
To disable use of '-march=native', set ARCH_CFLAGS to the empty
string as in:
make all ARCH_CFLAGS=
To make calc RPMs more portable, they are compiled with an
empty ARCH_CFLAGS.
These changes are per calc version 2.12.7.4:
Fixed issues relating to compiling on macOS. Fixed issues
where <unistd.h> is needed.
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
|
|
* have_offscl - determine if we have a scalar off_t element
|
|
*
|
|
* Copyright (C) 1999,2021 Landon Curt Noll
|
|
*
|
|
* Calc is open software; you can redistribute it and/or modify it under
|
|
* the terms of the version 2.1 of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* Calc is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
|
* Public License for more details.
|
|
*
|
|
* A copy of version 2.1 of the GNU Lesser General Public License is
|
|
* distributed with calc under the filename COPYING-LGPL. You should have
|
|
* received a copy with calc; if not, write to Free Software Foundation, Inc.
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* Under source code control: 1996/07/13 12:57:22
|
|
* File existed as early as: 1996
|
|
*
|
|
* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
|
|
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
|
|
*/
|
|
|
|
/*
|
|
* usage:
|
|
* have_offscl
|
|
*
|
|
* On some systems, off_t is a scalar value on which one can perform
|
|
* arithmetic operations, assignments and comparisons. On some systems
|
|
* off_t is some sort of union or struct which must be converted into
|
|
* a ZVALUE in order to perform arithmetic operations, assignments and
|
|
* comparisons.
|
|
*
|
|
*
|
|
* This prog outputs several defines:
|
|
*
|
|
* HAVE_OFF_T_SCALAR
|
|
* defined ==> ok to perform arithmetic ops, = and comparisons
|
|
* undefined ==> convert to ZVALUE first
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include "have_unistd.h"
|
|
#if defined(HAVE_UNISTD_H)
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
#if !defined(OFF_T_NON_SCALAR)
|
|
off_t value; /* an off_t to perform arithmatic on */
|
|
off_t value2; /* an off_t to perform arithmatic on */
|
|
|
|
/*
|
|
* do some math opts on an off_t
|
|
*/
|
|
value = (off_t)getpid();
|
|
value2 = (off_t)-1;
|
|
if (value > (off_t)1) {
|
|
--value;
|
|
}
|
|
#if !defined(_WIN32)
|
|
if (value <= (off_t)getppid()) {
|
|
--value;
|
|
}
|
|
#endif
|
|
if (value == value2) {
|
|
value += value2;
|
|
}
|
|
value <<= 1;
|
|
if (!value) {
|
|
printf("/* something for the off_t to do */\n");
|
|
}
|
|
|
|
/*
|
|
* report off_t as a scalar
|
|
*/
|
|
printf("#undef HAVE_OFF_T_SCALAR\n");
|
|
printf("#define HAVE_OFF_T_SCALAR /* off_t is a simple value */\n");
|
|
#else
|
|
printf("#undef HAVE_OFF_T_SCALAR /* off_t is not a simple value */\n");
|
|
#endif
|
|
/* exit(0); */
|
|
return 0;
|
|
}
|