mirror of
git://git.code.sf.net/p/cdesktopenv/code
synced 2025-03-09 15:50:02 +00:00
2027648f1a
I'd forgotten to check for uses of the __STDC__ macro. This is defined on all C compilers that support C89/C90 or later standards. So we can remove all fallback code disabled by that macro.
323 lines
6.9 KiB
C
323 lines
6.9 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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/*
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* Glenn Fowler
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* AT&T Research
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*
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* generate limits features
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*
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* FOPEN_MAX POSIX says ANSI defines it but it's not in ANSI
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*
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* NOTE: two's complement binary integral representation assumed
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*/
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#if defined(__STDPP__directive) && defined(__STDPP__hide)
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__STDPP__directive pragma pp:hide getpagesize getdtablesize
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#else
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#define getpagesize ______getpagesize
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#define getdtablesize ______getdtablesize
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#endif
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/*
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* we'd like as many symbols as possible defined
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* the standards push the vendors the other way
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* but don't provide guard that lets everything through
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* so each vendor adds their own guard
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* many now include something like <standards.h> to
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* get it straight in one place -- <sys/types.h> should
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* kick that in
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*/
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#include "FEATURE/standards"
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#include "FEATURE/lib"
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#ifdef __sun
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#define _timespec timespec
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#endif
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#include <sys/types.h>
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#undef _SGIAPI
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#define _SGIAPI 1
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#if _hdr_limits
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#include <limits.h>
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#endif
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#undef _SGIAPI
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#define _SGIAPI 0
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#include "FEATURE/lib"
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#include "FEATURE/common"
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#if _hdr_unistd
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#include <unistd.h>
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#endif
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#include "FEATURE/param"
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#if defined(__STDPP__directive) && defined(__STDPP__hide)
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__STDPP__directive pragma pp:nohide getpagesize getdtablesize
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#else
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#undef getpagesize
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#undef getdtablesize
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#endif
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int main()
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{
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char c;
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unsigned char uc;
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unsigned short us;
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unsigned int ui;
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unsigned long ul;
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unsigned long val;
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#if _typ_uint64_t
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uint64_t ull;
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uint64_t vll;
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#endif
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/*
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* <limits.h> with *constant* valued macros
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*/
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printf("\n");
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#ifndef CHAR_BIT
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uc = 0;
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uc = ~uc;
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val = 1;
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while (uc >>= 1) val++;
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printf("#define CHAR_BIT %lu\n", val);
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#endif
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#ifndef MB_LEN_MAX
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val = 1;
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printf("#define MB_LEN_MAX %lu\n", val);
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#endif
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c = 0;
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c = ~c;
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uc = 0;
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uc = ~uc;
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us = 0;
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us = ~us;
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ui = 0;
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ui = ~ui;
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ul = 0;
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ul = ~ul;
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#if _typ_uint64_t
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ull = 0;
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ull = ~ull;
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#endif
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#ifndef UCHAR_MAX
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val = uc;
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printf("#define UCHAR_MAX %luU\n", val);
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#endif
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#ifndef SCHAR_MIN
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val = (unsigned char)(uc >> 1) + 1;
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printf("#define SCHAR_MIN (-%lu)\n", val);
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#endif
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#ifndef SCHAR_MAX
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val = (unsigned char)(uc >> 1);
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printf("#define SCHAR_MAX %lu\n", val);
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#endif
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if (c < 0)
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{
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#ifndef CHAR_MIN
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printf("#define CHAR_MIN SCHAR_MIN\n");
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#endif
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#ifndef CHAR_MAX
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printf("#define CHAR_MAX SCHAR_MAX\n");
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#endif
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}
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else
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{
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#ifndef CHAR_MIN
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printf("#define CHAR_MIN 0\n");
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#endif
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#ifndef CHAR_MAX
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printf("#define CHAR_MAX UCHAR_MAX\n");
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#endif
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}
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#ifndef USHRT_MAX
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val = us;
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printf("#define USHRT_MAX %luU\n", val);
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#endif
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#ifndef SHRT_MIN
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val = (unsigned short)(us >> 1) + 1;
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printf("#define SHRT_MIN (-%lu)\n", val);
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#endif
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#ifndef SHRT_MAX
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val = (unsigned short)(us >> 1);
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printf("#define SHRT_MAX %lu\n", val);
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#endif
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if (ui == us)
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{
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#ifndef UINT_MAX
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printf("#define UINT_MAX USHRT_MAX\n");
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#endif
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#ifndef INT_MIN
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printf("#define INT_MIN SHRT_MIN\n");
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#endif
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#ifndef INT_MAX
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printf("#define INT_MAX SHRT_MAX\n");
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#endif
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}
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else
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{
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#ifndef UINT_MAX
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val = ui;
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printf("#define UINT_MAX %luU\n", val);
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#endif
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#ifndef INT_MIN
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val = (unsigned int)(ui >> 1) + 1;
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if (ui == ul) printf("#define INT_MIN (-%lu-1)\n", val - 1);
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else printf("#define INT_MIN (-%lu)\n", val);
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#endif
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#ifndef INT_MAX
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val = (unsigned int)(ui >> 1);
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printf("#define INT_MAX %lu\n", val);
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#endif
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}
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if (ul == ui)
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{
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#ifndef ULONG_MAX
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printf("#define ULONG_MAX UINT_MAX\n");
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#endif
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#ifndef LONG_MIN
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printf("#define LONG_MIN INT_MIN\n");
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#endif
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#ifndef LONG_MAX
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printf("#define LONG_MAX INT_MAX\n");
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#endif
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}
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else
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{
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#ifndef ULONG_MAX
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val = ul;
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printf("#define ULONG_MAX %luLU\n", val);
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#endif
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#ifndef LONG_MIN
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val = (unsigned long)(ul >> 1) + 1;
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printf("#define LONG_MIN (-%luL-1L)\n", val - 1);
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#endif
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#ifndef LONG_MAX
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val = (unsigned long)(ul >> 1);
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printf("#define LONG_MAX %luL\n", val);
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#endif
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}
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#if _typ_uint64_t && !_ast_intmax_long
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if (ull == ul)
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{
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#ifndef ULLONG_MAX
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printf("#define ULLONG_MAX ULONG_MAX\n");
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#endif
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#ifndef LLONG_MIN
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printf("#define LLONG_MIN LONG_MIN\n");
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#endif
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#ifndef LLONG_MAX
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printf("#define LLONG_MAX LONG_MAX\n");
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#endif
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}
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else
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{
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#ifndef ULLONG_MAX
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vll = ull;
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printf("#ifndef ULLONG_MAX\n");
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printf("#if _ast_LL\n");
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printf("#define ULLONG_MAX %lluULL\n", vll);
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printf("#else\n");
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printf("#define ULLONG_MAX %llu\n", vll);
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printf("#endif\n");
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printf("#endif\n");
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#endif
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#ifndef LLONG_MIN
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vll = (uint64_t)(ull >> 1) + 1;
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printf("#ifndef LLONG_MIN\n");
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printf("#if _ast_LL\n");
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printf("#define LLONG_MIN (-%lluLL-1LL)\n", vll - 1);
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printf("#else\n");
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printf("#define LLONG_MIN (-%llu-1)\n", vll - 1);
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printf("#endif\n");
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printf("#endif\n");
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#endif
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#ifndef LLONG_MAX
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vll = (uint64_t)(ull >> 1);
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printf("#ifndef LLONG_MAX\n");
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printf("#if _ast_LL\n");
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printf("#define LLONG_MAX %lluLL\n", vll);
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printf("#else\n");
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printf("#define LLONG_MAX %llu\n", vll);
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printf("#endif\n");
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printf("#endif\n");
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#endif
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}
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#endif
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printf("\n");
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#ifdef _UWIN
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printf("#ifdef _UWIN\n");
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printf("#ifndef DBL_DIG\n");
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printf("#define DBL_DIG 15\n");
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printf("#endif\n");
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printf("#ifndef DBL_MAX\n");
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printf("#define DBL_MAX 1.7976931348623158e+308\n");
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printf("#endif\n");
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printf("#ifndef FLT_DIG\n");
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printf("#define FLT_DIG 6\n");
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printf("#endif\n");
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printf("#ifndef FLT_MAX\n");
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printf("#define FLT_MAX 3.402823466e+38F\n");
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printf("#endif\n");
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printf("#endif\n");
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printf("\n");
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#endif
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#include "conflim.h"
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printf("\n");
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return 0;
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}
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