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Diffstat (limited to 'src/lib/libast/features/limits.c')
| -rw-r--r-- | src/lib/libast/features/limits.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/src/lib/libast/features/limits.c b/src/lib/libast/features/limits.c new file mode 100644 index 0000000..c6e82df --- /dev/null +++ b/src/lib/libast/features/limits.c @@ -0,0 +1,339 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * Glenn Fowler + * AT&T Research + * + * generate limits features + * + * FOPEN_MAX POSIX says ANSI defines it but it's not in ANSI + * + * NOTE: two's complement binary integral representation assumed + */ + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:hide getpagesize getdtablesize +#else +#define getpagesize ______getpagesize +#define getdtablesize ______getdtablesize +#endif + +/* + * we'd like as many symbols as possible defined + * the standards push the vendors the other way + * but don't provide guard that lets everything through + * so each vendor adds their own guard + * many now include something like <standards.h> to + * get it straight in one place -- <sys/types.h> should + * kick that in + */ + +#include "FEATURE/standards" +#include "FEATURE/lib" + +#ifdef __sun +#define _timespec timespec +#endif + +#include <sys/types.h> + +#undef _SGIAPI +#define _SGIAPI 1 + +#if _hdr_limits +#include <limits.h> +#endif + +#undef _SGIAPI +#define _SGIAPI 0 + +#include "FEATURE/lib" +#include "FEATURE/common" + +#if _hdr_unistd +#include <unistd.h> +#endif + +#include "FEATURE/param" + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:nohide getpagesize getdtablesize +#else +#undef getpagesize +#undef getdtablesize +#endif + +int main() +{ + char c; + unsigned char uc; + unsigned short us; + unsigned int ui; + unsigned long ul; + unsigned long val; +#if _typ_uint64_t + uint64_t ull; + uint64_t vll; +#endif + + /* + * <limits.h> with *constant* valued macros + */ + + printf("\n"); +#ifndef CHAR_BIT + uc = 0; + uc = ~uc; + val = 1; + while (uc >>= 1) val++; + printf("#define CHAR_BIT %lu\n", val); +#endif +#ifndef MB_LEN_MAX + val = 1; + printf("#define MB_LEN_MAX %lu\n", val); +#endif + + c = 0; + c = ~c; + uc = 0; + uc = ~uc; + us = 0; + us = ~us; + ui = 0; + ui = ~ui; + ul = 0; + ul = ~ul; +#if _typ_uint64_t + ull = 0; + ull = ~ull; +#endif + +#ifndef UCHAR_MAX + val = uc; + printf("#if defined(__STDC__)\n"); + printf("#define UCHAR_MAX %luU\n", val); + printf("#else\n"); + printf("#define UCHAR_MAX %lu\n", val); + printf("#endif\n"); +#endif + +#ifndef SCHAR_MIN + val = (unsigned char)(uc >> 1) + 1; + printf("#define SCHAR_MIN (-%lu)\n", val); +#endif + +#ifndef SCHAR_MAX + val = (unsigned char)(uc >> 1); + printf("#define SCHAR_MAX %lu\n", val); +#endif + + if (c < 0) + { +#ifndef CHAR_MIN + printf("#define CHAR_MIN SCHAR_MIN\n"); +#endif + +#ifndef CHAR_MAX + printf("#define CHAR_MAX SCHAR_MAX\n"); +#endif + } + else + { +#ifndef CHAR_MIN + printf("#define CHAR_MIN 0\n"); +#endif + +#ifndef CHAR_MAX + printf("#define CHAR_MAX UCHAR_MAX\n"); +#endif + } + +#ifndef USHRT_MAX + val = us; + printf("#if defined(__STDC__)\n"); + printf("#define USHRT_MAX %luU\n", val); + printf("#else\n"); + printf("#define USHRT_MAX %lu\n", val); + printf("#endif\n"); +#endif + +#ifndef SHRT_MIN + val = (unsigned short)(us >> 1) + 1; + printf("#define SHRT_MIN (-%lu)\n", val); +#endif + +#ifndef SHRT_MAX + val = (unsigned short)(us >> 1); + printf("#define SHRT_MAX %lu\n", val); +#endif + + if (ui == us) + { +#ifndef UINT_MAX + printf("#define UINT_MAX USHRT_MAX\n"); +#endif + +#ifndef INT_MIN + printf("#define INT_MIN SHRT_MIN\n"); +#endif + +#ifndef INT_MAX + printf("#define INT_MAX SHRT_MAX\n"); +#endif + } + else + { +#ifndef UINT_MAX + val = ui; + printf("#if defined(__STDC__)\n"); + printf("#define UINT_MAX %luU\n", val); + printf("#else\n"); + printf("#define UINT_MAX %lu\n", val); + printf("#endif\n"); +#endif + +#ifndef INT_MIN + val = (unsigned int)(ui >> 1) + 1; + if (ui == ul) printf("#define INT_MIN (-%lu-1)\n", val - 1); + else printf("#define INT_MIN (-%lu)\n", val); +#endif + +#ifndef INT_MAX + val = (unsigned int)(ui >> 1); + printf("#define INT_MAX %lu\n", val); +#endif + } + + if (ul == ui) + { +#ifndef ULONG_MAX + printf("#define ULONG_MAX UINT_MAX\n"); +#endif + +#ifndef LONG_MIN + printf("#define LONG_MIN INT_MIN\n"); +#endif + +#ifndef LONG_MAX + printf("#define LONG_MAX INT_MAX\n"); +#endif + } + else + { +#ifndef ULONG_MAX + val = ul; + printf("#if defined(__STDC__)\n"); + printf("#define ULONG_MAX %luLU\n", val); + printf("#else\n"); + printf("#define ULONG_MAX %lu\n", val); + printf("#endif\n"); +#endif + +#ifndef LONG_MIN + val = (unsigned long)(ul >> 1) + 1; + printf("#define LONG_MIN (-%luL-1L)\n", val - 1); +#endif + +#ifndef LONG_MAX + val = (unsigned long)(ul >> 1); + printf("#define LONG_MAX %luL\n", val); +#endif + } + +#if _typ_uint64_t && !_ast_intmax_long + if (ull == ul) + { +#ifndef ULLONG_MAX + printf("#define ULLONG_MAX ULONG_MAX\n"); +#endif + +#ifndef LLONG_MIN + printf("#define LLONG_MIN LONG_MIN\n"); +#endif + +#ifndef LLONG_MAX + printf("#define LLONG_MAX LONG_MAX\n"); +#endif + } + else + { +#ifndef ULLONG_MAX + vll = ull; + printf("#ifndef ULLONG_MAX\n"); + printf("#if defined(__STDC__) && _ast_LL\n"); + printf("#define ULLONG_MAX %lluULL\n", vll); + printf("#else\n"); + printf("#define ULLONG_MAX %llu\n", vll); + printf("#endif\n"); + printf("#endif\n"); +#endif + +#ifndef LLONG_MIN + vll = (uint64_t)(ull >> 1) + 1; + printf("#ifndef LLONG_MIN\n"); + printf("#if defined(__STDC__) && _ast_LL\n"); + printf("#define LLONG_MIN (-%lluLL-1LL)\n", vll - 1); + printf("#else\n"); + printf("#define LLONG_MIN (-%llu-1)\n", vll - 1); + printf("#endif\n"); + printf("#endif\n"); +#endif + +#ifndef LLONG_MAX + vll = (uint64_t)(ull >> 1); + printf("#ifndef LLONG_MAX\n"); + printf("#if defined(__STDC__) && _ast_LL\n"); + printf("#define LLONG_MAX %lluLL\n", vll); + printf("#else\n"); + printf("#define LLONG_MAX %llu\n", vll); + printf("#endif\n"); + printf("#endif\n"); +#endif + } +#endif + + printf("\n"); +#ifdef _UWIN + printf("#ifdef _UWIN\n"); + printf("#ifndef DBL_DIG\n"); + printf("#define DBL_DIG 15\n"); + printf("#endif\n"); + printf("#ifndef DBL_MAX\n"); + printf("#define DBL_MAX 1.7976931348623158e+308\n"); + printf("#endif\n"); + printf("#ifndef FLT_DIG\n"); + printf("#define FLT_DIG 6\n"); + printf("#endif\n"); + printf("#ifndef FLT_MAX\n"); + printf("#define FLT_MAX 3.402823466e+38F\n"); + printf("#endif\n"); + printf("#endif\n"); + printf("\n"); +#endif + +#include "conflim.h" + + printf("\n"); + + return 0; +} |