diff options
Diffstat (limited to 'winsup/mingw/mingwex/gdtoa/arithchk.c')
| -rwxr-xr-x | winsup/mingw/mingwex/gdtoa/arithchk.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/winsup/mingw/mingwex/gdtoa/arithchk.c b/winsup/mingw/mingwex/gdtoa/arithchk.c deleted file mode 100755 index 3211aeda4..000000000 --- a/winsup/mingw/mingwex/gdtoa/arithchk.c +++ /dev/null @@ -1,183 +0,0 @@ -/**************************************************************** -Copyright (C) 1997, 1998 Lucent Technologies -All Rights Reserved - -Permission to use, copy, modify, and distribute this software and -its documentation for any purpose and without fee is hereby -granted, provided that the above copyright notice appear in all -copies and that both that the copyright notice and this -permission notice and warranty disclaimer appear in supporting -documentation, and that the name of Lucent or any of its entities -not be used in advertising or publicity pertaining to -distribution of the software without specific, written prior -permission. - -LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, -INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. -IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY -SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER -IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF -THIS SOFTWARE. -****************************************************************/ - -/* Try to deduce arith.h from arithmetic properties. */ - -#include <stdio.h> - - static int dalign; - typedef struct -Akind { - char *name; - int kind; - } Akind; - - static Akind -IEEE_8087 = { "IEEE_8087", 1 }, -IEEE_MC68k = { "IEEE_MC68k", 2 }, -IBM = { "IBM", 3 }, -VAX = { "VAX", 4 }, -CRAY = { "CRAY", 5}; - - static Akind * -Lcheck() -{ - union { - double d; - long L[2]; - } u; - struct { - double d; - long L; - } x[2]; - - if (sizeof(x) > 2*(sizeof(double) + sizeof(long))) - dalign = 1; - u.L[0] = u.L[1] = 0; - u.d = 1e13; - if (u.L[0] == 1117925532 && u.L[1] == -448790528) - return &IEEE_MC68k; - if (u.L[1] == 1117925532 && u.L[0] == -448790528) - return &IEEE_8087; - if (u.L[0] == -2065213935 && u.L[1] == 10752) - return &VAX; - if (u.L[0] == 1267827943 && u.L[1] == 704643072) - return &IBM; - return 0; - } - - static Akind * -icheck() -{ - union { - double d; - int L[2]; - } u; - struct { - double d; - int L; - } x[2]; - - if (sizeof(x) > 2*(sizeof(double) + sizeof(int))) - dalign = 1; - u.L[0] = u.L[1] = 0; - u.d = 1e13; - if (u.L[0] == 1117925532 && u.L[1] == -448790528) - return &IEEE_MC68k; - if (u.L[1] == 1117925532 && u.L[0] == -448790528) - return &IEEE_8087; - if (u.L[0] == -2065213935 && u.L[1] == 10752) - return &VAX; - if (u.L[0] == 1267827943 && u.L[1] == 704643072) - return &IBM; - return 0; - } - -char *emptyfmt = ""; /* avoid possible warning message with printf("") */ - - static Akind * -ccheck() -{ - union { - double d; - long L; - } u; - long Cray1; - - /* Cray1 = 4617762693716115456 -- without overflow on non-Crays */ - Cray1 = printf(emptyfmt) < 0 ? 0 : 4617762; - if (printf(emptyfmt, Cray1) >= 0) - Cray1 = 1000000*Cray1 + 693716; - if (printf(emptyfmt, Cray1) >= 0) - Cray1 = 1000000*Cray1 + 115456; - u.d = 1e13; - if (u.L == Cray1) - return &CRAY; - return 0; - } - - static int -fzcheck() -{ - double a, b; - int i; - - a = 1.; - b = .1; - for(i = 155;; b *= b, i >>= 1) { - if (i & 1) { - a *= b; - if (i == 1) - break; - } - } - b = a * a; - return b == 0.; - } - - int -main() -{ - Akind *a = 0; - int Ldef = 0; - FILE *f; - -#ifdef WRITE_ARITH_H /* for Symantec's buggy "make" */ - f = fopen("arith.h", "w"); - if (!f) { - printf("Cannot open arith.h\n"); - return 1; - } -#else - f = stdout; -#endif - - if (sizeof(double) == 2*sizeof(long)) - a = Lcheck(); - else if (sizeof(double) == 2*sizeof(int)) { - Ldef = 1; - a = icheck(); - } - else if (sizeof(double) == sizeof(long)) - a = ccheck(); - if (a) { - fprintf(f, "#define %s\n#define Arith_Kind_ASL %d\n", - a->name, a->kind); - if (Ldef) - fprintf(f, "#define Long int\n#define Intcast (int)(long)\n"); - if (dalign) - fprintf(f, "#define Double_Align\n"); - if (sizeof(char*) == 8) - fprintf(f, "#define X64_bit_pointers\n"); -#ifndef NO_LONG_LONG - if (sizeof(long long) < 8) -#endif - fprintf(f, "#define NO_LONG_LONG\n"); - if (a->kind <= 2 && fzcheck()) - fprintf(f, "#define Sudden_Underflow\n"); - return 0; - } - fprintf(f, "/* Unknown arithmetic */\n"); - return 1; - } |