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/* Check the values of some constants.
Copyright 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The GNU MP Library 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.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "gmp.h"
#ifdef ULONG_MAX
char *ulong_max_def = "defined";
#else
char *ulong_max_def = "not defined";
#endif
#ifdef LONG_MAX
char *long_max_def = "defined";
#else
char *long_max_def = "not defined";
#endif
#ifdef UINT_MAX
char *uint_max_def = "defined";
#else
char *uint_max_def = "not defined";
#endif
#ifdef INT_MAX
char *int_max_def = "defined";
#else
char *int_max_def = "not defined";
#endif
#ifdef USHRT_MAX
char *ushrt_max_def = "defined";
#else
char *ushrt_max_def = "not defined";
#endif
#ifdef SHRT_MAX
char *shrt_max_def = "defined";
#else
char *shrt_max_def = "not defined";
#endif
#include "gmp-impl.h"
#include "longlong.h"
#ifdef _LONG_LONG_LIMB
#define LL(l,ll) ll
#else
#define LL(l,ll) l
#endif
#if __GMP_MP_SIZE_T_INT
#define SS(i,l) i
#else
#define SS(i,l) l
#endif
#define CHECK_LIMB_S(x, xname, y, yname) \
do { \
if ((x) != (y)) \
{ \
printf (LL("%s == %lx, but %s == %lx\n", \
"%s == %llx, but %s == %llx\n"), \
xname, x, yname, y); \
error = 1; \
} \
} while (0)
#define CHECK_INT_S(x, xname, y, yname) \
do { \
if ((x) != (y)) \
{ \
printf ("%s == %d, but %s == %d\n", xname, x, yname, y); \
error = 1; \
} \
} while (0)
#define CHECK_CONDITION_S(x, xname) \
do { \
if (!(x)) \
{ \
printf ("%s is false\n", xname); \
error = 1; \
} \
} while (0)
/* How many bits seem to work in the given type. */
#define CALC_BITS(result, type) \
do { \
type n = 1; \
result = 0; \
while (n != 0) \
{ \
n <<= 1; \
result++; \
} \
} while (0)
#define CHECK_BITS_S(constant, constant_name, type) \
do { \
int calculated; \
CALC_BITS (calculated, type); \
if (calculated != constant) \
{ \
printf ("%s == %d, but calculated %d\n", \
constant_name, constant, calculated); \
error = 1; \
} \
} while (0)
#define CHECK_HIGHBIT_S(value, value_name, type, format) \
do { \
type n = value; \
if (n == 0) \
{ \
printf ("%s == 0\n", value_name); \
error = 1; \
} \
n <<= 1; \
if (n != 0) \
{ \
printf ("%s << 1 = ", value_name); \
printf (format, n); \
printf (" != 0\n"); \
error = 1; \
} \
} while (0)
#define CHECK_MAX_S(max_val, max_name, min_val, min_name, type, format) \
do { \
type maxval = max_val; \
type minval = min_val; \
type n = maxval; \
n++; \
if (n != minval) \
{ \
printf ("%s + 1 = ", max_name); \
printf (format, n); \
printf (" != %s = ", min_name); \
printf (format, minval); \
printf ("\n"); \
error = 1; \
} \
if (maxval <= minval) \
{ \
printf ("%s = ", max_name); \
printf (format, maxval); \
printf (" <= %s = ", min_name); \
printf (format, minval); \
printf ("\n"); \
error = 1; \
} \
} while (0)
#if HAVE_STRINGIZE
#define CHECK_LIMB(x,y) CHECK_LIMB_S (x, #x, y, #y)
#define CHECK_INT(x,y) CHECK_INT_S (x, #x, y, #y)
#define CHECK_CONDITION(x) CHECK_CONDITION_S (x, #x)
#define CHECK_BITS(c,t) CHECK_BITS_S (c, #c, t)
#define CHECK_MAX(m,n,t,f) CHECK_MAX_S (m, #m, n, #n, t, f)
#define CHECK_HIGHBIT(n,t,f) CHECK_HIGHBIT_S (n, #n, t, f)
#else
#define CHECK_LIMB(x,y) CHECK_LIMB_S (x, "x", y, "y")
#define CHECK_INT(x,y) CHECK_INT_S (x, "x", y, "y")
#define CHECK_CONDITION(x) CHECK_CONDITION_S (x, "x")
#define CHECK_BITS(c,t) CHECK_BITS_S (c, "c", t)
#define CHECK_MAX(m,n,t,f) CHECK_MAX_S (m, "m", n, "n", t, f)
#define CHECK_HIGHBIT(n,t,f) CHECK_HIGHBIT_S (n, "n", t, f)
#endif
/* The tests below marked "Bad!" fail on Cray T90 systems, where int, short
and mp_size_t are 48 bits or some such but don't wraparound in a plain
twos complement fashion. In particular,
INT_HIGHBIT << 1 = 0xFFFFC00000000000 != 0
INT_MAX + 1 = 35184372088832 != INT_MIN = -35184372088832
This is a bit bizarre, but doesn't matter because GMP doesn't rely on any
particular overflow behaviour for int or short, only for mp_limb_t. */
int
main (int argc, char *argv[])
{
int error = 0;
CHECK_INT (BYTES_PER_MP_LIMB, sizeof(mp_limb_t));
CHECK_INT (mp_bits_per_limb, BITS_PER_MP_LIMB);
CHECK_INT (__GMP_BITS_PER_MP_LIMB, BITS_PER_MP_LIMB);
CHECK_BITS (BITS_PER_MP_LIMB, mp_limb_t);
CHECK_BITS (BITS_PER_ULONG, unsigned long);
CHECK_HIGHBIT (MP_LIMB_T_HIGHBIT, mp_limb_t, LL("0x%lX","0x%lX"));
CHECK_HIGHBIT (ULONG_HIGHBIT, unsigned long, "0x%lX");
CHECK_HIGHBIT (UINT_HIGHBIT, unsigned int, "0x%X");
CHECK_HIGHBIT (USHRT_HIGHBIT, unsigned short, "0x%hX");
CHECK_HIGHBIT (LONG_HIGHBIT, long, "0x%lX");
#if 0 /* Bad! */
CHECK_HIGHBIT (INT_HIGHBIT, int, "0x%X");
CHECK_HIGHBIT (SHRT_HIGHBIT, short, "0x%hX");
#endif
#if 0 /* Bad! */
CHECK_MAX (LONG_MAX, LONG_MIN, long, "%ld");
CHECK_MAX (INT_MAX, INT_MIN, int, "%d");
CHECK_MAX (SHRT_MAX, SHRT_MIN, short, "%hd");
#endif
CHECK_MAX (ULONG_MAX, 0, unsigned long, "%lu");
CHECK_MAX (UINT_MAX, 0, unsigned int, "%u");
CHECK_MAX (USHRT_MAX, 0, unsigned short, "%hu");
#if 0 /* Bad! */
CHECK_MAX (MP_SIZE_T_MAX, MP_SIZE_T_MIN, mp_size_t, SS("%d","%ld"));
#endif
/* UHWtype should have at least enough bits for half a UWtype */
{
int bits_per_UWtype, bits_per_UHWtype;
CALC_BITS (bits_per_UWtype, UWtype);
CALC_BITS (bits_per_UHWtype, UHWtype);
CHECK_CONDITION (2*bits_per_UHWtype >= bits_per_UWtype);
}
{
mp_limb_t modlimb_inverse_3_calc;
modlimb_invert (modlimb_inverse_3_calc, CNST_LIMB(3));
CHECK_LIMB (MODLIMB_INVERSE_3, modlimb_inverse_3_calc);
}
{
mp_limb_t MODLIMB_INVERSE_3_times_3 = MODLIMB_INVERSE_3 * CNST_LIMB(3);
CHECK_LIMB (MODLIMB_INVERSE_3_times_3, CNST_LIMB(1));
}
#ifdef PP_INVERTED
{
mp_limb_t pp_inverted_calc;
invert_limb (pp_inverted_calc, PP);
CHECK_LIMB (PP_INVERTED, pp_inverted_calc);
}
#endif
if (argc >= 2 || error)
{
int bits;
printf ("\n");
printf ("After gmp.h,\n");
printf (" ULONG_MAX %s\n", ulong_max_def);
printf (" LONG_MAX %s\n", long_max_def);
printf (" UINT_MAX %s\n", uint_max_def);
printf (" INT_MAX %s\n", int_max_def);
printf (" USHRT_MAX %s\n", ushrt_max_def);
printf (" SHRT_MAX %s\n", shrt_max_def);
printf ("\n");
#ifdef _CRAY
printf ("_CRAY is defined, so limits.h is being used\n");
#endif
printf ("ULONG_MAX %lX\n", ULONG_MAX);
printf ("ULONG_HIGHBIT %lX\n", ULONG_HIGHBIT);
printf ("LONG_MAX %lX\n", LONG_MAX);
printf ("LONG_MIN %lX\n", LONG_MIN);
printf ("UINT_MAX %X\n", UINT_MAX);
printf ("UINT_HIGHBIT %X\n", UINT_HIGHBIT);
printf ("INT_MAX %X\n", INT_MAX);
printf ("INT_MIN %X\n", INT_MIN);
printf ("USHRT_MAX %hX\n", USHRT_MAX);
printf ("USHRT_HIGHBIT %hX\n", USHRT_HIGHBIT);
printf ("SHRT_MAX %hX\n", SHRT_MAX);
printf ("SHRT_MIN %hX\n", SHRT_MIN);
printf ("\n");
printf ("Bits\n");
CALC_BITS (bits, long); printf (" long %d\n", bits);
CALC_BITS (bits, int); printf (" int %d\n", bits);
CALC_BITS (bits, short); printf (" short %d\n", bits);
CALC_BITS (bits, unsigned long); printf (" unsigned long %d\n", bits);
CALC_BITS (bits, unsigned int); printf (" unsigned int %d\n", bits);
CALC_BITS (bits, unsigned short); printf (" unsigned short %d\n", bits);
CALC_BITS (bits, mp_size_t); printf (" mp_size_t %d\n", bits);
}
if (error)
abort ();
exit (0);
}
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