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/* Check the values of some constants.
Copyright 2000-2003, 2014 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
The GNU MP Library test suite 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 General
Public License for more details.
You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include <stdio.h>
#include <stdlib.h>
#include "gmp-impl.h"
#include "tests.h"
#ifdef ULONG_MAX
const char *ulong_max_def = "defined";
#else
const char *ulong_max_def = "not defined";
#endif
#ifdef LONG_MAX
const char *long_max_def = "defined";
#else
const char *long_max_def = "not defined";
#endif
#ifdef UINT_MAX
const char *uint_max_def = "defined";
#else
const char *uint_max_def = "not defined";
#endif
#ifdef INT_MAX
const char *int_max_def = "defined";
#else
const char *int_max_def = "not defined";
#endif
#ifdef USHRT_MAX
const char *ushrt_max_def = "defined";
#else
const char *ushrt_max_def = "not defined";
#endif
#ifdef SHRT_MAX
const char *shrt_max_def = "defined";
#else
const 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)
#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)
/* 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 (GMP_LIMB_BYTES, (int) sizeof(mp_limb_t));
CHECK_INT (mp_bits_per_limb, GMP_LIMB_BITS);
CHECK_BITS (GMP_LIMB_BITS, mp_limb_t);
CHECK_BITS (BITS_PER_ULONG, unsigned long);
CHECK_HIGHBIT (GMP_LIMB_HIGHBIT, mp_limb_t, LL("0x%lX","0x%llX"));
CHECK_HIGHBIT (ULONG_HIGHBIT, unsigned long, "0x%lX");
CHECK_HIGHBIT (UINT_HIGHBIT, unsigned int, "0x%X");
CHECK_HIGHBIT (USHRT_HIGHBIT, unsigned short, "0x%hX");
#if 0 /* Bad! */
CHECK_HIGHBIT (LONG_HIGHBIT, long, "0x%lX");
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);
}
ASSERT_ALWAYS_LIMB (MODLIMB_INVERSE_3);
{
mp_limb_t modlimb_inverse_3_calc;
binvert_limb (modlimb_inverse_3_calc, CNST_LIMB(3));
ASSERT_ALWAYS_LIMB (modlimb_inverse_3_calc);
CHECK_LIMB (MODLIMB_INVERSE_3, modlimb_inverse_3_calc);
}
{
mp_limb_t MODLIMB_INVERSE_3_times_3
= (MODLIMB_INVERSE_3 * CNST_LIMB(3)) & GMP_NUMB_MASK;
CHECK_LIMB (MODLIMB_INVERSE_3_times_3, CNST_LIMB(1));
}
{
mp_limb_t hi, lo;
hi = refmpn_umul_ppmm (&lo, GMP_NUMB_CEIL_MAX_DIV3-1,
CNST_LIMB(3) << GMP_NAIL_BITS);
if (! (hi < 1))
{
printf ("GMP_NUMB_CEIL_MAX_DIV3 too big\n");
error = 1;
}
hi = refmpn_umul_ppmm (&lo, GMP_NUMB_CEIL_MAX_DIV3,
CNST_LIMB(3) << GMP_NAIL_BITS);
if (! (hi >= 1))
{
printf ("GMP_NUMB_CEIL_MAX_DIV3 too small\n");
error = 1;
}
}
{
mp_limb_t hi, lo;
hi = refmpn_umul_ppmm (&lo, GMP_NUMB_CEIL_2MAX_DIV3-1,
CNST_LIMB(3) << GMP_NAIL_BITS);
if (! (hi < 2))
{
printf ("GMP_NUMB_CEIL_2MAX_DIV3 too big\n");
error = 1;
}
hi = refmpn_umul_ppmm (&lo, GMP_NUMB_CEIL_2MAX_DIV3,
CNST_LIMB(3) << GMP_NAIL_BITS);
if (! (hi >= 2))
{
printf ("GMP_NUMB_CEIL_2MAX_DIV3 too small\n");
error = 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 %X\n", USHRT_MAX);
printf ("USHRT_HIGHBIT %X\n", USHRT_HIGHBIT);
printf ("SHRT_MAX %X\n", SHRT_MAX);
printf ("SHRT_MIN %X\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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