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/*
* Copyright 2015 INRIA Paris-Rocquencourt
*
* Use of this software is governed by the MIT license
*
* Written by Michael Kruse, INRIA Paris-Rocquencourt,
* Domaine de Voluceau, Rocquenqourt, B.P. 105,
* 78153 Le Chesnay Cedex France
*/
#include <limits.h>
#include <assert.h>
#include <isl_imath.h>
/* This constant is not defined in limits.h, but IMath uses it */
#define ULONG_MIN 0ul
/* Test the IMath internals assumed by the imath implementation of isl_int.
*
* In particular, we test the ranges of IMath-defined types.
*
* Also, isl uses the existence and function of imath's struct
* fields. The digits are stored with less significant digits at lower array
* indices. Where they are stored (on the heap or in the field 'single') does
* not matter.
*/
int test_imath_internals()
{
mpz_t val;
mp_result retval;
assert(sizeof(mp_small) == sizeof(long));
assert(MP_SMALL_MIN == LONG_MIN);
assert(MP_SMALL_MAX == LONG_MAX);
assert(sizeof(mp_usmall) == sizeof(unsigned long));
assert(MP_USMALL_MAX == ULONG_MAX);
retval = mp_int_init_value(&val, 0);
assert(retval == MP_OK);
assert(val.alloc >= val.used);
assert(val.used == 1);
assert(val.sign == MP_ZPOS);
assert(val.digits[0] == 0);
retval = mp_int_set_value(&val, -1);
assert(retval == MP_OK);
assert(val.alloc >= val.used);
assert(val.used == 1);
assert(val.sign == MP_NEG);
assert(val.digits[0] == 1);
retval = mp_int_set_value(&val, 1);
assert(retval == MP_OK);
assert(val.alloc >= val.used);
assert(val.used == 1);
assert(val.sign == MP_ZPOS);
assert(val.digits[0] == 1);
retval = mp_int_mul_pow2(&val, sizeof(mp_digit) * CHAR_BIT, &val);
assert(retval == MP_OK);
assert(val.alloc >= val.used);
assert(val.used == 2);
assert(val.sign == MP_ZPOS);
assert(val.digits[0] == 0);
assert(val.digits[1] == 1);
mp_int_clear(&val);
return 0;
}
int main()
{
if (test_imath_internals() < 0)
return -1;
return 0;
}
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