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