--- /dev/null
+/* Test mpz_cmp and mpz_cmpabs.
+
+Copyright 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 3 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. If not, see http://www.gnu.org/licenses/. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+/* Nothing sophisticated here, just exercise some combinations of sizes and
+ signs. */
+
+
+void
+check_one (mpz_ptr x, mpz_ptr y, int want_cmp, int want_cmpabs)
+{
+ int got;
+
+ got = mpz_cmp (x, y);
+ if (( got < 0) != (want_cmp < 0)
+ || (got == 0) != (want_cmp == 0)
+ || (got > 0) != (want_cmp > 0))
+ {
+ printf ("mpz_cmp got %d want %d\n", got, want_cmp);
+ mpz_trace ("x", x);
+ mpz_trace ("y", y);
+ abort ();
+ }
+
+ got = mpz_cmpabs (x, y);
+ if (( got < 0) != (want_cmpabs < 0)
+ || (got == 0) != (want_cmpabs == 0)
+ || (got > 0) != (want_cmpabs > 0))
+ {
+ printf ("mpz_cmpabs got %d want %d\n", got, want_cmpabs);
+ mpz_trace ("x", x);
+ mpz_trace ("y", y);
+ abort ();
+ }
+}
+
+
+void
+check_all (mpz_ptr x, mpz_ptr y, int want_cmp, int want_cmpabs)
+{
+ check_one (x, y, want_cmp, want_cmpabs);
+ check_one (y, x, -want_cmp, -want_cmpabs);
+
+ mpz_neg (x, x);
+ mpz_neg (y, y);
+ want_cmp = -want_cmp;
+
+ check_one (x, y, want_cmp, want_cmpabs);
+ check_one (y, x, -want_cmp, -want_cmpabs);
+}
+
+
+#define SET1(z,size, n) \
+ SIZ(z) = size; PTR(z)[0] = n
+
+#define SET2(z,size, n1,n0) \
+ SIZ(z) = size; PTR(z)[1] = n1; PTR(z)[0] = n0
+
+#define SET4(z,size, n3,n2,n1,n0) \
+ SIZ(z) = size; PTR(z)[3] = n3; PTR(z)[2] = n2; PTR(z)[1] = n1; PTR(z)[0] = n0
+
+void
+check_various (void)
+{
+ mpz_t x, y;
+
+ mpz_init (x);
+ mpz_init (y);
+
+ mpz_realloc (x, (mp_size_t) 20);
+ mpz_realloc (y, (mp_size_t) 20);
+
+ /* 0 cmp 0, junk in low limbs */
+ SET1 (x,0, 123);
+ SET1 (y,0, 456);
+ check_all (x, y, 0, 0);
+
+
+ /* 123 cmp 0 */
+ SET1 (x,1, 123);
+ SET1 (y,0, 456);
+ check_all (x, y, 1, 1);
+
+ /* 123:456 cmp 0 */
+ SET2 (x,2, 456,123);
+ SET1 (y,0, 9999);
+ check_all (x, y, 1, 1);
+
+
+ /* 123 cmp 123 */
+ SET1(x,1, 123);
+ SET1(y,1, 123);
+ check_all (x, y, 0, 0);
+
+ /* -123 cmp 123 */
+ SET1(x,-1, 123);
+ SET1(y,1, 123);
+ check_all (x, y, -1, 0);
+
+
+ /* 123 cmp 456 */
+ SET1(x,1, 123);
+ SET1(y,1, 456);
+ check_all (x, y, -1, -1);
+
+ /* -123 cmp 456 */
+ SET1(x,-1, 123);
+ SET1(y,1, 456);
+ check_all (x, y, -1, -1);
+
+ /* 123 cmp -456 */
+ SET1(x,1, 123);
+ SET1(y,-1, 456);
+ check_all (x, y, 1, -1);
+
+
+ /* 1:0 cmp 1:0 */
+ SET2 (x,2, 1,0);
+ SET2 (y,2, 1,0);
+ check_all (x, y, 0, 0);
+
+ /* -1:0 cmp 1:0 */
+ SET2 (x,-2, 1,0);
+ SET2 (y,2, 1,0);
+ check_all (x, y, -1, 0);
+
+
+ /* 2:0 cmp 1:0 */
+ SET2 (x,2, 2,0);
+ SET2 (y,2, 1,0);
+ check_all (x, y, 1, 1);
+
+
+ /* 4:3:2:1 cmp 2:1 */
+ SET4 (x,4, 4,3,2,1);
+ SET2 (y,2, 2,1);
+ check_all (x, y, 1, 1);
+
+ /* -4:3:2:1 cmp 2:1 */
+ SET4 (x,-4, 4,3,2,1);
+ SET2 (y,2, 2,1);
+ check_all (x, y, -1, 1);
+
+
+ mpz_clear (x);
+ mpz_clear (y);
+}
+
+
+int
+main (void)
+{
+ tests_start ();
+ mp_trace_base = -16;
+
+ check_various ();
+
+ tests_end ();
+ exit (0);
+}
projects / msp430-gcc.git / blobdiff