diff options
author | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:36:36 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:42:26 +0200 |
commit | a89a14ef5da44684a16b204e7a70460cc8c4922a (patch) | |
tree | b23b4c6b155977909ef508fdae2f48d33d802813 /vendor/gmp-6.3.0/tests/mpz/t-cmp.c | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/tests/mpz/t-cmp.c')
-rw-r--r-- | vendor/gmp-6.3.0/tests/mpz/t-cmp.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/tests/mpz/t-cmp.c b/vendor/gmp-6.3.0/tests/mpz/t-cmp.c new file mode 100644 index 0000000..1ae2517 --- /dev/null +++ b/vendor/gmp-6.3.0/tests/mpz/t-cmp.c @@ -0,0 +1,181 @@ +/* Test mpz_cmp and mpz_cmpabs. + +Copyright 2001 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" + + +/* 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); +} |