--- /dev/null
+/* Exercise mpz_get_si.
+
+Copyright 2000, 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"
+
+
+void
+check_data (void)
+{
+ static const struct {
+ int base;
+ const char *f;
+ long want;
+ } data[] = {
+ { 10, "0", 0L },
+ { 10, "1", 1L },
+ { 10, "-1", -1L },
+ { 10, "2", 2L },
+ { 10, "-2", -2L },
+ { 10, "12345", 12345L },
+ { 10, "-12345", -12345L },
+
+ /* fraction bits ignored */
+ { 10, "0.5", 0L },
+ { 10, "-0.5", 0L },
+ { 10, "1.1", 1L },
+ { 10, "-1.1", -1L },
+ { 10, "1.9", 1L },
+ { 10, "-1.9", -1L },
+ { 16, "1.000000000000000000000000000000000000000000000000001", 1L },
+ { 16, "-1.000000000000000000000000000000000000000000000000001", -1L },
+
+ /* low bits extracted (this is undocumented) */
+ { 16, "1000000000000000000000000000000000000000000000000001", 1L },
+ { 16, "-1000000000000000000000000000000000000000000000000001", -1L },
+ };
+
+ int i;
+ mpf_t f;
+ long got;
+
+ mpf_init2 (f, 2000L);
+ for (i = 0; i < numberof (data); i++)
+ {
+ mpf_set_str_or_abort (f, data[i].f, data[i].base);
+
+ got = mpf_get_si (f);
+ if (got != data[i].want)
+ {
+ printf ("mpf_get_si wrong at data[%d]\n", i);
+ printf (" f \"%s\"\n", data[i].f);
+ printf (" dec "); mpf_out_str (stdout, 10, 0, f); printf ("\n");
+ printf (" hex "); mpf_out_str (stdout, 16, 0, f); printf ("\n");
+ printf (" size %ld\n", (long) SIZ(f));
+ printf (" exp %ld\n", (long) EXP(f));
+ printf (" got %ld (0x%lX)\n", got, got);
+ printf (" want %ld (0x%lX)\n", data[i].want, data[i].want);
+ abort();
+ }
+ }
+ mpf_clear (f);
+}
+
+
+void
+check_max (void)
+{
+ mpf_t f;
+ long want;
+ long got;
+
+ mpf_init2 (f, 200L);
+
+#define CHECK_MAX(name) \
+ if (got != want) \
+ { \
+ printf ("mpf_get_si wrong on %s\n", name); \
+ printf (" f "); \
+ mpf_out_str (stdout, 10, 0, f); printf (", hex "); \
+ mpf_out_str (stdout, 16, 0, f); printf ("\n"); \
+ printf (" got %ld, hex %lX\n", got, got); \
+ printf (" want %ld, hex %lX\n", want, want); \
+ abort(); \
+ }
+
+ want = LONG_MAX;
+ mpf_set_si (f, want);
+ got = mpf_get_si (f);
+ CHECK_MAX ("LONG_MAX");
+
+ want = LONG_MIN;
+ mpf_set_si (f, want);
+ got = mpf_get_si (f);
+ CHECK_MAX ("LONG_MIN");
+
+ mpf_clear (f);
+}
+
+
+void
+check_limbdata (void)
+{
+#define M GMP_NUMB_MAX
+
+ static const struct {
+ mp_exp_t exp;
+ mp_size_t size;
+ mp_limb_t d[10];
+ unsigned long want;
+
+ } data[] = {
+
+ /* in the comments here, a "_" indicates a digit (ie. limb) position not
+ included in the d data, and therefore zero */
+
+ { 0, 0, { 0 }, 0L }, /* 0 */
+
+ { 1, 1, { 1 }, 1L }, /* 1 */
+ { 1, -1, { 1 }, -1L }, /* -1 */
+
+ { 0, 1, { 1 }, 0L }, /* .1 */
+ { 0, -1, { 1 }, 0L }, /* -.1 */
+
+ { -1, 1, { 1 }, 0L }, /* ._1 */
+ { -1, -1, { 1 }, 0L }, /* -._1 */
+
+ { -999, 1, { 1 }, 0L }, /* .___1 small */
+ { MP_EXP_T_MIN, 1, { 1 }, 0L }, /* .____1 very small */
+
+ { 999, 1, { 1 }, 0L }, /* 1____. big */
+ { MP_EXP_T_MAX, 1, { 1 }, 0L }, /* 1_____. very big */
+
+ { 1, 2, { 999, 2 }, 2L }, /* 2.9 */
+ { 5, 8, { 7, 8, 9, 3, 0, 0, 0, 1 }, 3L }, /* 10003.987 */
+
+ { 2, 2, { M, M }, LONG_MAX }, /* FF. */
+ { 2, 2, { M, M, M }, LONG_MAX }, /* FF.F */
+ { 3, 3, { M, M, M }, LONG_MAX }, /* FFF. */
+
+#if GMP_NUMB_BITS >= BITS_PER_ULONG
+ /* normal case, numb bigger than long */
+ { 2, 1, { 1 }, 0L }, /* 1_. */
+ { 2, 2, { 0, 1 }, 0L }, /* 10. */
+ { 2, 2, { 999, 1 }, 999L }, /* 19. */
+ { 3, 2, { 999, 1 }, 0L }, /* 19_. */
+
+#else
+ /* nails case, numb smaller than long */
+ { 2, 1, { 1 }, 1L << GMP_NUMB_BITS }, /* 1_. */
+ { 3, 1, { 1 }, 0L }, /* 1__. */
+
+ { 2, 2, { 99, 1 }, 99L + (1L << GMP_NUMB_BITS) }, /* 19. */
+ { 3, 2, { 1, 99 }, 1L << GMP_NUMB_BITS }, /* 91_. */
+ { 3, 3, { 0, 1, 99 }, 1L << GMP_NUMB_BITS }, /* 910. */
+
+#endif
+ };
+
+ mpf_t f;
+ unsigned long got;
+ int i;
+ mp_limb_t buf[20 + numberof(data[i].d)];
+
+ for (i = 0; i < numberof (data); i++)
+ {
+ refmpn_fill (buf, 10, CNST_LIMB(0xDEADBEEF));
+ refmpn_copy (buf+10, data[i].d, ABS(data[i].size));
+ refmpn_fill (buf+10+ABS(data[i].size), 10, CNST_LIMB(0xDEADBEEF));
+
+ PTR(f) = buf+10;
+ EXP(f) = data[i].exp;
+ SIZ(f) = data[i].size;
+ PREC(f) = numberof (data[i].d);
+ MPF_CHECK_FORMAT (f);
+
+ got = mpf_get_si (f);
+ if (got != data[i].want)
+ {
+ printf ("mpf_get_si wrong at limb data[%d]\n", i);
+ mpf_trace (" f", f);
+ mpn_trace (" d", data[i].d, data[i].size);
+ printf (" size %ld\n", (long) data[i].size);
+ printf (" exp %ld\n", (long) data[i].exp);
+ printf (" got %lu (0x%lX)\n", got, got);
+ printf (" want %lu (0x%lX)\n", data[i].want, data[i].want);
+ abort();
+ }
+ }
+}
+
+
+int
+main (void)
+{
+ tests_start ();
+
+ check_data ();
+ check_max ();
+ check_limbdata ();
+
+ tests_end ();
+ exit (0);
+}
projects / msp430-gcc.git / blobdiff