--- /dev/null
+/* Test file for mpfr_frac.
+
+Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR 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 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR 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 MPFR Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define PIP 70
+#define PFP 70
+#define PMAX (PIP+2*PFP)
+
+static void
+check0 (mpfr_ptr ip, mpfr_ptr fp, mp_prec_t prec, mp_rnd_t rnd)
+{
+ mpfr_t sum, tmp, dst, fp2;
+ int inex1, inex2;
+
+ mpfr_init2 (sum, PMAX);
+ mpfr_init2 (tmp, PMAX);
+ mpfr_init2 (dst, prec);
+ mpfr_init2 (fp2, prec);
+
+ if (MPFR_SIGN (ip) != MPFR_SIGN (fp))
+ {
+ printf ("Internal error (1)\n");
+ exit (1);
+ }
+ if (mpfr_add (sum, ip, fp, GMP_RNDZ))
+ {
+ printf ("Wrong inexact flag in mpfr_add\n");
+ exit (1);
+ }
+ if (MPFR_SIGN (sum) != MPFR_SIGN (fp))
+ {
+ printf ("Internal error (2)\n");
+ exit (1);
+ }
+
+ inex1 = mpfr_frac (dst, sum, rnd);
+ inex2 = mpfr_set (fp2, fp, rnd);
+ if (inex1 != inex2)
+ {
+ printf ("Wrong inexact flag in mpfr_frac for\n");
+ mpfr_out_str (stdout, 2, 0, sum, GMP_RNDN);
+ printf ("\nGot %d instead of %d\n", inex1, inex2);
+ exit (1);
+ }
+ if (!mpfr_number_p (dst) ||
+ MPFR_SIGN (dst) != MPFR_SIGN (fp2) ||
+ mpfr_cmp (dst, fp2))
+ {
+ printf ("Error in mpfr_frac (y, x, %s) with\nx = ",
+ mpfr_print_rnd_mode (rnd));
+ mpfr_out_str (stdout, 2, 0, sum, GMP_RNDN);
+ printf ("\nGot ");
+ mpfr_out_str (stdout, 2, 0, dst, GMP_RNDN);
+ printf ("\ninstead of ");
+ mpfr_out_str (stdout, 2, 0, fp2, GMP_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+
+ if (prec == PMAX)
+ {
+ inex1 = mpfr_frac (sum, sum, rnd);
+ if (inex1)
+ {
+ printf ("Wrong inexact flag in mpfr_frac\n");
+ exit (1);
+ }
+ if (!mpfr_number_p (sum) ||
+ MPFR_SIGN (sum) != MPFR_SIGN (fp) ||
+ mpfr_cmp (sum, fp))
+ {
+ printf ("Error in mpfr_frac (x, x, %s) with\nx = ",
+ mpfr_print_rnd_mode (rnd));
+ mpfr_add (tmp, ip, fp, GMP_RNDZ);
+ mpfr_out_str (stdout, 2, 0, tmp, GMP_RNDN);
+ printf ("\nGot ");
+ mpfr_out_str (stdout, 2, 0, sum, GMP_RNDN);
+ printf ("\ninstead of ");
+ mpfr_out_str (stdout, 2, 0, fp, GMP_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+ }
+
+ mpfr_clear (fp2);
+ mpfr_clear (dst);
+ mpfr_clear (tmp);
+ mpfr_clear (sum);
+}
+
+static void
+check1 (mpfr_ptr ip, mpfr_ptr fp)
+{
+ int rnd;
+
+ for (rnd = 0; rnd < GMP_RND_MAX ; rnd++)
+ {
+ check0 (ip, fp, PMAX, (mp_rnd_t) rnd);
+ check0 (ip, fp, 70, (mp_rnd_t) rnd);
+ mpfr_neg (fp, fp, GMP_RNDN);
+ mpfr_neg (ip, ip, GMP_RNDN);
+ check0 (ip, fp, PMAX, (mp_rnd_t) rnd);
+ check0 (ip, fp, 70, (mp_rnd_t) rnd);
+ mpfr_neg (fp, fp, GMP_RNDN);
+ mpfr_neg (ip, ip, GMP_RNDN);
+ }
+}
+
+static void
+special (void)
+{
+ mpfr_t z, t;
+
+ mpfr_init (z);
+ mpfr_init (t);
+
+ mpfr_set_nan (z);
+ mpfr_frac (t, z, GMP_RNDN);
+ if (!mpfr_nan_p (t))
+ {
+ printf ("Error for frac(NaN)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (z, 6);
+ mpfr_set_prec (t, 3);
+
+ mpfr_set_str_binary (z, "0.101101E3");
+ mpfr_frac (t, z, GMP_RNDN);
+ mpfr_set_str_binary (z, "0.101");
+ if (mpfr_cmp (t, z))
+ {
+ printf ("Error in frac(0.101101E3)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (z, 34);
+ mpfr_set_prec (t, 26);
+ mpfr_set_str_binary (z, "0.101101010000010011110011001101E9");
+ mpfr_frac (t, z, GMP_RNDN);
+ mpfr_set_str_binary (z, "0.000010011110011001101");
+ if (mpfr_cmp (t, z))
+ {
+ printf ("Error in frac(0.101101010000010011110011001101E9)\n");
+ exit (1);
+ }
+
+ mpfr_clear (z);
+ mpfr_clear (t);
+}
+
+#define TEST_FUNCTION mpfr_frac
+#include "tgeneric.c"
+
+int
+main (void)
+{
+ mpfr_t ip, fp;
+ int ni, nf1, nf2;
+
+ tests_start_mpfr ();
+
+ special ();
+
+ mpfr_init2 (ip, PIP);
+ mpfr_init2 (fp, PFP);
+
+ for (ni = -1; ni < PIP; ni++)
+ {
+ if (ni <= 0)
+ { /* ni + 1 */
+ mpfr_set_si (ip, ni, GMP_RNDN);
+ mpfr_add_ui (ip, ip, 1, GMP_RNDN);
+ }
+ else
+ { /* 2^ni + 1 */
+ mpfr_set_ui (ip, 1, GMP_RNDN);
+ mpfr_mul_2ui (ip, ip, ni, GMP_RNDN);
+ mpfr_add_ui (ip, ip, 1, GMP_RNDN);
+ }
+
+ mpfr_set_ui (fp, 0, GMP_RNDN);
+ check1 (ip, fp);
+
+ for (nf1 = 1; nf1 < PFP; nf1++)
+ {
+ mpfr_set_ui (fp, 1, GMP_RNDN);
+ mpfr_div_2ui (fp, fp, nf1, GMP_RNDN);
+ check1 (ip, fp);
+ nf2 = 1 + (randlimb () % (PFP - 1));
+ mpfr_set_ui (fp, 1, GMP_RNDN);
+ mpfr_div_2ui (fp, fp, nf2, GMP_RNDN);
+ mpfr_add_ui (fp, fp, 1, GMP_RNDN);
+ mpfr_div_2ui (fp, fp, nf1, GMP_RNDN);
+ check1 (ip, fp);
+ }
+ }
+
+ mpfr_set_ui (ip, 1, GMP_RNDN);
+ mpfr_div_ui (ip, ip, 0, GMP_RNDN);
+ mpfr_set_ui (fp, 0, GMP_RNDN);
+ check1 (ip, fp); /* test infinities */
+
+ mpfr_clear (ip);
+ mpfr_clear (fp);
+
+ test_generic (2, 1000, 10);
+
+ tests_end_mpfr ();
+ return 0;
+}
projects / msp430-gcc.git / blobdiff