Imported gcc-4.4.3

[msp430-gcc.git] / mpfr / tests / tadd1sp.c

diff --git a/mpfr/tests/tadd1sp.c b/mpfr/tests/tadd1sp.c
new file mode 100644 (file)
index 0000000..d8efe32
--- /dev/null
+++ b/mpfr/tests/tadd1sp.c
@@ -0,0 +1,185 @@
+/* Test file for mpfr_add1sp.
+
+Copyright 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"
+
+static void check_special (void);
+static void check_random (mpfr_prec_t p);
+
+static void
+check_overflow (void)
+{
+  mpfr_t x, y, z1, z2;
+  mp_exp_t emin, emax;
+
+  emin = mpfr_get_emin ();
+  emax = mpfr_get_emax ();
+
+  set_emin (-1021);
+  set_emax (1024);
+
+  mpfr_inits (x, y, z1, z2, (mpfr_ptr) 0);
+
+  mpfr_set_str1 (x, "8.00468257869324898448e+307");
+  mpfr_set_str1 (y, "7.44784712422708645156e+307");
+  mpfr_add1sp (z1, x, y, GMP_RNDN);
+  mpfr_add1   (z2, x, y, GMP_RNDN);
+  if (mpfr_cmp (z1, z2))
+    {
+      printf ("Overflow bug in add1sp.\n");
+      exit (1);
+    }
+  mpfr_clears (x, y, z1, z2, (mpfr_ptr) 0);
+
+  set_emin (emin);
+  set_emax (emax);
+}
+
+int
+main (void)
+{
+  mpfr_prec_t p;
+
+  tests_start_mpfr ();
+
+  check_special ();
+  for(p = 2 ; p < 200 ; p++)
+    check_random (p);
+  check_overflow ();
+
+  tests_end_mpfr ();
+  return 0;
+}
+
+#define STD_ERROR \
+  {\
+    printf("ERROR: for %s and p=%lu and i=%d:\nB=",\
+           mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\
+    mpfr_print_binary(b);\
+    printf("\nC="); mpfr_print_binary(c);\
+    printf("\nadd1  : "); mpfr_print_binary(a1);\
+    printf("\nadd1sp: "); mpfr_print_binary(a2);\
+    putchar('\n');\
+    exit(1);\
+  }
+
+#define STD_ERROR2 \
+  {\
+    printf("ERROR: Wrong inexact flag for %s and p=%lu and i=%d:\nB=",\
+           mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\
+    mpfr_print_binary(b);\
+    printf("\nC="); mpfr_print_binary(c);\
+    printf("\nA="); mpfr_print_binary(a1);\
+    printf("\nAdd1: %d. Add1sp: %d\n", \
+           inexact1, inexact2); \
+    exit(1);\
+  }
+
+#define SET_PREC(_p) \
+  { \
+    p = _p; \
+    mpfr_set_prec(a1, _p); mpfr_set_prec(a2, _p); \
+    mpfr_set_prec(b,  _p); mpfr_set_prec(c,  _p); \
+  }
+
+static void
+check_random (mp_prec_t p)
+{
+  mpfr_t a1,b,c,a2;
+  int r;
+  int i, inexact1, inexact2;
+
+  mpfr_inits2 (p, a1, b, c, a2, (mpfr_ptr) 0);
+
+  for (i = 0 ; i < 500 ; i++)
+    {
+      mpfr_urandomb (b, RANDS);
+      mpfr_urandomb (c, RANDS);
+      if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c))
+        {
+          if (MPFR_GET_EXP(b) < MPFR_GET_EXP(c))
+            mpfr_swap(b, c);
+          if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c))
+            for (r = 0 ; r < GMP_RND_MAX ; r++)
+              {
+                inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
+                inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
+                if (mpfr_cmp(a1, a2))
+                  STD_ERROR;
+                if (inexact1 != inexact2)
+                  STD_ERROR2;
+              }
+        }
+    }
+
+  mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0);
+}
+
+static void
+check_special (void)
+{
+  mpfr_t a1,a2,b,c;
+  int r;
+  mpfr_prec_t p;
+  int i = -1, inexact1, inexact2;
+
+  mpfr_inits (a1, a2, b, c, (mpfr_ptr) 0);
+
+  for (r = 0 ; r < GMP_RND_MAX ; r++)
+    {
+      SET_PREC(53);
+      mpfr_set_str1 (b, "1@100");
+      mpfr_set_str1 (c, "1@1");
+      inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
+      inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
+      if (mpfr_cmp(a1, a2))
+        STD_ERROR;
+      if (inexact1 != inexact2)
+        STD_ERROR2;
+      mpfr_set_str_binary (b, "1E53");
+      mpfr_set_str_binary (c, "1E0");
+      inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
+      inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
+      if (mpfr_cmp(a1, a2))
+        STD_ERROR;
+      if (inexact1 != inexact2)
+        STD_ERROR2;
+    }
+
+  mpfr_set_prec (c, 2);
+  mpfr_set_prec (a1, 2);
+  mpfr_set_prec (a2, 2);
+  mpfr_set_str_binary (c, "1.0e1");
+  mpfr_set_str_binary (a2, "1.1e-1");
+  mpfr_set_str_binary (a1, "0.11E2");
+  mpfr_add1sp (a2, c, a2, GMP_RNDN);
+  if (mpfr_cmp (a1, a2))
+    {
+      printf ("Regression reuse test failed!\n");
+      exit (1);
+    }
+
+  mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0);
+}