Improve coverage of const_pi and const_log2 (Test for prec > 20000).

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@2688 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/tconst_log2.c b/tests/tconst_log2.c
index df5b7c1e8..77a2f5377 100644
--- a/tests/tconst_log2.c
+++ b/tests/tconst_log2.c
@@ -66,6 +66,23 @@ check (mp_prec_t p0, mp_prec_t p1)
   mpfr_clear (z);
 }
 
+static void
+check_large(void)
+{
+  mpfr_t x, y;
+  mpfr_init2(x, 25000);
+  mpfr_init2(y, 26000);
+  mpfr_const_log2(x, GMP_RNDN); /* First one ! */
+  mpfr_const_log2(y, GMP_RNDN); /* Then the other - cache - */
+  mpfr_prec_round(y, 25000, GMP_RNDN);
+  if (mpfr_cmp(x,y))
+    {
+      printf("const_pi: error for large prec\n");
+      exit(1);
+    }
+  mpfr_clears(x,y,NULL);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -121,6 +138,8 @@ main (int argc, char *argv[])
 
   mpfr_clear(x);
 
+  check_large();
+
   tests_end_mpfr ();
   return 0;
 }