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diff -Naurd mpfr-3.1.5-a/PATCHES mpfr-3.1.5-b/PATCHES
--- mpfr-3.1.5-a/PATCHES 2016-12-19 22:11:17.022676737 +0000
+++ mpfr-3.1.5-b/PATCHES 2016-12-19 22:11:17.094676820 +0000
@@ -0,0 +1 @@
+strtofr
diff -Naurd mpfr-3.1.5-a/VERSION mpfr-3.1.5-b/VERSION
--- mpfr-3.1.5-a/VERSION 2016-12-15 08:35:46.544430346 +0000
+++ mpfr-3.1.5-b/VERSION 2016-12-19 22:11:17.094676820 +0000
@@ -1 +1 @@
-3.1.5-p1
+3.1.5-p2
diff -Naurd mpfr-3.1.5-a/src/mpfr.h mpfr-3.1.5-b/src/mpfr.h
--- mpfr-3.1.5-a/src/mpfr.h 2016-12-15 08:35:46.540430340 +0000
+++ mpfr-3.1.5-b/src/mpfr.h 2016-12-19 22:11:17.090676815 +0000
@@ -27,7 +27,7 @@
#define MPFR_VERSION_MAJOR 3
#define MPFR_VERSION_MINOR 1
#define MPFR_VERSION_PATCHLEVEL 5
-#define MPFR_VERSION_STRING "3.1.5-p1"
+#define MPFR_VERSION_STRING "3.1.5-p2"
/* Macros dealing with MPFR VERSION */
#define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
diff -Naurd mpfr-3.1.5-a/src/strtofr.c mpfr-3.1.5-b/src/strtofr.c
--- mpfr-3.1.5-a/src/strtofr.c 2016-09-27 07:58:15.000000000 +0000
+++ mpfr-3.1.5-b/src/strtofr.c 2016-12-19 22:11:17.066676788 +0000
@@ -743,11 +743,14 @@
of the pstr_size most significant digits of pstr->mant, with
equality in case exact is non-zero. */
- /* test if rounding is possible, and if so exit the loop */
- if (exact || mpfr_can_round_raw (result, ysize,
- (pstr->negative) ? -1 : 1,
- ysize_bits - err - 1,
- MPFR_RNDN, rnd, MPFR_PREC(x)))
+ /* test if rounding is possible, and if so exit the loop.
+ Note: we also need to be able to determine the correct ternary value,
+ thus we use the MPFR_PREC(x) + (rnd == MPFR_RNDN) trick.
+ For example if result = xxx...xxx111...111 and rnd = RNDN,
+ then we know the correct rounding is xxx...xx(x+1), but we cannot know
+ the correct ternary value. */
+ if (exact || mpfr_round_p (result, ysize, ysize_bits - err - 1,
+ MPFR_PREC(x) + (rnd == MPFR_RNDN)))
break;
next_loop:
diff -Naurd mpfr-3.1.5-a/src/version.c mpfr-3.1.5-b/src/version.c
--- mpfr-3.1.5-a/src/version.c 2016-12-15 08:35:46.544430346 +0000
+++ mpfr-3.1.5-b/src/version.c 2016-12-19 22:11:17.094676820 +0000
@@ -25,5 +25,5 @@
const char *
mpfr_get_version (void)
{
- return "3.1.5-p1";
+ return "3.1.5-p2";
}
diff -Naurd mpfr-3.1.5-a/tests/tstrtofr.c mpfr-3.1.5-b/tests/tstrtofr.c
--- mpfr-3.1.5-a/tests/tstrtofr.c 2016-09-27 07:58:14.000000000 +0000
+++ mpfr-3.1.5-b/tests/tstrtofr.c 2016-12-19 22:11:17.066676788 +0000
@@ -1191,6 +1191,24 @@
mpfr_clears (e, x1, x2, (mpfr_ptr) 0);
}
+/* Note: the number is 5^47/2^9. */
+static void
+bug20161217 (void)
+{
+ mpfr_t fp, z;
+ static const char * num = "0.1387778780781445675529539585113525390625e31";
+ int inex;
+
+ mpfr_init2 (fp, 110);
+ mpfr_init2 (z, 110);
+ inex = mpfr_strtofr (fp, num, NULL, 10, MPFR_RNDN);
+ MPFR_ASSERTN(inex == 0);
+ mpfr_set_str_binary (z, "10001100001000010011110110011101101001010000001011011110010001010100010100100110111101000010001011001100001101E-9");
+ MPFR_ASSERTN(mpfr_equal_p (fp, z));
+ mpfr_clear (fp);
+ mpfr_clear (z);
+}
+
int
main (int argc, char *argv[])
{
@@ -1205,6 +1223,7 @@
test20100310 ();
bug20120814 ();
bug20120829 ();
+ bug20161217 ();
tests_end_mpfr ();
return 0;
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