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crosstool-ng/patches/mpfr/3.0.0/160-mpfr_sub1.patch
Kirill K. Smirnov 2e6a56d1cc patches: add patches for mpfr 
This changeset adds official patches published on
mpfr website.

Signed-off-by: Kirill K. Smirnov <kirill.k.smirnov@gmail.com>
2016-09-18 00:01:42 +03:00

629 lines
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diff -Naurd mpfr-3.0.0-a/PATCHES mpfr-3.0.0-b/PATCHES
--- mpfr-3.0.0-a/PATCHES 2010-10-21 20:59:32.000000000 +0000
+++ mpfr-3.0.0-b/PATCHES 2010-10-21 20:59:32.000000000 +0000
@@ -0,0 +1 @@
+mpfr_sub1
diff -Naurd mpfr-3.0.0-a/VERSION mpfr-3.0.0-b/VERSION
--- mpfr-3.0.0-a/VERSION 2010-10-21 20:28:38.000000000 +0000
+++ mpfr-3.0.0-b/VERSION 2010-10-21 20:59:32.000000000 +0000
@@ -1 +1 @@
-3.0.0-p5
+3.0.0-p6
diff -Naurd mpfr-3.0.0-a/mpfr.h mpfr-3.0.0-b/mpfr.h
--- mpfr-3.0.0-a/mpfr.h 2010-10-21 20:28:38.000000000 +0000
+++ mpfr-3.0.0-b/mpfr.h 2010-10-21 20:59:32.000000000 +0000
@@ -27,7 +27,7 @@
#define MPFR_VERSION_MAJOR 3
#define MPFR_VERSION_MINOR 0
#define MPFR_VERSION_PATCHLEVEL 0
-#define MPFR_VERSION_STRING "3.0.0-p5"
+#define MPFR_VERSION_STRING "3.0.0-p6"
/* Macros dealing with MPFR VERSION */
#define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
diff -Naurd mpfr-3.0.0-a/sub1.c mpfr-3.0.0-b/sub1.c
--- mpfr-3.0.0-a/sub1.c 2010-06-10 11:00:14.000000000 +0000
+++ mpfr-3.0.0-b/sub1.c 2010-10-21 20:59:32.000000000 +0000
@@ -37,7 +37,9 @@
mp_size_t cancel2, an, bn, cn, cn0;
mp_limb_t *ap, *bp, *cp;
mp_limb_t carry, bb, cc, borrow = 0;
- int inexact, shift_b, shift_c, is_exact = 1, down = 0, add_exp = 0;
+ int inexact, shift_b, shift_c, add_exp = 0;
+ int cmp_low = 0; /* used for rounding to nearest: 0 if low(b) = low(c),
+ negative if low(b) < low(c), positive if low(b)>low(c) */
int sh, k;
MPFR_TMP_DECL(marker);
@@ -196,7 +198,8 @@
}
#ifdef DEBUG
- printf ("shift_b=%d shift_c=%d diffexp=%lu\n", shift_b, shift_c,
+ printf ("rnd=%s shift_b=%d shift_c=%d diffexp=%lu\n",
+ mpfr_print_rnd_mode (rnd_mode), shift_b, shift_c,
(unsigned long) diff_exp);
#endif
@@ -307,17 +310,18 @@
{
if (MPFR_LIKELY(sh))
{
- is_exact = (carry == 0);
/* can decide except when carry = 2^(sh-1) [middle]
or carry = 0 [truncate, but cannot decide inexact flag] */
- down = (carry < (MPFR_LIMB_ONE << (sh - 1)));
if (carry > (MPFR_LIMB_ONE << (sh - 1)))
goto add_one_ulp;
- else if ((0 < carry) && down)
+ else if ((0 < carry) && (carry < (MPFR_LIMB_ONE << (sh - 1))))
{
inexact = -1; /* result if smaller than exact value */
goto truncate;
}
+ /* now carry = 2^(sh-1), in which case cmp_low=2,
+ or carry = 0, in which case cmp_low=0 */
+ cmp_low = (carry == 0) ? 0 : 2;
}
}
else /* directed rounding: set rnd_mode to RNDZ iff toward zero */
@@ -344,12 +348,32 @@
cn -= (long int) an + cancel2;
#ifdef DEBUG
- printf ("last %d bits from a are %lu, bn=%ld, cn=%ld\n",
+ printf ("last sh=%d bits from a are %lu, bn=%ld, cn=%ld\n",
sh, (unsigned long) carry, (long) bn, (long) cn);
#endif
+ /* for rounding to nearest, we couldn't conclude up to here in the following
+ cases:
+ 1. sh = 0, then cmp_low=0: we can either truncate, subtract one ulp
+ or add one ulp: -1 ulp < low(b)-low(c) < 1 ulp
+ 2. sh > 0 but the low sh bits from high(b)-high(c) equal 2^(sh-1):
+ -0.5 ulp <= -1/2^sh < low(b)-low(c)-0.5 < 1/2^sh <= 0.5 ulp
+ we can't decide the rounding, in that case cmp_low=2:
+ either we truncate and flag=-1, or we add one ulp and flag=1
+ 3. the low sh>0 bits from high(b)-high(c) equal 0: we know we have to
+ truncate but we can't decide the ternary value, here cmp_low=0:
+ -0.5 ulp <= -1/2^sh < low(b)-low(c) < 1/2^sh <= 0.5 ulp
+ we always truncate and inexact can be any of -1,0,1
+ */
+
+ /* note: here cn might exceed cn0, in which case we consider a zero limb */
for (k = 0; (bn > 0) || (cn > 0); k = 1)
{
+ /* if cmp_low < 0, we know low(b) - low(c) < 0
+ if cmp_low > 0, we know low(b) - low(c) > 0
+ (more precisely if cmp_low = 2, low(b) - low(c) = 0.5 ulp so far)
+ if cmp_low = 0, so far low(b) - low(c) = 0 */
+
/* get next limbs */
bb = (bn > 0) ? bp[--bn] : 0;
if ((cn > 0) && (cn-- <= cn0))
@@ -357,76 +381,115 @@
else
cc = 0;
- /* down is set when low(b) < low(c) */
- if (down == 0)
- down = (bb < cc);
+ /* cmp_low compares low(b) and low(c) */
+ if (cmp_low == 0) /* case 1 or 3 */
+ cmp_low = (bb < cc) ? -2+k : (bb > cc) ? 1 : 0;
+
+ /* Case 1 for k=0 splits into 7 subcases:
+ 1a: bb > cc + half
+ 1b: bb = cc + half
+ 1c: 0 < bb - cc < half
+ 1d: bb = cc
+ 1e: -half < bb - cc < 0
+ 1f: bb - cc = -half
+ 1g: bb - cc < -half
+
+ Case 2 splits into 3 subcases:
+ 2a: bb > cc
+ 2b: bb = cc
+ 2c: bb < cc
+
+ Case 3 splits into 3 subcases:
+ 3a: bb > cc
+ 3b: bb = cc
+ 3c: bb < cc
+ */
/* the case rounding to nearest with sh=0 is special since one couldn't
subtract above 1/2 ulp in the trailing limb of the result */
- if ((rnd_mode == MPFR_RNDN) && sh == 0 && k == 0)
+ if (rnd_mode == MPFR_RNDN && sh == 0 && k == 0) /* case 1 for k=0 */
{
mp_limb_t half = MPFR_LIMB_HIGHBIT;
- is_exact = (bb == cc);
-
/* add one ulp if bb > cc + half
truncate if cc - half < bb < cc + half
sub one ulp if bb < cc - half
*/
- if (down)
+ if (cmp_low < 0) /* bb < cc: -1 ulp < low(b) - low(c) < 0,
+ cases 1e, 1f and 1g */
{
if (cc >= half)
cc -= half;
- else
+ else /* since bb < cc < half, bb+half < 2*half */
bb += half;
+ /* now we have bb < cc + half:
+ we have to subtract one ulp if bb < cc,
+ and truncate if bb > cc */
}
- else /* bb >= cc */
+ else if (cmp_low >= 0) /* bb >= cc, cases 1a to 1d */
{
if (cc < half)
cc += half;
- else
+ else /* since bb >= cc >= half, bb - half >= 0 */
bb -= half;
+ /* now we have bb > cc - half: we have to add one ulp if bb > cc,
+ and truncate if bb < cc */
+ if (cmp_low > 0)
+ cmp_low = 2;
}
}
#ifdef DEBUG
- printf (" bb=%lu cc=%lu down=%d is_exact=%d\n",
- (unsigned long) bb, (unsigned long) cc, down, is_exact);
+ printf ("k=%u bb=%lu cc=%lu cmp_low=%d\n", k,
+ (unsigned long) bb, (unsigned long) cc, cmp_low);
#endif
- if (bb < cc)
+ if (cmp_low < 0) /* low(b) - low(c) < 0: either truncate or subtract
+ one ulp */
{
if (rnd_mode == MPFR_RNDZ)
- goto sub_one_ulp;
+ goto sub_one_ulp; /* set inexact=-1 */
else if (rnd_mode != MPFR_RNDN) /* round away */
{
inexact = 1;
goto truncate;
}
- else /* round to nearest: special case here since for sh=k=0
- bb = bb0 - MPFR_LIMB_HIGHBIT */
+ else /* round to nearest */
{
- if (is_exact && sh == 0)
- {
- /* For k=0 we can't decide exactness since it may depend
- from low order bits.
- For k=1, the first low limbs matched: low(b)-low(c)<0. */
- if (k)
- {
- inexact = 1;
- goto truncate;
- }
- }
- else if (down && sh == 0)
- goto sub_one_ulp;
- else
- {
- inexact = (is_exact) ? 1 : -1;
+ /* If cmp_low < 0 and bb > cc, then -0.5 ulp < low(b)-low(c) < 0,
+ whatever the value of sh.
+ If sh>0, then cmp_low < 0 implies that the initial neglected
+ sh bits were 0 (otherwise cmp_low=2 initially), thus the
+ weight of the new bits is less than 0.5 ulp too.
+ If k > 0 (and sh=0) this means that either the first neglected
+ limbs bb and cc were equal (thus cmp_low was 0 for k=0),
+ or we had bb - cc = -0.5 ulp or 0.5 ulp.
+ The last case is not possible here since we would have
+ cmp_low > 0 which is sticky.
+ In the first case (where we have cmp_low = -1), we truncate,
+ whereas in the 2nd case we have cmp_low = -2 and we subtract
+ one ulp.
+ */
+ if (bb > cc || sh > 0 || cmp_low == -1)
+ { /* -0.5 ulp < low(b)-low(c) < 0,
+ bb > cc corresponds to cases 1e and 1f1
+ sh > 0 corresponds to cases 3c and 3b3
+ cmp_low = -1 corresponds to case 1d3 (also 3b3) */
+ inexact = 1;
goto truncate;
}
+ else if (bb < cc) /* here sh = 0 and low(b)-low(c) < -0.5 ulp,
+ this corresponds to cases 1g and 1f3 */
+ goto sub_one_ulp;
+ /* the only case where we can't conclude is sh=0 and bb=cc,
+ i.e., we have low(b) - low(c) = -0.5 ulp (up to now), thus
+ we don't know if we must truncate or subtract one ulp.
+ Note: for sh=0 we can't have low(b) - low(c) = -0.5 ulp up to
+ now, since low(b) - low(c) > 1/2^sh */
}
}
- else if (bb > cc)
+ else if (cmp_low > 0) /* 0 < low(b) - low(c): either truncate or
+ add one ulp */
{
if (rnd_mode == MPFR_RNDZ)
{
@@ -437,34 +500,70 @@
goto add_one_ulp;
else /* round to nearest */
{
- if (is_exact)
+ if (bb > cc)
{
- inexact = -1;
- goto truncate;
+ /* if sh=0, then bb>cc means that low(b)-low(c) > 0.5 ulp,
+ and similarly when cmp_low=2 */
+ if (cmp_low == 2) /* cases 1a, 1b1, 2a and 2b1 */
+ goto add_one_ulp;
+ /* sh > 0 and cmp_low > 0: this implies that the sh initial
+ neglected bits were 0, and the remaining low(b)-low(c)>0,
+ but its weight is less than 0.5 ulp */
+ else /* 0 < low(b) - low(c) < 0.5 ulp, this corresponds to
+ cases 3a, 1d1 and 3b1 */
+ {
+ inexact = -1;
+ goto truncate;
+ }
}
- else if (down)
+ else if (bb < cc) /* 0 < low(b) - low(c) < 0.5 ulp, cases 1c,
+ 1b3, 2b3 and 2c */
{
- inexact = 1;
+ inexact = -1;
goto truncate;
}
- else
- goto add_one_ulp;
+ /* the only case where we can't conclude is bb=cc, i.e.,
+ low(b) - low(c) = 0.5 ulp (up to now), thus we don't know
+ if we must truncate or add one ulp. */
}
}
+ /* after k=0, we cannot conclude in the following cases, we split them
+ according to the values of bb and cc for k=1:
+ 1b. sh=0 and cmp_low = 1 and bb-cc = half [around 0.5 ulp]
+ 1b1. bb > cc: add one ulp, inex = 1
+ 1b2: bb = cc: cannot conclude
+ 1b3: bb < cc: truncate, inex = -1
+ 1d. sh=0 and cmp_low = 0 and bb-cc = 0 [around 0]
+ 1d1: bb > cc: truncate, inex = -1
+ 1d2: bb = cc: cannot conclude
+ 1d3: bb < cc: truncate, inex = +1
+ 1f. sh=0 and cmp_low = -1 and bb-cc = -half [around -0.5 ulp]
+ 1f1: bb > cc: truncate, inex = +1
+ 1f2: bb = cc: cannot conclude
+ 1f3: bb < cc: sub one ulp, inex = -1
+ 2b. sh > 0 and cmp_low = 2 and bb=cc [around 0.5 ulp]
+ 2b1. bb > cc: add one ulp, inex = 1
+ 2b2: bb = cc: cannot conclude
+ 2b3: bb < cc: truncate, inex = -1
+ 3b. sh > 0 and cmp_low = 0 [around 0]
+ 3b1. bb > cc: truncate, inex = -1
+ 3b2: bb = cc: cannot conclude
+ 3b3: bb < cc: truncate, inex = +1
+ */
}
- if ((rnd_mode == MPFR_RNDN) && !is_exact)
+ if ((rnd_mode == MPFR_RNDN) && cmp_low != 0)
{
/* even rounding rule */
if ((ap[0] >> sh) & 1)
{
- if (down)
+ if (cmp_low < 0)
goto sub_one_ulp;
else
goto add_one_ulp;
}
else
- inexact = (down) ? 1 : -1;
+ inexact = (cmp_low > 0) ? -1 : 1;
}
else
inexact = 0;
diff -Naurd mpfr-3.0.0-a/tests/tfma.c mpfr-3.0.0-b/tests/tfma.c
--- mpfr-3.0.0-a/tests/tfma.c 2010-06-10 11:00:13.000000000 +0000
+++ mpfr-3.0.0-b/tests/tfma.c 2010-10-21 20:59:32.000000000 +0000
@@ -337,6 +337,94 @@
mpfr_clears (x, y, z, r, (mpfr_ptr) 0);
}
+static void
+bug20101018 (void)
+{
+ mpfr_t x, y, z, t, u;
+ int i;
+
+ mpfr_init2 (x, 64);
+ mpfr_init2 (y, 64);
+ mpfr_init2 (z, 64);
+ mpfr_init2 (t, 64);
+ mpfr_init2 (u, 64);
+
+ mpfr_set_str (x, "0xf.fffffffffffffffp-14766", 16, MPFR_RNDN);
+ mpfr_set_str (y, "-0xf.fffffffffffffffp+317", 16, MPFR_RNDN);
+ mpfr_set_str (z, "0x8.3ffffffffffe3ffp-14443", 16, MPFR_RNDN);
+ mpfr_set_str (t, "0x8.7ffffffffffc7ffp-14444", 16, MPFR_RNDN);
+ i = mpfr_fma (u, x, y, z, MPFR_RNDN);
+ if (mpfr_cmp (u, t) != 0)
+ {
+ printf ("Wrong result in bug20101018 (a)\n");
+ printf ("Expected ");
+ mpfr_out_str (stdout, 16, 0, t, MPFR_RNDN);
+ printf ("\nGot ");
+ mpfr_out_str (stdout, 16, 0, u, MPFR_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+ if (i <= 0)
+ {
+ printf ("Wrong ternary value in bug20101018 (a)\n");
+ printf ("Expected > 0\n");
+ printf ("Got %d\n", i);
+ exit (1);
+ }
+
+ mpfr_set_str (x, "-0xf.fffffffffffffffp-11420", 16, MPFR_RNDN);
+ mpfr_set_str (y, "0xf.fffffffffffffffp+9863", 16, MPFR_RNDN);
+ mpfr_set_str (z, "0x8.fffff80ffffffffp-1551", 16, MPFR_RNDN);
+ mpfr_set_str (t, "0x9.fffff01ffffffffp-1552", 16, MPFR_RNDN);
+ i = mpfr_fma (u, x, y, z, MPFR_RNDN);
+ if (mpfr_cmp (u, t) != 0)
+ {
+ printf ("Wrong result in bug20101018 (b)\n");
+ printf ("Expected ");
+ mpfr_out_str (stdout, 16, 0, t, MPFR_RNDN);
+ printf ("\nGot ");
+ mpfr_out_str (stdout, 16, 0, u, MPFR_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+ if (i <= 0)
+ {
+ printf ("Wrong ternary value in bug20101018 (b)\n");
+ printf ("Expected > 0\n");
+ printf ("Got %d\n", i);
+ exit (1);
+ }
+
+ mpfr_set_str (x, "0xf.fffffffffffffffp-2125", 16, MPFR_RNDN);
+ mpfr_set_str (y, "-0xf.fffffffffffffffp-6000", 16, MPFR_RNDN);
+ mpfr_set_str (z, "0x8p-8119", 16, MPFR_RNDN);
+ mpfr_set_str (t, "0x8.000000000000001p-8120", 16, MPFR_RNDN);
+ i = mpfr_fma (u, x, y, z, MPFR_RNDN);
+ if (mpfr_cmp (u, t) != 0)
+ {
+ printf ("Wrong result in bug20101018 (c)\n");
+ printf ("Expected ");
+ mpfr_out_str (stdout, 16, 0, t, MPFR_RNDN);
+ printf ("\nGot ");
+ mpfr_out_str (stdout, 16, 0, u, MPFR_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+ if (i <= 0)
+ {
+ printf ("Wrong ternary value in bug20101018 (c)\n");
+ printf ("Expected > 0\n");
+ printf ("Got %d\n", i);
+ exit (1);
+ }
+
+ mpfr_clear (x);
+ mpfr_clear (y);
+ mpfr_clear (z);
+ mpfr_clear (t);
+ mpfr_clear (u);
+}
+
int
main (int argc, char *argv[])
{
@@ -345,6 +433,8 @@
tests_start_mpfr ();
+ bug20101018 ();
+
mpfr_init (x);
mpfr_init (s);
mpfr_init (y);
diff -Naurd mpfr-3.0.0-a/tests/tsub.c mpfr-3.0.0-b/tests/tsub.c
--- mpfr-3.0.0-a/tests/tsub.c 2010-06-10 11:00:13.000000000 +0000
+++ mpfr-3.0.0-b/tests/tsub.c 2010-10-21 20:59:32.000000000 +0000
@@ -201,6 +201,8 @@
if (mpfr_cmp (z, x))
{
printf ("Error in mpfr_sub (2)\n");
+ printf ("Expected "); mpfr_print_binary (x); puts ("");
+ printf ("Got "); mpfr_print_binary (z); puts ("");
exit (1);
}
mpfr_set_str_binary (x, "1.1110111011110001110111011111111111101000011001011100101100101101");
@@ -478,6 +480,156 @@
mpfr_clear (u);
}
+/* Bug found by Jakub Jelinek
+ * http://bugzilla.redhat.com/643657
+ * https://gforge.inria.fr/tracker/index.php?func=detail&aid=11301
+ * The consequence can be either an assertion failure (i = 2 in the
+ * testcase below, in debug mode) or an incorrectly rounded value.
+ */
+static void
+bug20101017 (void)
+{
+ mpfr_t a, b, c;
+ int inex;
+ int i;
+
+ mpfr_init2 (a, GMP_NUMB_BITS * 2);
+ mpfr_init2 (b, GMP_NUMB_BITS);
+ mpfr_init2 (c, GMP_NUMB_BITS);
+
+ /* a = 2^(2N) + k.2^(2N-1) + 2^N and b = 1
+ with N = GMP_NUMB_BITS and k = 0 or 1.
+ c = a - b should round to the same value as a. */
+
+ for (i = 2; i <= 3; i++)
+ {
+ mpfr_set_ui_2exp (a, i, GMP_NUMB_BITS - 1, MPFR_RNDN);
+ mpfr_add_ui (a, a, 1, MPFR_RNDN);
+ mpfr_mul_2ui (a, a, GMP_NUMB_BITS, MPFR_RNDN);
+ mpfr_set_ui (b, 1, MPFR_RNDN);
+ inex = mpfr_sub (c, a, b, MPFR_RNDN);
+ mpfr_set (b, a, MPFR_RNDN);
+ if (! mpfr_equal_p (c, b))
+ {
+ printf ("Error in bug20101017 for i = %d.\n", i);
+ printf ("Expected ");
+ mpfr_out_str (stdout, 16, 0, b, MPFR_RNDN);
+ putchar ('\n');
+ printf ("Got ");
+ mpfr_out_str (stdout, 16, 0, c, MPFR_RNDN);
+ putchar ('\n');
+ exit (1);
+ }
+ if (inex >= 0)
+ {
+ printf ("Error in bug20101017 for i = %d: bad inex value.\n", i);
+ printf ("Expected negative, got %d.\n", inex);
+ exit (1);
+ }
+ }
+
+ mpfr_set_prec (a, 64);
+ mpfr_set_prec (b, 129);
+ mpfr_set_prec (c, 2);
+ mpfr_set_str_binary (b, "0.100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001E65");
+ mpfr_set_str_binary (c, "0.10E1");
+ inex = mpfr_sub (a, b, c, MPFR_RNDN);
+ if (mpfr_cmp_ui_2exp (a, 1, 64) != 0 || inex >= 0)
+ {
+ printf ("Error in mpfr_sub for b-c for b=2^64+1+2^(-64), c=1\n");
+ printf ("Expected result 2^64 with inex < 0\n");
+ printf ("Got "); mpfr_print_binary (a);
+ printf (" with inex=%d\n", inex);
+ exit (1);
+ }
+
+ mpfr_clears (a, b, c, (mpfr_ptr) 0);
+}
+
+/* hard test of rounding */
+static void
+check_rounding (void)
+{
+ mpfr_t a, b, c, res;
+ mpfr_prec_t p;
+ long k, l;
+ int i;
+
+#define MAXKL (2 * GMP_NUMB_BITS)
+ for (p = MPFR_PREC_MIN; p <= GMP_NUMB_BITS; p++)
+ {
+ mpfr_init2 (a, p);
+ mpfr_init2 (res, p);
+ mpfr_init2 (b, p + 1 + MAXKL);
+ mpfr_init2 (c, MPFR_PREC_MIN);
+
+ /* b = 2^p + 1 + 2^(-k), c = 2^(-l) */
+ for (k = 0; k <= MAXKL; k++)
+ for (l = 0; l <= MAXKL; l++)
+ {
+ mpfr_set_ui_2exp (b, 1, p, MPFR_RNDN);
+ mpfr_add_ui (b, b, 1, MPFR_RNDN);
+ mpfr_mul_2ui (b, b, k, MPFR_RNDN);
+ mpfr_add_ui (b, b, 1, MPFR_RNDN);
+ mpfr_div_2ui (b, b, k, MPFR_RNDN);
+ mpfr_set_ui_2exp (c, 1, -l, MPFR_RNDN);
+ i = mpfr_sub (a, b, c, MPFR_RNDN);
+ /* b - c = 2^p + 1 + 2^(-k) - 2^(-l), should be rounded to
+ 2^p for l <= k, and 2^p+2 for l < k */
+ if (l <= k)
+ {
+ if (mpfr_cmp_ui_2exp (a, 1, p) != 0)
+ {
+ printf ("Wrong result in check_rounding\n");
+ printf ("p=%lu k=%ld l=%ld\n", p, k, l);
+ printf ("b="); mpfr_print_binary (b); puts ("");
+ printf ("c="); mpfr_print_binary (c); puts ("");
+ printf ("Expected 2^%lu\n", p);
+ printf ("Got "); mpfr_print_binary (a); puts ("");
+ exit (1);
+ }
+ if (i >= 0)
+ {
+ printf ("Wrong ternary value in check_rounding\n");
+ printf ("p=%lu k=%ld l=%ld\n", p, k, l);
+ printf ("b="); mpfr_print_binary (b); puts ("");
+ printf ("c="); mpfr_print_binary (c); puts ("");
+ printf ("a="); mpfr_print_binary (a); puts ("");
+ printf ("Expected < 0, got %d\n", i);
+ exit (1);
+ }
+ }
+ else /* l < k */
+ {
+ mpfr_set_ui_2exp (res, 1, p, MPFR_RNDN);
+ mpfr_add_ui (res, res, 2, MPFR_RNDN);
+ if (mpfr_cmp (a, res) != 0)
+ {
+ printf ("Wrong result in check_rounding\n");
+ printf ("b="); mpfr_print_binary (b); puts ("");
+ printf ("c="); mpfr_print_binary (c); puts ("");
+ printf ("Expected "); mpfr_print_binary (res); puts ("");
+ printf ("Got "); mpfr_print_binary (a); puts ("");
+ exit (1);
+ }
+ if (i <= 0)
+ {
+ printf ("Wrong ternary value in check_rounding\n");
+ printf ("b="); mpfr_print_binary (b); puts ("");
+ printf ("c="); mpfr_print_binary (c); puts ("");
+ printf ("Expected > 0, got %d\n", i);
+ exit (1);
+ }
+ }
+ }
+
+ mpfr_clear (a);
+ mpfr_clear (res);
+ mpfr_clear (b);
+ mpfr_clear (c);
+ }
+}
+
#define TEST_FUNCTION test_sub
#define TWO_ARGS
#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), randlimb () % 100, RANDS)
@@ -491,6 +643,8 @@
tests_start_mpfr ();
+ bug20101017 ();
+ check_rounding ();
check_diverse ();
check_inexact ();
bug_ddefour ();
diff -Naurd mpfr-3.0.0-a/version.c mpfr-3.0.0-b/version.c
--- mpfr-3.0.0-a/version.c 2010-10-21 20:28:38.000000000 +0000
+++ mpfr-3.0.0-b/version.c 2010-10-21 20:59:32.000000000 +0000
@@ -25,5 +25,5 @@
const char *
mpfr_get_version (void)
{
- return "3.0.0-p5";
+ return "3.0.0-p6";
}
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