mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-22 22:22:23 +00:00
188 lines
6.4 KiB
Diff
188 lines
6.4 KiB
Diff
---
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PATCHES | 1
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VERSION | 2 -
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mpfr.h | 2 -
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sin_cos.c | 34 +++++++++++++++++----------------
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tests/tsin_cos.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++--------
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version.c | 2 -
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6 files changed, 70 insertions(+), 27 deletions(-)
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--- /dev/null
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+++ b/PATCHES
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@@ -0,0 +1 @@
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+sin_cos_underflow
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--- a/VERSION
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+++ b/VERSION
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@@ -1 +1 @@
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-2.4.2
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+2.4.2-p1
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--- a/mpfr.h
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+++ b/mpfr.h
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@@ -27,7 +27,7 @@
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#define MPFR_VERSION_MAJOR 2
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#define MPFR_VERSION_MINOR 4
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#define MPFR_VERSION_PATCHLEVEL 2
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-#define MPFR_VERSION_STRING "2.4.2"
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+#define MPFR_VERSION_STRING "2.4.2-p1"
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/* Macros dealing with MPFR VERSION */
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#define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
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--- a/sin_cos.c
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+++ b/sin_cos.c
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@@ -82,17 +82,19 @@
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if (y != x)
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/* y and x differ, thus we can safely try to compute y first */
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{
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- MPFR_FAST_COMPUTE_IF_SMALL_INPUT (y, x, -2 * expx, 2, 0, rnd_mode,
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- { inexy = _inexact;
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- goto small_input; });
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+ MPFR_FAST_COMPUTE_IF_SMALL_INPUT (
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+ y, x, -2 * expx, 2, 0, rnd_mode,
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+ { inexy = _inexact;
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+ goto small_input; });
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if (0)
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{
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small_input:
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/* we can go here only if we can round sin(x) */
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- MPFR_FAST_COMPUTE_IF_SMALL_INPUT (z, __gmpfr_one, -2 * expx,
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- 1, 0, rnd_mode,
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- { inexz = _inexact;
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- goto end; });
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+ MPFR_FAST_COMPUTE_IF_SMALL_INPUT (
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+ z, __gmpfr_one, -2 * expx, 1, 0, rnd_mode,
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+ { inexz = _inexact;
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+ MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags);
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+ goto end; });
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}
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/* if we go here, one of the two MPFR_FAST_COMPUTE_IF_SMALL_INPUT
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@@ -101,18 +103,19 @@
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else /* y and x are the same variable: try to compute z first, which
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necessarily differs */
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{
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- MPFR_FAST_COMPUTE_IF_SMALL_INPUT (z, __gmpfr_one, -2 * expx,
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- 1, 0, rnd_mode,
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- { inexz = _inexact;
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- goto small_input2; });
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+ MPFR_FAST_COMPUTE_IF_SMALL_INPUT (
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+ z, __gmpfr_one, -2 * expx, 1, 0, rnd_mode,
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+ { inexz = _inexact;
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+ goto small_input2; });
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if (0)
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{
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small_input2:
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/* we can go here only if we can round cos(x) */
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- MPFR_FAST_COMPUTE_IF_SMALL_INPUT (y, x, -2 * expx, 2, 0,
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- rnd_mode,
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- { inexy = _inexact;
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- goto end; });
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+ MPFR_FAST_COMPUTE_IF_SMALL_INPUT (
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+ y, x, -2 * expx, 2, 0, rnd_mode,
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+ { inexy = _inexact;
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+ MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags);
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+ goto end; });
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}
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}
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m += 2 * (-expx);
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@@ -207,7 +210,6 @@
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mpfr_clear (xr);
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end:
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- /* FIXME: update the underflow flag if need be. */
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MPFR_SAVE_EXPO_FREE (expo);
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mpfr_check_range (y, inexy, rnd_mode);
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mpfr_check_range (z, inexz, rnd_mode);
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--- a/tests/tsin_cos.c
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+++ b/tests/tsin_cos.c
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@@ -382,23 +382,56 @@
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consistency (void)
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{
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mpfr_t x, s1, s2, c1, c2;
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+ mp_exp_t emin, emax;
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mp_rnd_t rnd;
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+ unsigned int flags_sin, flags_cos, flags, flags_before, flags_ref;
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+ int inex_sin, inex_cos, inex, inex_ref;
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int i;
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+ emin = mpfr_get_emin ();
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+ emax = mpfr_get_emax ();
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+
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for (i = 0; i <= 10000; i++)
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{
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mpfr_init2 (x, MPFR_PREC_MIN + (randlimb () % 8));
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mpfr_inits2 (MPFR_PREC_MIN + (randlimb () % 8), s1, s2, c1, c2,
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(mpfr_ptr) 0);
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- tests_default_random (x, 256, -5, 50);
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- rnd = RND_RAND ();
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- mpfr_sin (s1, x, rnd);
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- mpfr_cos (c1, x, rnd);
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- mpfr_sin_cos (s2, c2, x, rnd);
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- if (!(mpfr_equal_p (s1, s2) && mpfr_equal_p (c1, c2)))
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+ if (i < 8 * GMP_RND_MAX)
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+ {
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+ int j = i / GMP_RND_MAX;
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+ if (j & 1)
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+ mpfr_set_emin (MPFR_EMIN_MIN);
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+ mpfr_set_si (x, (j & 2) ? 1 : -1, GMP_RNDN);
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+ mpfr_set_exp (x, mpfr_get_emin ());
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+ rnd = (mpfr_rnd_t) (i % GMP_RND_MAX);
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+ flags_before = 0;
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+ if (j & 4)
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+ mpfr_set_emax (-17);
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+ }
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+ else
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+ {
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+ tests_default_random (x, 256, -5, 50);
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+ rnd = RND_RAND ();
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+ flags_before = (randlimb () & 1) ?
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+ (unsigned int) (MPFR_FLAGS_ALL ^ MPFR_FLAGS_ERANGE) :
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+ (unsigned int) 0;
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+ }
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+ __gmpfr_flags = flags_before;
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+ inex_sin = mpfr_sin (s1, x, rnd);
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+ flags_sin = __gmpfr_flags;
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+ __gmpfr_flags = flags_before;
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+ inex_cos = mpfr_cos (c1, x, rnd);
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+ flags_cos = __gmpfr_flags;
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+ __gmpfr_flags = flags_before;
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+ inex = !!mpfr_sin_cos (s2, c2, x, rnd);
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+ flags = __gmpfr_flags;
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+ inex_ref = inex_sin || inex_cos;
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+ flags_ref = flags_sin | flags_cos;
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+ if (!(mpfr_equal_p (s1, s2) && mpfr_equal_p (c1, c2)) ||
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+ inex != inex_ref || flags != flags_ref)
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{
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- printf ("mpfr_sin_cos and mpfr_sin/mpfr_cos disagree on %s,\nx = ",
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- mpfr_print_rnd_mode (rnd));
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+ printf ("mpfr_sin_cos and mpfr_sin/mpfr_cos disagree on %s,"
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+ " i = %d\nx = ", mpfr_print_rnd_mode (rnd), i);
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mpfr_dump (x);
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printf ("s1 = ");
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mpfr_dump (s1);
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@@ -408,9 +441,16 @@
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mpfr_dump (c1);
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printf ("c2 = ");
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mpfr_dump (c2);
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+ printf ("inex_sin = %d, inex_cos = %d, inex = %d (expected %d)\n",
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+ inex_sin, inex_cos, inex, inex_ref);
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+ printf ("flags_sin = 0x%x, flags_cos = 0x%x, "
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+ "flags = 0x%x (expected 0x%x)\n",
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+ flags_sin, flags_cos, flags, flags_ref);
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exit (1);
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}
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mpfr_clears (x, s1, s2, c1, c2, (mpfr_ptr) 0);
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+ mpfr_set_emin (emin);
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+ mpfr_set_emax (emax);
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}
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}
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--- a/version.c
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+++ b/version.c
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@@ -25,5 +25,5 @@
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const char *
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mpfr_get_version (void)
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{
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- return "2.4.2";
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+ return "2.4.2-p1";
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}
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