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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2014-02-27 21:29:16 +0530 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2014-06-14 18:44:28 -0400 |
| commit | 4545280f9c1ab06efa9348ab46bac436f5885244 (patch) | |
| tree | c28c89e391c7a0337e5c3ddbcd591d83d09923cc | |
| parent | e1449bcd91f738ea4b0b6d75bb3e1f21827cf047 (diff) | |
| download | glibc-4545280f9c1ab06efa9348ab46bac436f5885244.tar glibc-4545280f9c1ab06efa9348ab46bac436f5885244.tar.gz glibc-4545280f9c1ab06efa9348ab46bac436f5885244.tar.bz2 glibc-4545280f9c1ab06efa9348ab46bac436f5885244.zip | |
Fix sign of input to bsloww1 (BZ #16623)
In 84ba214c, I removed some redundant sign computations and in the
process, I incorrectly got rid of a temporary variable, thus passing
the absolute value of the input to bsloww1. This caused #16623.
This fix undoes the incorrect change.
(cherry picked from commit ffe768a90912f9bce43b70a82576b3dc99e3121c)
https://bugs.gentoo.org/509494
https://sourceware.org/bugzilla/show_bug.cgi?id=16623
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_sin.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_sin.c b/sysdeps/ieee754/dbl-64/s_sin.c index 6105e9fbdf..50109b8dd4 100644 --- a/sysdeps/ieee754/dbl-64/s_sin.c +++ b/sysdeps/ieee754/dbl-64/s_sin.c @@ -447,19 +447,21 @@ __sin (double x) } else { + double t; if (a > 0) { m = 1; + t = a; db = da; } else { m = 0; - a = -a; + t = -a; db = -da; } - u.x = big + a; - y = a - (u.x - big); + u.x = big + t; + y = t - (u.x - big); res = do_sin (u, y, db, &cor); cor = (cor > 0) ? 1.035 * cor + eps : 1.035 * cor - eps; retval = ((res == res + cor) ? ((m) ? res : -res) @@ -671,19 +673,21 @@ __cos (double x) } else { + double t; if (a > 0) { m = 1; + t = a; db = da; } else { m = 0; - a = -a; + t = -a; db = -da; } - u.x = big + a; - y = a - (u.x - big); + u.x = big + t; + y = t - (u.x - big); res = do_sin (u, y, db, &cor); cor = (cor > 0) ? 1.035 * cor + eps : 1.035 * cor - eps; retval = ((res == res + cor) ? ((m) ? res : -res) |