From: Siddhesh Poyarekar <siddhesh@sourceware.org>
To: libc-alpha@sourceware.org
Cc: joseph@codesourcery.com, carlos@redhat.com, fweimer@redhat.com
Subject: [PATCH 1/5] x86 long double: Support pseudo numbers in fpclassifyl
Date: Tue, 15 Dec 2020 19:43:35 +0530 [thread overview]
Message-ID: <20201215141339.2684384-2-siddhesh@sourceware.org> (raw)
In-Reply-To: <20201215141339.2684384-1-siddhesh@sourceware.org>
---
sysdeps/i386/fpu/s_fpclassifyl.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sysdeps/i386/fpu/s_fpclassifyl.c b/sysdeps/i386/fpu/s_fpclassifyl.c
index 501312f51e..aeaec7279c 100644
--- a/sysdeps/i386/fpu/s_fpclassifyl.c
+++ b/sysdeps/i386/fpu/s_fpclassifyl.c
@@ -34,6 +34,10 @@ __fpclassifyl (long double x)
retval = FP_ZERO;
else if (ex == 0 && (hx & 0x80000000) == 0)
retval = FP_SUBNORMAL;
+ /* Pseudo-normals, i.e. pseudo-zero, pseudo-infinity and unnormals. They
+ behave like NaNs, so categorize them as such. */
+ else if ((hx & 0x80000000) == 0)
+ retval = FP_NAN;
else if (ex == 0x7fff)
retval = ((hx & 0x7fffffff) | lx) != 0 ? FP_NAN : FP_INFINITE;
--
2.29.2
next prev parent reply other threads:[~2020-12-15 14:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 14:13 [PATCH 0/5] x86 pseudo-normal numbers Siddhesh Poyarekar
2020-12-15 14:13 ` Siddhesh Poyarekar [this message]
2020-12-22 18:43 ` [PATCH 1/5] x86 long double: Support pseudo numbers in fpclassifyl Adhemerval Zanella
2020-12-23 1:43 ` Siddhesh Poyarekar
2020-12-15 14:13 ` [PATCH 2/5] x86 long double: Support pseudo numbers in isnanl Siddhesh Poyarekar
2020-12-22 19:04 ` Adhemerval Zanella
2020-12-23 1:49 ` Siddhesh Poyarekar
2020-12-23 8:34 ` Siddhesh Poyarekar
2020-12-15 14:13 ` [PATCH 3/5] Partially revert 681900d29683722b1cb0a8e565a0585846ec5a61 Siddhesh Poyarekar
2020-12-15 14:36 ` Florian Weimer
2020-12-15 15:01 ` Siddhesh Poyarekar
2020-12-15 14:13 ` [PATCH 4/5] x86 long double: Consider pseudo numbers as signaling Siddhesh Poyarekar
2020-12-22 20:13 ` Adhemerval Zanella
2020-12-23 1:50 ` Siddhesh Poyarekar
2020-12-15 14:13 ` [PATCH 5/5] x86 long double: Add tests for pseudo normal numbers Siddhesh Poyarekar
2020-12-22 21:48 ` Adhemerval Zanella
2020-12-23 1:58 ` Siddhesh Poyarekar
2020-12-23 10:20 ` Siddhesh Poyarekar
2020-12-23 17:44 ` Adhemerval Zanella
2020-12-24 0:48 ` Siddhesh Poyarekar
2020-12-15 18:26 ` [PATCH 0/5] x86 pseudo-normal numbers Joseph Myers
2020-12-15 18:29 ` Siddhesh Poyarekar
2020-12-18 4:03 ` [PING][PATCH " Siddhesh Poyarekar
2020-12-22 7:46 ` [PING*2][PATCH " Siddhesh Poyarekar
2020-12-22 11:11 ` Adhemerval Zanella
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201215141339.2684384-2-siddhesh@sourceware.org \
--to=siddhesh@sourceware.org \
--cc=carlos@redhat.com \
--cc=fweimer@redhat.com \
--cc=joseph@codesourcery.com \
--cc=libc-alpha@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).