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From: Corinna Vinschen <corinna@sourceware.org> To: cygwin-cvs@sourceware.org Subject: [newlib-cygwin/cygwin-3_4-branch] Cygwin: fix return value of ilogbl(NaN) Date: Tue, 18 Apr 2023 11:54:29 +0000 (GMT) [thread overview] Message-ID: <20230418115429.6C2BD3858D1E@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=f87469dd5bcae461bd9fe4da4ee4958ecf353749 commit f87469dd5bcae461bd9fe4da4ee4958ecf353749 Author: Corinna Vinschen <corinna@vinschen.de> AuthorDate: Tue Apr 18 13:43:06 2023 +0200 Commit: Corinna Vinschen <corinna@vinschen.de> CommitDate: Tue Apr 18 13:43:31 2023 +0200 Cygwin: fix return value of ilogbl(NaN) Fixes: 792e51b72149 ("Add missing long double functions to Cygwin") Reported-by: Bruno Haible <bruno@clisp.org> Signed-off-by: Corinna Vinschen <corinna@vinschen.de> Diff: --- winsup/cygwin/math/ilogbl.S | 4 ++++ winsup/cygwin/release/3.4.7 | 3 +++ 2 files changed, 7 insertions(+) diff --git a/winsup/cygwin/math/ilogbl.S b/winsup/cygwin/math/ilogbl.S index a4fe503adcaf..c75a7d0fde9d 100644 --- a/winsup/cygwin/math/ilogbl.S +++ b/winsup/cygwin/math/ilogbl.S @@ -23,6 +23,8 @@ __MINGW_USYMBOL(ilogbl): andb %ah, %dh cmpb $0x05, %dh je 1f /* Is +-Inf, jump. */ + cmpb $0x01, %dh + je 1f /* Is +-Inf, jump. */ cmpb $0x40, %dh je 2f /* Is +-Inf, jump. */ @@ -53,6 +55,8 @@ __MINGW_USYMBOL(ilogbl): andb %ah, %dh cmpb $0x05, %dh je 1f /* Is +-Inf, jump. */ + cmpb $0x01, %dh + je 1f /* Is +-Inf, jump. */ cmpb $0x40, %dh je 2f /* Is +-Inf, jump. */ diff --git a/winsup/cygwin/release/3.4.7 b/winsup/cygwin/release/3.4.7 index 1186e57f5977..8ecfbc30a24b 100644 --- a/winsup/cygwin/release/3.4.7 +++ b/winsup/cygwin/release/3.4.7 @@ -15,3 +15,6 @@ Bug Fixes - Fix bug in cygheap allocation size computation after fork. Addresses: https://cygwin.com/pipermail/cygwin-developers/2023-April/012620.html + +- Fix return value of ilogbl(NaN). + Addresses: https://cygwin.com/pipermail/cygwin/2023-April/253511.html
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