[newlib-cygwin/main] Cygwin: fix return value of ilogbl(NaN)
Corinna Vinschen
corinna@sourceware.org
Tue Apr 18 11:54:39 GMT 2023
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2fbb06d3cbc035e30e83c358267fbbf7f17c5999
commit 2fbb06d3cbc035e30e83c358267fbbf7f17c5999
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 13:43:06 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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