From: Bruno Haible <bruno@clisp.org>
Date: Tue, 20 Jan 2026 06:11:31 +0000 (+0100)
Subject: vasnprintf: Optimize when 'long double' is the same as 'double'.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2400807a04adc7352e2bc9fdb7718e01dc2116a;p=thirdparty%2Fgnulib.git

vasnprintf: Optimize when 'long double' is the same as 'double'.

* lib/vasnprintf.c (DECL_LONG_DOUBLE_ROUNDING,
BEGIN_LONG_DOUBLE_ROUNDING, END_LONG_DOUBLE_ROUNDING): Override when
HAVE_SAME_LONG_DOUBLE_AS_DOUBLE.
---

diff --git a/ChangeLog b/ChangeLog
index eac539ae34..7b4a86c977 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2026-01-20  Bruno Haible  <bruno@clisp.org>
+
+	vasnprintf: Optimize when 'long double' is the same as 'double'.
+	* lib/vasnprintf.c (DECL_LONG_DOUBLE_ROUNDING,
+	BEGIN_LONG_DOUBLE_ROUNDING, END_LONG_DOUBLE_ROUNDING): Override when
+	HAVE_SAME_LONG_DOUBLE_AS_DOUBLE.
+
 2026-01-19  Collin Funk  <collin.funk1@gmail.com>
 
 	doc: mention an OpenBSD printf bug.
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index 85e30b9049..12bdd45ba1 100644
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -134,6 +134,16 @@
 # include "fpucw.h"
 #endif
 
+#if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+/* Override macros from fpucw.h.  */
+# undef DECL_LONG_DOUBLE_ROUNDING
+# define DECL_LONG_DOUBLE_ROUNDING
+# undef BEGIN_LONG_DOUBLE_ROUNDING
+# define BEGIN_LONG_DOUBLE_ROUNDING()
+# undef END_LONG_DOUBLE_ROUNDING
+# define END_LONG_DOUBLE_ROUNDING()
+#endif
+
 /* Default parameters.  */
 #ifndef VASNPRINTF
 # if WIDE_CHAR_VERSION