From: Bruno Haible <bruno@clisp.org>
Date: Wed, 10 Sep 2025 21:01:20 +0000 (+0200)
Subject: log10l: Remove support for IRIX.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3661cbe3a119583b514cc6d97cdb5d45be2861ab;p=thirdparty%2Fgnulib.git

log10l: Remove support for IRIX.

* m4/log10l.m4 (gl_FUNC_LOG10L_WORKS): Remove IRIX <float.h> workaround.
* lib/log10l.c (log10l): Remove code for IRIX.
---

diff --git a/ChangeLog b/ChangeLog
index 40c33997cf..71a860ea8a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2025-09-10  Bruno Haible  <bruno@clisp.org>
 
+	log10l: Remove support for IRIX.
+	* m4/log10l.m4 (gl_FUNC_LOG10L_WORKS): Remove IRIX <float.h> workaround.
+	* lib/log10l.c (log10l): Remove code for IRIX.
+
 	logl: Remove support for IRIX.
 	* m4/logl.m4 (gl_FUNC_LOGL_WORKS): Remove IRIX <float.h> workaround.
 
diff --git a/lib/log10l.c b/lib/log10l.c
index a607db8920..139aac0df8 100644
--- a/lib/log10l.c
+++ b/lib/log10l.c
@@ -35,19 +35,11 @@ long double
 log10l (long double x)
 # undef log10l
 {
-  /* Work around the AIX, IRIX bug.  */
+  /* Work around the AIX bug.  */
   if (x == 0.0L)
     /* Return -Infinity.  */
     return -1.0L / 0.0L;
-  {
-    long double y = log10l (x);
-# ifdef __sgi
-    /* Normalize the +Infinity value.  */
-    if (y > LDBL_MAX)
-      y = 1.0L / 0.0L;
-# endif
-    return y;
-  }
+  return log10l (x);
 }
 
 #else
diff --git a/m4/log10l.m4 b/m4/log10l.m4
index 8242d984e5..21e0038707 100644
--- a/m4/log10l.m4
+++ b/m4/log10l.m4
@@ -1,5 +1,5 @@
 # log10l.m4
-# serial 16
+# serial 17
 dnl Copyright (C) 2011-2025 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -56,9 +56,6 @@ AC_DEFUN([gl_FUNC_LOG10L],
 ])
 
 dnl Test whether log10l() works.
-dnl On IRIX 6.5, log10l(-0.0L) is an unnormalized negative infinity
-dnl 0xFFF00000000000007FF0000000000000, should be
-dnl 0xFFF00000000000000000000000000000.
 dnl On AIX 5.1, log10l(-0.0L) is finite if it's not the first log10l call
 dnl in the program.
 dnl On NetBSD 9.3, the result is accurate to only 16 digits.
@@ -96,14 +93,6 @@ AC_DEFUN([gl_FUNC_LOG10L_WORKS],
 # undef LDBL_MIN_EXP
 # define LDBL_MIN_EXP DBL_MIN_EXP
 #endif
-#if defined __sgi && (LDBL_MANT_DIG >= 106)
-# undef LDBL_MANT_DIG
-# define LDBL_MANT_DIG 106
-# if defined __GNUC__
-#  undef LDBL_MIN_EXP
-#  define LDBL_MIN_EXP DBL_MIN_EXP
-# endif
-#endif
 #undef log10l /* for AIX */
 extern
 #ifdef __cplusplus
@@ -126,7 +115,7 @@ int main (int argc, char *argv[])
   /* Dummy call, to trigger the AIX 5.1 bug.  */
   gx = 0.6L;
   gy = log10l (gx);
-  /* This test fails on AIX 5.1, IRIX 6.5.  */
+  /* This test fails on AIX 5.1.  */
   {
     gx = -0.0L;
     gy = log10l (gx);