copysign: Does not require -lm on glibc systems.

diff --git a/ChangeLog b/ChangeLog
index e2c0d06..574a1a3 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2010-07-31  Bruno Haible  <bruno@clisp.org>
 
+       copysign: Does not require -lm on glibc systems.
+       * modules/copysign (configure.ac): Use gl_MATHFUNC, not
+       gl_COMMON_DOUBLE_MATHFUNC.
+       * m4/mathfunc.m4 (gl_COMMON_DOUBLE_MATHFUNC): Update comments.
+
+2010-07-31  Bruno Haible  <bruno@clisp.org>
+
        duplocale: Work around AIX 7.1 bug.
        * m4/duplocale.m4 (gl_FUNC_DUPLOCALE): Let the test fail also when
        duplocale(LC_GLOBAL_LOCALE) returns (locale_t)0.

diff --git a/m4/mathfunc.m4 b/m4/mathfunc.m4
index f6e091b..92faac9 100644 (file)
--- a/m4/mathfunc.m4
+++ b/m4/mathfunc.m4
@@ -1,4 +1,4 @@
-# mathfunc.m4 serial 4
+# mathfunc.m4 serial 5
 dnl Copyright (C) 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -65,8 +65,8 @@ AC_DEFUN([gl_MATHFUNC],
 # It sets FUNC_LIBM to empty or "-lm" accordingly.
 # FUNC must be one of the following functions, that are present on all systems
 # and provided by libm on all systems except MacOS X, BeOS, Haiku:
-#   acos asin atan atan2 cbrt copysign cos cosh erf erfc exp fmod hypot j0 j1
-#   jn lgamma log log10 log1p pow remainder sin sinh sqrt tan tanh y0 y1 yn
+#   acos asin atan atan2 cbrt cos cosh erf erfc exp fmod hypot j0 j1 jn lgamma
+#   log log10 log1p pow remainder sin sinh sqrt tan tanh y0 y1 yn
 
 AC_DEFUN([gl_COMMON_DOUBLE_MATHFUNC],
 [
@@ -86,7 +86,6 @@ AC_DEFUN([gl_COMMON_DOUBLE_MATHFUNC_TEST],
   dnl gl_MATHFUNC([atan], [double], [(double)])
   dnl gl_MATHFUNC([atan2], [double], [(double, double)])
   dnl gl_MATHFUNC([cbrt], [double], [(double)])
-  dnl gl_MATHFUNC([copysign], [double], [(double, double)])
   dnl gl_MATHFUNC([cos], [double], [(double)])
   dnl gl_MATHFUNC([cosh], [double], [(double)])
   dnl gl_MATHFUNC([erf], [double], [(double)])

diff --git a/modules/copysign b/modules/copysign
index c632806..5318e80 100644 (file)
--- a/modules/copysign
+++ b/modules/copysign
@@ -7,7 +7,7 @@ m4/mathfunc.m4
 Depends-on:
 
 configure.ac:
-gl_COMMON_DOUBLE_MATHFUNC([copysign])
+gl_MATHFUNC([copysign], [double], [(double, double)])
 
 Makefile.am: